2021 FACTORY STOCK RULES
All drivers are required to have a working Receiver.
APPEARANCE 1. All racecars must be numbered with large legible numbers on both sides, on top and on the nose and real panels. Numbers on the sides of the racecar should be in contrasting color from the body and be at least four (4) inches thick and at least eighteen (18) inches high. Top numbers should be at least four (4) inches thick and twenty-four (24) inches high.
BODY -1. Any American made stock passenger car body on a stock unaltered full frame, or Chrysler & Ford unibodies. No Camaro, Mustangs, or Station Wagons. 2. Stock appearing aftermarket plastic nose piece can be drilled for air but not extended with any type of material. 3. Tail pieces with no holes are allowed. Rear of car must be sealed off, no exposed fuel cell. 4. No spoilers (even if factory equipped), wings, skirts, valiances, air scoops, hood scoops, or anything that alters stock appearance. 5. Bodies cannot be moved from the original body mount rubber bushing no more than +/- 1” cannot be less than 5 ½” from ground. 6. A front visor is allowed on the windshield area MAX 7 inches. 7. No side or rear window visors allowed. Sunroofs and T-tops must be reinforced and enclosed. No nerf bars. 8. Maximum one inch wide by two-inch-tall steel or lexan rub rails allowed - bolted flush to body. 9. All glass, plastic, upholstery, lights, mirrors, and trim must be removed. 10. Cars must be stock appearing. No cutting, channeling, shortening, or modifying of body is allowed. No excessive trimming of fenders or hoods allowed. No drilled holes allowed in hoods for air supply, must maintain stock OEM appearance. If hood does not match (P on Body Specifications Diagram) fenders must be remove-able with 7/16” bolts. All doors, fenders, and window openings must remain stock appearing and OEM dimensions and be the same on both sides. 11. No straight slab sides. No enclosed interiors, or decking allowed. Front edge of rear deck cannot be more than 8” forward of center of rear-end and must have at least 2” continuous drop from front to rear. Rear of dash can be no more than 35” from the center of the distributor or 28” from back edge of the center of stock hood. Original OEM front and rear firewalls must remain in stock location. 12. Rear of dash can be no more than thirty-five (35) inches from the center of the distributor or twenty-eight (28) inches from back edge of the center of stock hood. Original OEM front and rear firewalls must remain in stock location. The front firewall must match the frame used and the OEM mount must be visible. Firewall must be full and complete. 13. Front OEM firewall may be replaced using steel fabricated firewall,18- gauge or (.049)inch thickness. Front firewall may be no further back than the rear edge of oval frame hole, must be vertical and at or between (24) and (26) inches tall. Drivers compartment must be completely sealed off from engine compartment. 14. GM “G” body cars may utilize an OEM fiberglass replacement roof. All openings should be covered as to isolate the driver (subject to track approval).
FLOOR PAN 1. OEM floor pan may be cut 6” behind front OEM mounts in a straight line across to the other side and be replaced using steel fabricated floor pans made of 18 gauge metal or minimum of .049” thick steel securely welded to the frame. 2. Must remain flat, OEM appearing from frame rail to frame rail, no higher or lower than frame rail with the exception of a maximum tall 8” drive shaft tunnel and similar to OEM tunnel in size. Interior must be completely sealed off from engine, ground, and trunk. 3. If you choose to fabricate the floor pan to the above specs, there will be a 10lb weight penalty accessed in front of the motor.
FRAME 1. Frame must be full and complete. Cannot be Widened, Narrowed, Shortened, Lengthened, or be Cut, Bent, or Altered to change Suspension Brackets. 2. Rear of frame behind upper shock mounts may be replaced with round, square, or rectangular tubing. 3. Cannot narrow right rear frame for tire clearance. 4. No frame alterations allowed. 5. All Bars forward of cage must be lower than the hood. May not be cut for tie rod clearance or oil pan clearance.
BUMPERS 1. Stock type rear bumper required, a fabricated front bumper may be used with the following conditions: cars with aftermarket nose pieces- the bumper may extend past frame rails for support and reinforcement. Must be behind nosepieces. Cars without nosepieces- the bumper may not extend past front frame horns. NO SHARP EDGES. 2. Must have a minimum of 5/16th diameter chain welded or cable attached to front and rear of car with the design so tow truck can attach to them, this will be a DQable item. Rear bumper must be covered by the tailpiece if the car has a tailpiece.
ROLL CAGE 1. Minimum four-point cage, minimum size 1 ½ “O. D. by .095” wall thickness. 2. Minimum three bars in driver’s side door, and two bars on passenger side door (three bars recommended). 3. Four-point quick release seat belt and harness required for driver. 4. Racing seat required. 5. Must have window nets and firesuit for driver. 6. Must have at least three bars in front of driver in windshield area. 7. Window nets recommended for the driver.
ENGINE: Any OEM factory production small block cast iron American made V8 engine with a maximum of 364 CID. Stock replacement 2 or 4 valve relief pistons, no light weight pistons or wrist pins. OEM or aftermarket stock appearing 5.7 connecting rods only, aftermarket rod bolts allowed, Cap screws allowed. OEM or aftermarket stock replacement standard weight crankshafts allowed, minimum weight 48lbs., no bull nosing, lightning or knife edging allowed. Maximum stroke of 3.48 inches. Engine Balancing OK. No splayed main caps. Engine bolts may be aftermarket. Aftermarket Harmonic Balancer OK. Maximum compression of 175 PSI. Aftermarket oil pans ok, recommend a 1” inspection plug. The plug should be located on the left hand side approximately 2” down from the pan rail and in line with a connecting rod assembly that is convenient to look at when the pan is installed in the car. Any type of windage trays are not allowed. OEM type timing chain system only, double roller allowed, gear drives or belt drives not allowed. Aluminum pulleys and serpentine belt system allowed. Aftermarket water pump, Aftermarket power steering pump with integrated tank OK Motor must be in OEM location; solid motor mounts allowed but must be in OEM location, No tolerance. Cylinder Heads - OEM production unaltered cast iron cylinder head. OEM casting number must remain on heads. E Force Part #10024360 allowed. No grinding of any kind allowed on heads, no gasket matching, no porting or polishing allowed. Vortec or double hump OEM heads not allowed, 305 heads allowed on 305 CID engines only, 305 heads not allowed on 350 CID engines. Maximum 1.94 intake valves and 1.50 exhaust valves, Exception: 1.630 exhaust valves allowed on Chrysler Engines. Heads may be flat milled for surfacing reasons only, no angle milling. Valve spring OD diameter must not exceed 1.250 inch (+ or - .015 inch). Guide plates, 3/8 X 7/16 screw in studs and poly locks allowed, pinning of OEM studs allowed. Stud mounted 1.5 stamped steel rockers on GM & Chrysler, 1.6 on Ford, full roller or roller tipped rockers are not allowed. After-market valve cover with breather tubes allowed, oil diverters allowed. Camshaft and Lifters Hydraulic camshaft and conventional hydraulic flat tappet lifters only, no hydraulic OEM roller lifters. Maximum valve lift of .450 inch measured at steel retainer. Solid lifter will be used at tech to confirm. Maximum push rod length of 7.800 inch. OEM firing order cannot be changed thru cam design. GM firing order 1-8-43-6-5-7-2. Engine must have a minimum of 14 inches of vacuum at 1200 RPM, No tolerance No vacuum canisters allowed, brake booster will be disconnected and capped during time of vacuum inspection. Intake Stock unaltered cast iron or aluminum OEM intake manifolds only. No aftermarket, bowtie, marine, or high-rise intakes. No internal modifications of any intake permitted, No deburring, acid porting, gasket matching or grinding allowed. Must have a ¼ inch accessible vacuum port on intake for Tech.
602 CRATE ENGINE OPTION: Unaltered sealed GM Part Number 88958602 or 19258602 GM Crate engine is allowed. • Must remain factory sealed – any different, altered or missing GM seals bolts will result in DQ. • May have IMCA seal cables but must register and present track with all register paperwork. • With 500 CFM 2 Barrel (reference carburetor rules), No 4 barrels. Is subject for tear down and internal inspections. Crates must run 6200 RPM chip CARBURATION AND FUEL SYSTEM 1. Cast Holley 4412 -2 barrel only. 2. Holley 4412 – Part #L6R3250B are illegal. Holley 4412 – Part #L6R199B is legal. 3. Must be unaltered. NO screw in air bleeds, NO powder coating, or any modifications. 4. Choke plate may be removed. 4412 must be cast into choke horn of carb. 5. Maximum spacer and adapter 1” combined total with gasket. 6. Fuel pump must be in stock location for make, NO electric pumps or fuel injection even if factory equipped. 7. NO fuel pressure regulators, NO fuel bypass systems, or any cool can devices.
EXHAUST 1. Stock unaltered cast iron exhaust manifolds only no porting or grinding allowed. 2. No welding exhaust pipe to manifolds or modifying OEM exhaust flanges. 3. No Chevy center dump, Corvette, marine, Lt1 or tubular steel type manifolds. 4. No adaptors between head and manifold, must be able to use all OEM exhaust bolt holes in head. 5. No two into one exhaust or x pipes must remain duals.
INTAKE MANIFOLD 1. Stock OEM unaltered aluminum or cast-iron intake only. 2. No aftermarket or stock high performance or high rise. 3. No bowties. 4. No porting, polishing, cutting or gasket matching.
TRANSMISSIONS 1. Any stock type automatic or cast iron 3 speed OEM manual. No 4 or 5 speed transmissions. 2. Automatics must have stock appearing working 11” torque converter cannot be smaller with ring around it. 3. Scattersheild recommended for automatic transmissions. 4. Aftermarket bell housing on automatic transmission is Allowed 5. No direct drives. 6. All gears and planetary must remain OEM configuration. 7. Hardened input shaft OK. 8. Transmission Cooler OK. 9. Manual must have single disc 10.5” clutch, flywheel and pressure plate must be steel, steel bellhousing recommended, minimum 15lb steel flywheel. 10. No mini clutches. 11. Steel drive shafts only must be painted white and have a loop 6” from front u-joint. 12. Torque convertor must be steel.
FUEL 1. Gasoline or Racing Gas allowed. No Methanol. None of the following chemicals are allowed in any fuel used for competition: No nitrous oxide, propylene oxide, nitroethane, MTBE, hydrazine, or ethyl hexanol. a. Gasoline or Race Gas – specific gravity NOT to exceed .744 at 60 degrees. Any gasoline or race gas with a specific gravity of .745 or greater will be disqualified. Fuel is subject to testing on site, or fuel samples may be taken and sent to an independent lab for testing. b. It is the competitor’s responsibility to know what is being put into their fuel cell. 2. Fuel cell must be secured in trunk any part of fuel cell cannot be forward of any part of rear end. 3. Fuel cell must be visible for inspection purposes from the top through a removable stock appearing trunk lid. 4. Fuel cell vents, including cap vent, must have check valves. 5. Fuel cell must have aircraft style positive seal filler neck/cap system. A ball-type, flapper or spring or filler rollover valve is mandatory for fuel cells without a positive seal filler neck/cap system.
SUSPENSION 1. Front and rear suspension must be stock unaltered OEM for that make and model of frame, ball joints, spindles, and all components. 2. Lower control arm bushings OEM design only and cannot be steel, aluminum or grease able type. Lower A-Frame mount may not be notched for clearance. 3. No air shocks. No alterations to any part of the suspension or frame will be allowed. 4. May run IMCA type upper control arms 8” or 8 ½” length only. Sway bars must be stock for make and model mounted in OEM mounts. 4. At ride height no part of the frame can be touching Stock suspension stops. 5. Shocks must have stock type rubber ends, must be mounted in stock location on frame with no control arm and 6. rear-end. Cannot space shocks up or down. 7. 7. No bulb-type, threaded body, coil-over, or remote reservoir shocks. No external or internal bumpers or stops. No 8. Schrader valves on shocks. All shocks must collapse at any time. Shock body must be steel. 9.
SPRINGS 10. 1. Maximum length of rear springs 14” tall free height and both sides must be equal and in stock location. 5" minimum 11. diameter. 12. 2. No spring rubbers, no adjustable weight jacks of any kind, and must sit in unaltered top and bottom stock mounts. SPRINGS 1. Maximum length of rear springs 14” tall free height and both sides must be equal and in stock location. 5" minimum diameter. 2. No spring rubbers, no adjustable weight jacks of any kind, and must sit in unaltered top and bottom stock mounts.
BALL JOINTS 1. May run aftermarket ball joints but must be stock OEM dimensions. 2. Rebuildable ball joints ok.
REAR END 1. Stock rear-end for make and model no modifying axle bearings or length. 2. All brackets, control arms, and shock mounts must be in stock location. 3. All trailing arm bushings must be OEM or OEM replacement with OEM design, NO ALTERATIONS 4. Rear end may be braced for strength. 5. Upper and lower trailing arms may be braced for strength. 6. Gears may be locked must use stock unaltered ring gear carrier may weld or use bolt in locking blocks. 7. No full spools, Detroit lockers or torque sensing devices. 8. Optional spring cups will be allowed on rear-end housing must be welded flat on the center of the rear-end and be in line with the OEM spring mounts left to right. Both sides must match. 9. OEM spring mounts may be removed from the housing.
STEERING / DRIVER SEAT 1. Steering boxes must remain in stock location. 2. Aftermarket steering wheel and quick release steering coupling are recommended. 3. Quick steer boxes allowed. 4. All components must be steel, unaltered OEM, and OEM location and match frame. Exceptions are; tie rod end adjusting sleeve may be replaced with 5" steel tube, replacement spindle with SPEEDWAY MOTOR raised cast part number #91034501; bolt on OEM spindle savers allowed. 5. NO part of driver seat may be no further back than 25” forward of center line of drivers side axle tube. 6. No knobs, handles, or levers other than the gas pedal and brake pedal allowed for adjustment of carburetor, ignition timing, or brakes. RADIATORS 1. Any (1) radiator that fits in original location without any body modifications is allowed. 2. Water pump mounted fans only, No electric fans.
IGNITION 1. One 12 volt battery only must be mounted securely in rear of driver’s compartment or trunk area. 2. If battery is in driver’s compartment sealed box recommended. 3. No voltage generators in series with ignition system, voltage at distributor cannot be more than at battery (12) volts. 4. One stock type distributor, module and coil in stock location only. 5. Ignitions on/off switch must be clearly marked. 6. No traction control devices of any kind. No digital gauges or tachs.
BRAKES 1. May use any (1) one master cylinder. Aftermarket pedal OK. 2. Must have at least 3 working brakes. Right front may be blocked. 3. No bias adjustment, no electric or manual cut-off switches or valves allowed. 4. Disc brakes allowed in rear. 5. No aluminum or composite rotors or calipers. Must use steel stock type rotors on rear disc. 6. No lighting of components. 7. Optional (1) manual brake shut off valve allowed underneath hood to the right front only. 8. No electric shut off valves.
TIRES AND WHEELS 1. 8” maximum wide wheels allowed, 15” diameter steel wheels only. 2. No bead locks or screws allowed. Mud plugs and wheel covers allowed ONLY on the right side. 3. Wheel cover must be plastic, be bolted, no Dzus fasteners, the ring that holds the wheel cover must be welded to the wheel in at least three places. 4. NO bleed off valves. 5. Must run 1” steel lug nuts. 6. Wheel spacers/adapter can only be a maximum of 1" combined per wheel. Aluminum Wheel Spacers and Adapters only. 7. Approved unaltered Hoosier asphalt F45 pull offs only. Must durometer 60 or higher before race. Tires must durometer a minimum of (54) after race. A grace time of (10) minutes will be allowed for tire to cool. Subject to inspection any time before or after the race. 8. No grooving, siping, softening, needling, metal grinding disc, treating, softening, or wrapping in plastic allowed. 9. Deglazing with sandpaper disc ONLY allowed, but cannot leave any grinding marks and is subject to inspection before or after race.
TIRE TESTING 1. TRP - Texana Raceway Park reserves the right to test tires at any time while a competitor is signed into competition and on any tire on the car or in the competitor’s pit area. 2. It is strongly recommended that all drivers use only soap and water. Baking tires will not eliminate traces of illegal substances. TRP - Texana Raceway Park will aggressively test for illegal substances and will levy severe punishment for infractions relating to tires 3. TRP – Texana Raceway Park may utilize Random GC, Laboratory Testing, and any other proven technologies to detect tire alterations from the use or chemicals or other substances. 4. Random GC (gas chromatography) a. Random GC scans may be performed to identify illegal substances at any time while a competitor is signed into competition and on any tire on the car or in the competitor’s pit area. A GC scan should always be a peak in 19-20 minutes. If there is no peak, the driver will be disqualified. The main peak of the tire should never be in half. b. Driver may protest the GC scan results and request a Laboratory Test at the cost to the driver ($300 per tire). The laboratory testing will reveal exactly what substance was used. c. Failure to allow Random GC scans will be viewed by TRP - Texana Raceway Park as an admission of guilt, the competitor will be disqualified, winnings forfeited, and suspended from competition at TRP - Texana Raceway Park following the Tire Testing Penalties d. All random GC scan results that fail (that are not under Lab Testing protest) and subsequent suspensions (if necessary) will be announced on TRP - Texana Raceway Park website. 5. Lab Testing a. Lab Testing is not subject to a failed Random GC test, Lab Testing may be utilized at any time. b. TRP - Texana Raceway Park reserves the right to take three (3) tire samples for laboratory review at any time while a competitor is signed into competition and on any tire on the car or in the competitor’s pit area. 1st – Lab Sample, 2nd – Competitor Sample, 3rd – Track Sample. Tire Samples will be sent to Blue Ridge Labs for testing and results will be final. c. Competitor must take (as directed) and provide tire samples to track officials while being supervised by track officials. Competitor will provide their own tools to take tire samples. d. Track officials will provide tools to take sample only at the request of competitor. If track officials provide tools on behalf of competitor, said competitor agrees that in no way did track equipment contaminate tire samples. e. Any winnings will be held until lab results are returned. f. In the event of a tire sample failure, competitor can pay for a second round of testing on the additional tire samples taken. g. In the event a competitor is disqualified for failed tires, all winnings from the event will be forfeited and the competitor will be suspended from competition at TRP - Texana Raceway Park for One (1) calendar year from the event date. h. Failure to provide tire samples will be viewed by TRP - Texana Raceway Park as an admission of guilt, the competitor will be disqualified, winnings forfeited, and suspended from competition at TRP - Texana Raceway Park following the Tire Testing Penalties. i. All lab results (pass or fail) and subsequent suspensions (if necessary) will be announced on TRP - Texana Raceway Park ’s website. 6. TRP - Texana Raceway Park recommends that teams only use soap and water to clean your tires
TIRE TESTING PENALTY 1. Driver and Car Owner (if different) will both be held accountable for failed tests. 2. It is the responsibility of both the Driver and Owner to understand and know the tires are legal and have not been tampered with. In the event the car owner and driver are different, both parties will be penalized and required to pay the fine and complete the suspension before entering another car, competing, or being on the grounds at any TRP - Texana Raceway Park event. 3. First Offense - $500 fine and 30-day suspension from any TRP - Texana Raceway Park event. 4. Second Offense - $1,000 fine and 90-day suspension from any TRP - Texana Raceway Park event. 5. Third Offense - $2,000 fine and 365-day suspension from any TRP - Texana Raceway Park event. 6. Failure to allow any tire(s) to be confiscated will result in an additional $500 per tire fine added to any other fines and penalties. All decisions are final. WEIGHT 1. Weight may be securely added in trunk or under the hood, but not in plain view or within the driver’s compartment must be painted white with car number. 2. Car must weigh minimum 2950 lbs. with driver after race. 3. No weight mounted to rear end housing. 4. All weight 25 pounds and less must have at least 1 half inch diameter bolt securing it to frame. 5. Weight over 25 pounds must have 2 half inch diameter bolts securing it to frame. 6. No stacking of weight.
COURTESY RULE 1. Any car with “minor” rule infractions will be allowed to race (1) event. Must be determined before the race. Cars with infractions are subject to weight penalty.
CLAIM PROCEDURE RULES 1. The official claiming area is in the tech area, or wherever track designates. 2. Claim must be made immediately after the “A” feature race finishes (checkered flag). 3. Only the driver may make the claim. Driver must have money. 4. The claiming driver must be on the same lap as the driver being claimed. 5. Only the top three cars may be claimed by another driver. 6. A driver can claim another driver’s engine, carburetor, distributor, or shock. 7. Multiple claims on the same engine, carburetor, distributor, or shock: A draw will be held with claiming drivers to determine who gets claim. 8. Refusal to sell will forfeit all cash, trophies, and points for the night. If claim is refused, claim is NOT held against driver who made claim.
ENGINE CLAIMING RULES 1. Any driver in the same race on the lead lap may claim one of the top three finishers immediately after the “A” feature in the tech area with money in hand. a. $500 and swap claim on engines. b. Claim does not include - Flywheel, clutch/assembly, bell housing, breathers, carburetor, starter, motor mounts, oil/temp sending units, water pump, fan, pulleys, dip stick, distributor, wires, water outlet/restrictor, fuel pump, fuel pump plate/rod. c. Driver may NOT claim another driver finishing in a position behind them and may not successfully claim the same driver more than once per calendar year.
CARBURETOR / DISTRIBUTOR / SHOCK CLAIM RULES 1. Carburetor claim $200.00 and swap 2. Shock or Spring claim $20.00 each and swap 3. Distributor claim $100.00 and swap. BODY SPECIFICATIONS A. Only stock appearing plastic nose and tail pieces are allowed (no late model noses). B. Minimum 5.5” from the ground. C. Minimum 107.5” wheel base +/- ½” side to side. D. Max 7” visor, no side visor on body or cage. E. B pillars must be stock oem dimension. Side windows must be OEM or a min height of 16.5” +/- 1”. Rear side window cannot be closed off. No Wedge Roofs. F. Stock appearing aluminum body ok. Hood cannot have more than 5” of rake to the nose. Must look factory. G. Stock rear bumpers ok, must be tied to the body with 4” flat plate if it’s not inside the tail piece. Front bumpers not covered with a plastic nose cannot be wider than the stock frame horns even if it’s a stock front bumper. H. Rear of dash can be no more than 35” from the center of the distributor or 28” from the back of the stock hood. I. Rear deck may only be 8” in front of the center of the rear end. J. Must have a minimum of 3 windshield bars in front of the driver. K. Trunk and rear quarters must have a min2” rev rake. L. Any fabricated doors steel or aluminum door height must be a min of 27” and a max of 29”. M. Max 47” from center of spindle to front of nose. N. Max 50” from center of axle to rear of car. O. Max 73” width of body. P. Hood opening has to be at least 42” min centered between frame rails. Page Q. Trunk opening has to be at least 42” min centered between frame rails. **** P & Q**** must be complied with no later than August 10, 2019. R. GM “G” body cars may utilize an OEM fiberglass replacement roof. All openings should be covered as to isolate the driver (subject to track approval). PROTEST RULE 1. Any driver in the same race on the lead lap may protest another car immediately after feature in the tech area. 2. $250.00 cash per component $50.00 to the track. 3. If legal, protested car gets $200.00. 4. If illegal protestor gets $200.00 back. 5. Laboratory Testing of Tire protest will cost an additional $300 (to cover testing) on top of the regular $250 protest fee
2021 Street Stock Rules
- Car Body and Frame
Any stock, production American-made vehicle including Camaro, Firebird and Mustang. Pickups will be allowed
- Trunk pan may be removed for fuel cell clearance. Aftermarket body panels are okay. Full OEM panels are okay. Can run aluminum body panels (Must be Stock Appearing).
- Race ready minimum weight is 3100 lbs. with driver.
- 53 ½ % rear weight max after race. You will have one chance to remove mud.
- Minimum wheelbase is 108 inches with ½” tolerance.
- Frames or uni-body may be X-braced for safety and tied together straight.
- Body panels may be cut out.
- Original stock bumpers or IMCA style bumpers are required.
- Tube rear clips will be allowed if pre-approved AKA 2”x3” square tubing on unibody.
- Firewall and floor pan may be replaced with steel. Must have steel under driver and to the left of driver.
- Spoiler maximum height is 6” of material and cannot exceed past body. Side panels of spoiler no taller than 8’’ tall. Maximum of 3 braces allowed. One each side and one in center.
- Rear of car must be closed off. Must cover from top of trunk lid to top of bumper and must run fender to fender.
- Mandatory pick up chains front and rear for wrecker hook up.
- Chassis and Suspensions
- 4-point roll cage with 3 driver side bars and 2 passenger side bars required above frame. DOWN TUBES MANDATORY!
- Roll cage made of minimum 1 ½ inch tubing with minimum.095 wall thickness.
- Driver side door plate mandatory. ⅛ in. minimum steel.
- Front and rear weights jacks are allowed.
- If weight jacks are used front and rear shocks may be relocated.
- Lower control arms must remain in stock location. Can use Stock replacements and retain stock measurements.
- No aftermarket spindles. IMCA replacement stock only. GM to GM and Ford to Ford only.
- Upper a-frame tower may be drilled to allow lowering of A-frame control arm.
- Aftermarket springs are allowed but must remain in stock location and top dead center.
10.No Chrysler Springs of any kind allowed.
11.Sway bar (if used) must remain in stock location and be OEM replacement.
12.Adjustable spring shackles and sliders are allowed; leaf springs must be in stock location.
13.Steel racing shocks allowed, re-building steel shocks, no Schrader valves.
- All four (4) brakes must be stock and in working condition. NO aluminum calipers.
- Rear disc brakes allowed.
- Rub rails are okay. Panel rails allowed. Rub rails may not stick out further than outside edge of rear tire.
- Brake bias control/adjuster allowed.
- Quick steering is allowed.
- Tube rear clips will be allowed if pre-approved. AKA 2x3 square. tubing on unibody.
- Engine must remain in stock position. #1 spark plug may not be further back than the most forward ball joint.
- All major components must remain in stock for type and year of engine.
- Engine 360 cubic inch maximum.
- 602 Crate Motor allowed. Must use unaltered sealed GM 602 crate engine with GM logo cap seals or may have IMCA Cable-Lok seals. Upon inspection, any different, altered or missing GM seal bolts will result in automatic disqualification. Spec Carb 4150 Holley only with 650 cfm.
- Heads must be OEM cast iron, minimum of 62 cc. Aftermarket will be allowed with a minimum of 72 cc.
- Maximum intake valve 2.02 Maximum exhausts valve 1.60.
- No porting or polishing. No gasket matching.
- No aluminum heads.
- Flat top pistons with 2 or 4 valve relief.
- Unmodified stock OEM cast iron 4-barrel intake manifolds are allowed.
- Any aluminum 4-barrel intake manifolds are allowed. No sheet metal intakes allowed. 2-barrel intake manifolds will be allowed, carries a 25lb weight penalty, weight added anywhere on the car to the total weight of car. 4412 Holley Carb with no spacers.
12.Marine cast iron manifolds are allowed on GM engines.
- Porting, enlarging ports, port matching and floor or port polishing are not allowed. NO acid dipping.
- Holley 4412 Carburetor only. Must pass GO/No GO Gauge. No HP Carburetors allowed.
- Any solid or hydraulic cam.
- 550 Cam Rule.
- No roller cams are allowed.
- Stock lifter bore only.
- Any stud type rocker and rollers and stud girdles are allowed.
- Any stock appearing rod, rod length restricted to 6.00” maximum and I-beam or H-beam. No aluminum rods allowed.
- Crank shafts 48 lbs minimum. Stock 302 crank allowed.
- No exhaust flow devices allowed such as cross pipes or H-pipes. Headers are allowed straight style and step style. Exhaust must remain dual, two mufflers one per header. Mufflers are required.
- Stock or aluminum radiator allowed.
- No antifreeze allowed.
- Mandatory 1” inspection hole in oil pan.
4) Transmission and Rear End
- Stock automatic with stock torque converter or standard transmission allowed. No 5 or 6 speeds. No smaller than 10” torque converter.
- Bert, Brenn, Falcon transmission and Mini Clutches allowed, if with open motors, must add 50 lbs. in front of transmission (positioned no further forward than the back of the carburetor).
(602 Crate motor does not have to add additional weight)
- Minimum 10” steel clutch and flywheel for open motors.
- Rear end in stock position 9” Ford allowed. Floater allowed.
- Posi-trac or locked rear ends allowed.
- Painted drive shaft required (white) with car number in black.
- Drive shaft loops required.
- Standard transmission with Blowproof Bellhousing.
- 3 link with no traction control device and solid top link.
- 3 link must use stock lower control arms.
- Pan hard bars may not be shorter than 26 inches and must be solid, no springs or biscuit bars.
- No J bars.
- 4 link rear suspension, stock OEM or aftermarket nonadjustable upper trailing arms allowed as long as they match OEM length and bushing diameter. Lower control arms must be un altered, OEM or OEM replacement with OEM rubber or nylon control arm or bushings only.
5) Wheels and Tires
- Steel wheels only with maximum width of 8 inches.
- Two (2) beadlock wheels allowed on right side only.
- Wheels may have a maximum of 2 inch offset.
- Aftermarket steel wheels allowed but limited to standard weight. No lightweight wheels allowed.
- Maximum tire width allowed is 8 inches.
- Hoosier G60 IMCA or American Racer 15KK704.
- Grooving and siping is the only tire modification allowed and no `tire softener.
- Any wheel spacer allowed.
- ⅝” wheel studs required.
- High back aluminum racing seat is required.
- Seat belt and shoulder harness are MANDATORY and must be equipped with a single latch aircraft type release 5 point harness Mandatory. Must be 3 years old or newer
- Battery box is mandatory.
- Fuel cell mandatory. Fuel cell must be mounted in trunk and contained in metal can. FLAPPER VALVE (2009 mandatory).
- Recommended, vehicle be equipped with a fully charged dry chemical fire extinguisher with gauge and be securely fastened and within easy access of race ready driver. Halon system is allowed.
- Emergency kill switch must be easily accessible inside driver compartment.
- Cotton Bowl Speedway will have final say on rules and interpretation of rules. All cars are subject to tech inspection at any time.
7) Protest Procedures
- Protest must be in writing and filed with official within a reasonable time, at the discretion of officials, after feature race is completed, and must be specific in alleged violation to determine whether protest is allowed or rejected.
- No protest of any type will be allowed after post-race inspection has been completed. One item per protest - per event – only.
- Drivers may not protest more than one car per event.
- Drivers may not protest another driver finishing in a position behind them.
- Drivers may not protest same driver more than once per calendar year.
$250 per component. $50 of the deposit goes to the track and will not be refunded, regardless of the outcome of the protest. If item being protested is found legal, $200 will be awarded to protested driver.
If parts are found illegal, or if driver refuses to submit to protest, first infraction will result in forfeiture of all cash and contingencies, trophies and points earned in feature.
RULES SUBJECT TO CHANGE AS NECESSARY. CHECK EFFECTIVE DATE AT BOTTOM OF RULES.
ALL DECISIONS ARE FINALIZED BY DIRECTOR OF TECH.
2021 Southern Sport Mods
We will follow IMCA Limited Modified rules.
Please go to https://www.imca.com/rules/southernsportmod/ to review the rules.
2021 IMCA Mod Lites
We will follow the IMCA Mod Lite Rules.
"This Division will be sanctioned"
2021 GO-KART RULES
We will follow L87 Speedway Kart Rules!
2021 GENERAL RULES
Texana Raceway Park General Track Rules
Rule Disclaimer: Rules may be changed by track at any time.
The rules and /or regulations set forth herein are designed to provide for the orderly conduct of racing events and to establish minimum acceptable requirements for such events. These rules shall govern the condition of all events. Participants are to comply with these rules.
No express or implied warranty of safety shall result from publications of or compliance with the rules and regulations. They are intended as a guide for the conduct of the sport and in no way a guarantee against injury or death to a participant, spectator or official.
The race director shall be empowered to permit minor deviation from any of the specifications herein or impose any further restrictions that in his/her opinion do not alter the minimum acceptable requirements. No expressed or implied warranty of safety shall result from such alteration of specifications. Any interpretation or deviation from these rules is left to the discretion of the officials. Their decision is final.
All components are subject to the inspection and approval of officials. No equipment will be considered as having passed through inspection unobserved.
The right of interpretation of all rules shall be held by the track officials are not subject to any other interpretation. It is known drivers and owners will push the limit on all rules for an advantage; it is part of any sport. If found in a gray area expect disqualification by tech. Gray area questions should be identified to tech prior to race event, and if there is no significant advantage you will have one week to fix discrepancy. If advantage is black and white you will be asked to fix discrepancy prior to racing in the scheduled event. If not divulged prior to competing and found during post-race inspection automatically expect disqualification and come back and try the following week. All payout will be forfeited if disqualified.
Points will be awarded toward championship.
Registration of car is $25.00. Registration form must be completed with driver information and owner’s name, social security number and address. (One time per year)
There will be no duplication of car numbers. All cars must have registered number on the car.
Out of area vehicles will be allowed to run in the class it most qualifies for. They will have a pre-race inspection with tech and if there is significant advantages; you will be asked to fix discrepancies prior to racing. If unable to compete Texana Raceway Park will refund entrance fee prior to race event, and we welcome you to stay and be a spectator, if you choose to remain in pit area only car registration will be refunded of $20 as pit pass is $30.
Previous year class champions will have parking secured up to 6PM of the first race of the new season. If not registered prior to 6PM of first race parking spot will be forfeited.
ALL REGISTERED DRIVERS AND OWNERS ARE RESPONSIBLE FOR READING AND OBEYING RULES
All drivers must attend drivers meeting
Roll call at any time for any class may be used to verify drivers are attending the drivers meeting. (This means the drivers have signed in at the pit office for the nights race).
All drivers must know the racing agenda and their proper places in the line-up prior to staging of their Race.
Participating race cars must be in staging lane before end of prior race
NO race will be delayed for un-staged car
Anyone causing the delay will be placed at the back for that race. **Note that Texana Raceway Park does not have a PA system in the pits, thus you must pay attention to line up postings and race orders.
Pill draw ends at 6PM. Any late arrivals will run at the back of the line up for the heat race
All first time (new) drivers must start in last position for a minimum of 3 races. Then ONLY at the discretion of track officials will that status be changed
MANDATORY: All classes must have safety inspection before allowed to race. Without inspection driver will not be allowed on the track
Any vehicle found to be in violation of the rules on a previous race night must arrive at least ONE hour early (the next time they race) for inspection by track tech
Any engine tear down found in violation may call track tech for inspection before assembly and before returning to the track to race. Location to be approved by track tech and engine builder. Any driver not signed up to drive a car on a points night will forfeit all winnings and points for that event.
Racing Flag Rules:
Green – Start of the race. Any car not taking the initial green flag will not be scored.
White – One lap to the finish
Blue/Yellow Flag – Move over for race leader/ hold your line (You are being lapped)
Checkered – End of the race
Black – leave the track for repair or disqualification
Green and White Crossed – Halfway point of the race
Red – Stop where you are.
Yellow – Slow Down to slow pace
All drivers must understand starter’s flags. Failure to obey flags will result in disqualification. Failure to see the flag will not be considered an excuse. The Flagman has complete control of the cars while the race is on. His decision is final.
All classes: Cars will not be allowed to restart with a flat tire.
On a Red Flag, all cars must stop ASAP where they are on the track. Drivers will stay in their cars unless told by Track Official to exit car. Drivers will not move their cars until told to do so by Track Official. No work on the cars will be allowed on the racing surface. Cars going into hot pit area will be lined up at the rear.
NO ONE BUT TRACK OFFICIALS & EMERGENCY WORKERS WILL BE ALLOWED ON THE TRACK. DRIVERS MAY ONLY EXIT THEIR CAR IN A HAZARD SITUATION. ANYONE WHO EXITS THEIR CAR FOR ANY REASON THAT SAFETY WILL BE DISQUALIFIED FOR THE NIGHT, INCLUDING FORFEIT OF ALL EARNINGS AND POSSIBLE SUSPENSION FROM FUTURE EVENTS AT A DURATION TO BE DETERMINED BY TRACK MANAGEMENT! DO NOT EXIT YOUR CAR UNLESS IT IS FOR YOUR SAFETY DUE TO AN ISSUE WITH YOUR CAR!
Raceceivers are mandatory. If you are found not using raceceiver you will be disqualified and forfeit all pay for that event.
Packing the Track:
All cars are needed to pack the track when conditions arise. All cars! No one is exempt, should conditions call for track packing by race cars.
To the best of our ability we will hot lap per class in the order of the race schedule from the pits.
All Heat races will be 1 lap more than the number of cars in the race with the maximum number of laps being 10.
There will be a maximum of 10 cars per Heat race.
If you miss your heat race you will not be allowed to race in another heat.
Feature Races will be 20 laps or more on some special events. Texana Raceway Park reserves the right to place a time limit on feature races if necessary due to excessive time to complete the race due to cautions. Adjustments to Feature Race lengths will be made based on number of cars in a feature or race schedule being on time or behind schedule. These adjustments will be made either at the discretion of Texana Raceway Park management. If a race will be shortened, information will be announced via Raceceiver during a race.
Top three rows subject to possible invert start. One draw affects all feature races (Track Optional)
Start feature based on heat and B-main finishes
Starts will be double file with the odd numbered starting positions on the inside and the even number starting positions to the outside. If a position is left open by a car not making the start that line will move up to fill that position. If there is a caution on the first lap, there will be a complete restart unless you are involved in making the caution. If you jump the start you will receive one warning and caution if in front row. If you jump on the next restart you will be moved to the rear of the field. Cars jumping start back in the field and caught will be penalized spots next caution by number of positions you gained on the jump. (Example you gained 3 positions on jump and then you passed five cars and were running fifth, under next caution you will forfeit three positions to eighth or you can fall behind the three you passed jumping when told on raceceiver under green and maintain positions gained after falling in line. If checker flies and you have not fixed jump penalty you will be penalized the positions jumped. So if you won you find yourself in third, if you finished 2nd you finished fifth.
Restarts will be double file with leader picking high or low groove for restart. Second place car can choose inside or outside of Row 2 and all subsequent rows must file in order as directed for position number (ie; 4th car and back must fall in line in order of position with 2nd place car on inside. Only the 2nd place car chooses inside or outside lane after the leader!!!) Track management will determine when during a race that single file restarts are required after a caution with no passing until the cone coming out of turn 4.
Any car causing a yellow or red flag situation will be sent to the back
Any car causing 2 yellows or red flag situations will be sent to the pits for that race
When yellow comes out get in single file line and we will double up after line-up is correct. If you do not get in single file line and fighting for a position expect to go to the rear of the field to try again.
Hot Pits for features races will be on the track in the infield. Pitting under yellow and making it back to the track for green flag restart will place you in the back. Pitting under green will cause for lost laps and scored with electronic transponder scoring for lost laps.
Any car exiting the track during the race will be allowed to return to the rear of the field. Speeding in the pits will be automatic disqualification!
Red or Red/Yellow flag: Any race other than the feature that is 80% complete will be called a completed race. Feature race will be any vehicle exhibiting a hazardous condition will be mechanically black flagged but maintain finishing position.
Any one driver that is displayed the black flag for three laps will forfeit money and points for that event.
ALL BLACK FLAGS ARE FINAL!
Any cars not taking the initial green flag will not be allowed to compete in that scheduled race
Vehicles leaving the race may pull into the infield. If in the infield the driver must remain belted in vehicle until the race is over unless the vehicle is on fire or a track official approves exiting the vehicle.
After each race watch tech area for signal to stop for inspection. If you fail to stop while being signaled you will be disqualified.
Hook ups for vacuum if required for your class, tach and battery on driver’s side under the hood for teching purposes are mandatory for all classes.
NO two way communication radios allowed in vehicle at any time. NO EXCEPTIONS!
AFTER THE RACES:
***Take all your tires used or new and all other car parts with you….if tire or parts are being left at track the car/ team leaving them behind will be fined $50 a tire/part and not allowed back until fine is paid. Pit will be inspected before payouts if car parts and tires are being left behind and we cannot figure out who is leaving them.
**** Be sure your garbage is picked up at your pit location!! There are plenty of cans dispersed for regular garbage throughout the pits.
Drivers should promptly collect their winnings. Pay outs begin 30 minutes after the completion of said race. Exception: If tech tear down is present, winnings will be held until decision is made
The office will remain open for 30 minutes after the last checkered flagged race and tech is final for the night
All teams must load up and leave the grounds within a reasonable time after the races unless advised otherwise or permission is sought for overnight camping and permission granted. Gates will be closed 1½ hours after final race. BE PREPARED TO LEAVE WHEN TRACK OFFICIALS LEAVE UNLESS YOU ARE SPENDING THE NIGHT ON THE GROUNDS (PERMISSION MUST BE SECURED FOR OVERNIGHT CAMPING ON THE GROUNDS).
General Track Rules:
All components are subject to inspection and must be approved by inspecting officials. No equipment will be considered as having been approved by reason of having passed through inspection unobserved.
Texana Raceway Park management reserves the right to change the race program at any time for the improvement of racing.
Where no rule applies, common sense and good judgment will apply. When race car parts in rules say stock it must meet OEM stock Spec. for make and model. (track official has final say)
Everyone entering the pits must sign a release and get a pit pass. Anyone under 18 years must have a minors release signed by both parents in front of track official.
ALL PERSONS 13 AND UNDER MUST BE SUPERVISED BY AN ADULT WHILE IN THE PIT AREA
Towing vehicle, trailer and race car are the only vehicles allowed in pits.
Reserved Pit Parking can be purchased at $25 per space. Reserve spots held until 6:00 PM. After 7:00 PM, any reserved parking spaces are open to anyone.
Pets are allowed in pit area as long as they are properly contained
All cars may be checked coming in the pit gate for compliance with the rules and may be checked at any time by track Officials.
Each car must be able to start on its own power upon entering the staging area and race track.
No hot laps allowed except when track is open for such.
All cars must be in the pits and checked in by 6:00 PM or start in the back for the heat race.
No person allowed on the racing surfaces other than those driving in that event.
Only track personnel allowed in the infield or on the racing surface at any time, including red and red/yellow flag. Anyone going to an accident on the track, that is not an approved track official, may lose his or her pit pass.
The starter has the authority to start any event regardless if all cars called to the track are ready or not. Any car that does take position when called will start at the rear of the field. (Driving multiple classes, driver must notify race director and staging personnel about delay to enter lineup)
Any driver that changes cars will start at the rear of the event that the driver qualified for. (This includes original draw-in)
Driver must notify race director of change. Any driver returning to original car will start at the rear of the event.
Any loss of wheels and/or tires (including flats) requires leaving the racing surface immediately. Displaced hoods or other endangering parts also require leaving the racing surface.
Rupture of a gas tank or loss of fuel requires leaving the racing surface immediately.
Track wrecker will not load any car until race program is completed.
No drinking in the pits during race program. Drinking allowed only after last checkered flag has been waved for the evening and all cars have cleared the track. Absolutely no glass bottles allowed. If glass bottles are seen you will be asked to leave the property. Anyone caught with liquor or beer will be removed from the pits and could be banned from the pits for the year. The management reserves the right to check cars or any other personal property upon entering the pit area
ANYONE WEARING A PIT PASS WRISTBAND MAY NOT PURCHASE ALCOHOLIC BEVERAGES UNLESS THEY FORFEIT THEIR PIT PASS AND MOVE TO THE SPECTATOR SIDE UNLESS RACES ARE OVER.
RULES OF CONDUCT:
Any disorderly conduct, unsportsmanlike conduct or deliberately running over another race car will not be tolerated and could result in loss of points/winnings for the event and/or removal from the track, a fine before returning. Fighting will Not be tolerated (Will be turned over to Law enforcement)
**Only drivers involved in on track incidents that control the brake, steering, and gas pedal will be able to state the respective case to race director if drivers are unable to resolve amongst themselves in a professional manner. Drivers involved will meet with race director prior to feature races, if incident occurs during a feature respective drivers will meet with race director after all features are completed. If driver does not conduct self professionally team will be disqualified and forfeit all pay and points for the night.
Anyone going to the starter or the scoring tower, or arguing with any Track Official during the race night will be disqualified for the night’s program and forfeit all winning and points for the evening.
The registered car owner shall be sole spokesperson for the car on post-race tech issues. If owner is not present, the driver is the spokesperson.
In the event of a dispute between drivers do not leave your own pit. Participants caught at another’s pit area will be considered at fault. The driver is responsible for his/her crew members.
Refusal of any owner, driver, family member or crew to abide by the set rules and the usual policy of conducting auto races will be grounds for management to refuse to let such person or car take part in a race.
Any person involved in a serious infraction of the rules may forfeit points and winnings for the night or be suspended from TEXANA RACEWAY PARK.
ONLY THE DRIVER AND UP TO 2 CREW MEMBERS MAY BE IN THE TECH BUILDING! IF YOU ARE NOT PART OF THE CAR BEING TECHED AND YOU ARE IN THE TECH AREA YOU STAND THE CHANCE OF DISQUALIFICATION AND/OR SUSPENSION
THE FLAGMAN, TECH MAN AND RACE DIRECTOR HAVE THE AUTHORITY TO DISQUALIFY AN ENTRY
PLEASE BE COOPERATIVE AND FRIENDLY AT ALL TIMES. WE ARE HERE TO HAVE FUN!!!
Anyone with a lawsuit filed against the track, Promoter, or track official will not be allowed to participate in any event until the lawsuit is settled.
Continuous development in racing may necessitate changes that we cannot anticipate at the time the rule is written. Hence, we may update, modify, add to or delete rules as seems fit
Insurance is not valid if participant is not signed in on the day of the accident. Each accident must be reported the night it happened or it will not be paid. All insurance will be through the Track Promoter.
The Track Owner or Promoter is not liable for any claim more than the track insurance covers.
General Car Safety Rules: The track reserves the right to revoke racing privileges for any safety violation, whether stated in these rules or not, that it deems is a threat to the safety of the driver, crews, spectators and employees.
Racing is an inherently dangerous sport. These rules are intended not to inconvenience drivers, but to help make racing safer for everyone.
In the event of conflicting rules the stricter of the rules will apply. All cars must be inspected for safety before participating in a race event. Serious safety violations may prevent the car’s participation that night and any violation must be corrected by the start of the next night’s racing. If the rules do not say you can do it then you can’t.
1. All drivers must wear an approved flame-retardant long sleeve racing suit. NO EXCEPTIONS
2. Safety driving gloves and shoes are mandatory for all classes
3. All drivers must wear a Snell 200 or newer racing helmet. If a helmet does not have a Snell SA rating then a fire retardant head sock must be worn. All helmets are to be FULL-FACED
4. Anyone without full fire suit will not be allowed to race
5. Vehicle must be self starting. Push starts are allowed only with consent of track official
6. Battery must be securely mounted and contained in a covered battery box in the trunk or drivers compartment or in a truck bed
7. If battery is mounted in front driver’s compartment (to the right of the driver) then compartment must be entirely enclosed
8. Battery disconnect switch must be in plain sight
9. All vehicles must have an emergency kill switch on the left side of the steering wheel
10. All standard transmissions must have blow proof bell housing
11. Flywheels may not be lightened in any way. Removal of more than one ounce of material when re-facing will be considered lightened. Minimum flywheel weight will be 15lbs.
12. Factory hi-performance flywheels (GM#14085720) are allowed (Casting #1408572lu0)
13. Radiators in driver’s compartment not allowed 14. If a radiator is placed in other than stock position it has to be properly shielded, double clamped and pass Tech inspection.
15. Racing radiators in stock position highly recommended
1. Seat belt and shoulder harness are MANDATORY and must be equipped with a single latch aircraft type release. 5 point harness required for all classes. Belts must be no more than 3 yrs old.
2. Assembly must be bolted to the frame or roll bar
3. NO HOMEMADE BELTS
4. Doors must be gutted for roll cage
5. An approved driver’s side ribbon window net or equivalent is mandatory and must be removable
6. Seats, headliner, carpet and door panels must be removed
7. NO MIRRORS ALLOWED
8. Racing seat is mandatory
9. Seats must be properly braced and attached to the frame or roll cage
10. Steering wheel to seat clearance required for easy removal of driver in an emergency. Quick release is highly recommended
11. Quick steer boxes may be used in all classes
12. NO rack and pinion steering allowed unless car was originally equipped and must be factory unit in factory location
13. Driver’s compartment must have full floorboard and firewall between engine and trunk
14. NO sharp or jagged edges inside or outside the vehicle
15. Roll cage is to be four post upright design welded to vehicle frame
16. In unibodies, cage must be securely welded to floorboard using a steel plate with a minimum dimension of 6”x6”x18”
17. All welds not saddled must have gussets
18. No galvanized or screw pipe fittings
19. Minimum tube dimensions are 1.500” OD x .090” wall thickness
20. Minimum of two horizontal bars welded to front and rear uprights
21. Minimum of three vertical bars on driver’s side and two on passenger side
22. Roll bars must have proper clearance for drivers head and hands and are subject to examination by officials for welding and design
23. All bars are MANDATORY
24. Bars close to drivers must be padded with minimum 3/8”+padding.
1. All door and fender chrome, headlights and outside mirrors must be removed
2. All doors must be welded shut. Riveted skins are allowed
3. All glass, including windshield, must be removed
4. In place of windshield 4 ¼” bars to be installed in front of driver
5. Left roof post can be counted as one
6. Heavy hardware cloth is mandatory in front of the driver
7. Drive shafts must be painted WHITE and have steel strap drive shaft loops at 2 ¼” wide mounted within 12” of the front u-joint. Two piece drive shafts must have two loops
8. Stock bumpers are mandatory and must be stock in appearance
9. Bracing must be concealed behind front bumper
10. No front or rear grill/brush guards or channel iron bumpers. Exception: trucks may use channel iron or pipe rear bumpers only
11. All rear bracing must be forward of the rear bumper
12. All vehicles must have a minimum of one working shock absorber per wheel
13. All brakes must be in good working order.
14. Vehicle must have tow hooks or hoops on front and rear. Chains will be allowed if properly secured
15. No one will be allowed to start the racing event without a full body on the vehicle
16. The hood, even if damaged, must remain on the vehicle at the beginning of each race
17. Any parts that are lost, loose or removed due to damage may or may not disqualify the vehicle from the race
18. Vehicle must be neatly painted with contrasting colored numbers. Minimum dimensions of 2”W x 18”H on both doors and roof and 5” on front and rear
19. Vehicle should be kept in neat appearance. If requested by track official you must clean and fix
20. All ballast weights must be painted WHITE with the car number visible. All weights must be securely bolted or welded to the frame
NERF BARS: Follow car class rules on this
FUEL SYSTEMS: 1. Only pump gasoline, including aviation fuel, is permitted. Lubricant in aviation fuel is allowed 2. Racing fuel is allowed 3. No fuel additives permitted and fuel will be checked 4. No nitrous oxide 5. NO electric fuel pumps allowed.
6. Fuel tank must be relocated to inside car, trunk or truck bed. Fuel cells are highly recommended 7. Plastic fuel cells must be installed inside a protective metal box 8. Fuel tanks must be painted WHITE or RED and securely fastened with steel straps 9. Fuel lines must be safely routed away from the driver’s compartment 10. Fuel lines, filters, and connectors both rubber and steel must be approved by track tech. No plastic or glass filters allowed 11. Throttle return springs on carburetor mandatory in all classes
12. Carburetor to intake adapter/spacer is permitted 1” or less
13. Anti-siphon valve installed in gas tank vent is mandatory writing with the Tech inspector before the Feature Race. Claiming Car Owner must have a car running in the class feature race that night. Track has option to claim shocks
In the event of a rainout after all the heat races have been completed ½ the purse for your feature will be paid based on what would have been your starting position in the feature. If the rainout occurs before all heats are completed rainchecks will be giving for next race. We will make features up on next race or rescheduled time if we can make it happen. You must have your pit wristband still on your wrist to get raincheck. The office staff will cut it off as they issue your raincheck. NO WRISTBAND NO RAINCHECK! If the rainout occurs during your feature the purse will be paid by finishing position on the last completed lap prior to the rainout.
VISUAL PROTEST, such protest must be filed in writing before the start of the feature event or race in which violation is alleged. Visual protest shall be interpreted to mean any protest relating to equipment which is outwardly visible, including that located underneath hoods or the covering accessible to observations without the use of tools except weight requirement. Speedway has sole discretion in interpretation of what constitutes a visual protest. TEXANA RACEWAY PARK has the right to inspect cars any time for visual violation of the rules & Safety
NON VISUAL PROTEST such protest must be filed in writing with the Tech. inspector before the start of the feature event or race in which violation is alleged. Non-Visual protest shall be interpreted to mean any protest relating to equipment which is not outwardly visible, including Engine parts, Transmission, Clutch, Flywheel, rear end, Fuel, wheel base, motor location and other items.
Only car owner/driver can protest a car and owner must have a car running in the race with the protested car, that race night
Soliciting for contributions for a Protest will not be permitted. Anyone guilty will be suspended.
Track officials may, without notice, choose to tear down, inspect or search any vehicle at anytime, anywhere and for any reason
If you race for points Championship you must run TEXANA RACEWAY PARK RULES.
Protests of driver conduct and race results must be made in writing with specifics of the protest no later than 15 minutes after the checkered flag for that race. Notify track tech and office that you are protesting and they will inform Race Director. Protest will be posted on lineup board
Driver/owner may only protest a vehicle or driver in their own class
REFUSAL to allow tech based on legitimate protest will be treated as an ILLEGAL finding
If in violation of rules all points and winnings for the event will be forfeited
If, for any reason, vehicle cannot be disassembled and inspected that night it may not be permitted to leave TEXANA RACEWAY PARK grounds. It will be locked in a secure area specified by the track official to be checked at a later time agreed on by both parties
Any decision made will be final at the time it is made
All engine protests must be in writing specifically stating what is being protested, the car being protested and contain $600.00 cash. If the car in question is found to be legal then $500.00 goes to the car owner of the car that was being protested and $100.00 goes to the track. If the car in question is found to be illegal the protesting owner will get $500.00 and the track $100.00.
All protest must be submitted by intermission. Notify the tech man and the office so they can inform the Race Director of the protest
The only people allowed to file a protest are the owner of the car or the registered driver of the car in the same class of the driver being protested
2021 IMCA Modified Rules
We will run IMCA sanction rules.
Please go to https://www.imca.com/rules/modified/ to review the rules.
**This division will be sanctioned**
2021 E-MOD Rules
E-MOD RULES THE RULES AND/OR REGULATIONS SET FORTH HEREIN ARE DESIGNED TO PROVIDE FOR THE ORDERLY CONDUCT OF RACING EVENTS AND TO ESTABLISH MINIMUM ACCEPTABLE REQUIREMENTS FOR SUCH EVENTS. THESE RULES SHALL GOVERN THE CONDITION OF SPEEDWAY EVENTS AND, BY PARTICIPATING IN THESE EVENTS, ALL RACEWAY COMPETITORS ARE DEEMED TO HAVE COMPLIED WITH THESE RULES. NO EXPRESS OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM PUBLICATION OF, OR COMPLIANCE WITH THESE RULES AND REGULATIONS. THEY ARE INTENDED AS A GUIDE FOR THE CONDUCT OF THE SPORT AND IN NO WAY ARE A GUARANTEE AGAINST INJURY OR DEATH TO PARTICIPANTS, SPECTATORS OR OTHERS. References are made throughout these regulations requiring and/or recommending that particular products meet certain specifications. These products are manufactured to meet or exceed certain criteria and are labeled as such upon satisfying those criteria. Any change to these products voids that certification. Under no circumstances may any certified product be altered from the “as manufactured” condition or such certification is voided. TABLE OF CONTENTS Article 1: Body Article 2: Roll Cages Article 3: Frame Article 4: Cockpit, Steering & Seat Article 5: Suspension Article 6: Electrical System Article 7: Fuel System Article 8: Tires & Wheels Article 9: Braking System Article 10: Drive Shaft Article 11: Transmission Article 12: Rear End Article 13: Engine Article 14: Weight Article 15: Safety ARTICLE 1: BODY 1.1 1970 or newer American compact passenger car only (no panel vans or station wagons). 1.2 An aluminum half-windshield may be used on driver’s side of the front window opening only. 1.3 Stock appearing front window support units must be used (painted roll bars are not acceptable substitutes). 1.4 A minimum window opening of twelve (12) inches must be maintained on all four window openings (front, back, left and right). 1.5 Streamlining at top of windshield is not allowed. Bodies must have standard appearing windshield opening and corner post must follow standard configuration. 1.6 Original roof line (parallel to deck and side to side) of vehicle must be maintained with a maximum of five (5) inches of slope from rear to front. Maximum one-half (0.5) inch stiffener permitted at rear of roof and must turn down perpendicular to the ground. OEM Gremlin roofs are not allowed. Aluminum roofs are permitted. Dished roofs are not allowed. Maximum four (4) inch roof sides are permitted. Maximum one (1) inch ridge down sides of roof. 1.7 Sail panels must be solid and of matching design with matching styles on both sides of racecar. Sail panel may be no farther forward than the driver’s seat and must extend all the way to rear of decking. Sail panel must be mounted within two (2) inches of the outer edge of deck and flush with the outer edge of roof. Sail panels, side to side, may have no more than four (4) inches of variance in material length when measured from roof line to deck. 1.8 Sail panels may have no more than four (4) inches of bow from roof to quarter panel up and down, no more than two (2) inches of bow from a straight line from roof to rear of sail panel and maximum eight (8) inches tall at rear of the sail panel. Sail panel may be a maximum forty-three (43) inches long 1.9 Hood may be no more than two (2) inches above decking and must be sealed off from driver. Reverse hood rake is not allowed. Hood must be level or slope forward toward nose of racecar. Lips on the hood are not allowed. Hood must be flat from side to side—bowed and/or concaved designs are not allowed. 1.10 Belly pans are not allowed. A belly pan will be defined as any object or material that alters the airflow under the racecar. 1.11 Panel(s) in front of the right door next to the engine compartment is/are not allowed. 1.12 Bodies with excessive damage (as determined by an official) will not be allowed to compete. Fins, lips and/or wings are not allowed. 1.14 The rear deck lid and/or trunk area must be covered. Deck height may be a maximum of forty-one (41) inches—NO TOLERANCE. Drop decks are not allowed. Deck may be a maximum length of one hundred twenty-one (121) inches from rear of engine. Deck must remain parallel to the frame and level from side to side. Deck may have a maximum total slope of six (6) inches with a maximum of three (3) inches of slope from racing seat to rear of deck. Doors and quarter panels must be flush with deck. Deck width may be a maximum of sixty-seven (67) inches and must be the same from front to rear. 1.15 Excluding hood and nose piece, the bottom of body may extend a maximum of 6 inches further forward than the back of the engine block. 1.16 Engine covers are not allowed. 1.17 Plastic skirting with a maximum height of five (5) inches allowed on bottom of doors, quarter panels and nose piece is permitted. Body must remain minimum of three (3) inches from ground. 1.18 Maximum overall width of nose is forty-two (42) inches top and bottom. 1.19 Bumpers: 1.19.1 Center of bumpers (front and rear) must be at least sixteen (16) inches from the ground and no more than twenty-three (23) inches from ground. 1.19.2 Both front and rear bumpers must be used and must not have any sharp edges. Any inappropriate bumper will be disallowed by an official. Front bumper must be mounted from frame-end to frame-end with the bottom loop parallel to ground. Bumpers must be made of a minimum of one and one- quarter (1.25) inch tubing and must be able to support the racecar if lifted by a tow vehicle. Top bar must be directly above bottom bar (not off-centered). 1.19.3 Rear bumpers and side rail bars must not extend beyond the width of the rear tires. Tires must be the widest part of body. 1.19.4 Rear bumpers may be constructed of tubing or flat stock and must protect the fuel cell. Rear bumpers may be no more than two (2) inches wider than the body on each side and may not be open- ended (must wrap around and be connected to side rail bars). 1.20 Appearance: 1.20.1 All racecars must be numbered with large legible numbers on both sides, on top and on the nose and real panels. Numbers on the sides of the racecar should be in contrasting color from the body and be at least four (4) inches thick and at least eighteen (18) inches high. Top numbers should be at least four (4) inches thick and twenty-four (24) inches high.
ROLL CAGES 2.1 Round steel tubing, seamless roll-over bars are required for the basic roll cage and must be acceptable to officials. Acceptable tubing is as follows: minimum one and five-hundred thousandths (1.5) by ninetyfive one thousandths (.095) inch for mild steel and DOM tubing. Aluminum and/or other soft metals are not allowed. Roll bar connections must be properly welded. 2.2 Roll bars within the driver’s reach must be padded with an accepted material as determined by an official. Fire retardant material is highly recommended. 2.3 Installation and workmanship must be acceptable to officials. 2.4 Must be frame-mounted in at least six (6) places. 2.5 Must consist of a configuration of front and rear hoops connected by tubing on the sides or side hoops. 2.6 With helmet on and driver securely strapped into the racing seat, top of driver’s head must not protrude above the roll cage. 2.7 Must have a protective screen or bars in front window opening in front of driver’s face. 2.8 Protection of driver’s feet utilizing a bar across the back of the engine with vertical bars and rub rails or similar protection is mandatory. 2.9 Brace bars forward of roll cage may not be higher than the stock hood height. 2.10 A minimum of three (3) driver side door bars must be parallel to ground and located perpendicular to the driver so as to provide maximum protection for the driver, but without causing undue difficulty in getting in or out of the racecar. Side bars must be welded to the front and the rear of the roll cage members. Door bars and uprights should be part of at least one and one-half (1.5) inches in diameter at a minimum of eighty-three one-thousandths (0.083) of an inch thickness and be gusseted in place. The door bars must have four (4) vertical studs per side equally spaced.
FRAME 3.1 1978-1987 OEM mid-size GM metric full frame only. 3.2 Wheelbase must be a minimum one hundred seven (107) inches and maximum one hundred nine (109) inches on both sides. 3.3 Frame must be full and complete. May not be widened, narrowed, shortened and/or lengthened. May not be cut, bent or altered to change suspension brackets, except upper control arm brackets on front end. 3.4 All frame bolt holes must remain in OEM location. 3.5 Front frame horns may be removed in front of steering box. 3.6 Front frame may be cut for radiator clearance only. 3.7 Frame may be notched for seat clearance. 3.8 Transmission cross member mounts may be removed, but no further forward than frame welds. 3.9 Rear of frame behind upper shock mounts may be replaced with round, square or rectangular tubing. 3.10 Except front cross member, no part of frame can be lower than five (5) inches from ground. 3.11 Any other frame alterations are not allowed. 3.12 Tubular front clips are not allowed. 3.13 Hydraulic, ratchet or electric weight jacks are not allowed anywhere on the racecar. Aluminum jack bolts are not allowed. 3.14 Jeep, Bronco or similar four-wheel drive frames are not allowed. Sports car frames are not allowed. Front-wheel-drives are not allowed. 3.15 Rear of engine (bell housing flange) must be mounted at least seventy (70) inches forward from the center line of the rear axle – NO TOLERANCE.
COCKPIT, STEERING & SEAT 4.1 Loose objects and/or weights are not allowed. 4.2 Air bags are not allowed. 4.3 Rear view mirrors are not allowed. 4.4 Floor and firewall must be complete in the driver’s compartment. Interior sheet metal cannot be higher than or enclose a standard window opening. Sheet metal in the driver’s compartment must be horizontal from the top of the driver shaft tunnel to the right-side door bars or angle from the top of the drive shaft tunnel upwards to the top of the right-side door bars. Driver must be able to exit the racecar from both sides. 4.5 Steering: 4.5.1 Must be OEM and remain within original bolt pattern for type of frame used. Steel tube tie rod adjusting sleeves allowed. 4.5.2 Rack and pinion is not allowed. 4.5.3 May be modified to suit driver but must remain on left side of cockpit (no center steering). 4.5.4 Quick-release metal coupling on steering wheel is mandatory. Plastic couplings are not allowed. 4.6 Seat: 4.6.1 Factory-manufactured racing seats are mandatory and must be acceptable to officials. 4.6.2 Homemade aluminum, plastic or fiberglass seats are not allowed. 4.6.3 Seat back may not be moved back further than rear edge of quarter post. 4.6.4 Only high-back aluminum seats are permitted. Full containment racing seats are strongly recommended.
SUSPENSION 5.1 Front suspension must remain stock-type for the type of frame being used. Steel aftermarket parts may be used as stock components but must mount in the stock location and must be the same size as the OEM parts. OE-type upper ball joints mounted in stock location may are permitted. OEM upper A-frame mount may be moved or replaced with aftermarket steel non-adjustable mount matching upper A-frame bolt-on design. Bottom A-frames may not be altered, lightened or moved. Screw-in ball joints are not allowed. Upper shock mount may be a maximum four (4) inches above the frame. 5.2 Aluminum and/or titanium components are not allowed. Magnet must stick to all components. Exception: aluminum cross shafts are permitted. 5.3 Steel tube-type upper A-frames are permitted and may be moved. 5.4 Stock passenger car spindles only, must match frame. Fabricated spindles are not allowed 5.5 Front sway bars are permitted. Must be made of steel and may be attached to the bottom A- frame using steel Heim joints. Must be solid full-length OEM. No suspension stops of any kind allowed. 5.6 Rear Suspension: 5.6.1 Control arms and mounts must be made of steel, unaltered OEM, in OEM location and match frame. 5.6.2 Jack bolts are not allowed. 5.6.3 Adjustable spring buckets are permitted. Must remain in OEM location if dropped. 5.6.4 If upper spring cup uses all thread, it must be securely welded to chassis. 5.6.5 Lower spring cups must be centered on housing. 5.6.6 Control arms may be reinforced but cannot be shortened or lengthened. Must remain OEM length. 5.6.7 Control arm bushings may be aftermarket but offset or bearing type are not allowed. Bushings may not be drilled. 5.6.8 Suspension parts may not be altered or lightened. Aluminum parts are not allowed, other than bushings. 5.6.9 Safety/tether chains must be mounted solid to rear-end (not to suspension parts) and cannot limit travel.
SHOCKS: The following steel bodied, factory welded, non rebuildable shocks are allowed in OEM stock mounting position.
- PRO - SS100, SS201 and SS200 Street Stock
- QA1 - EC Series Stock Mount
- AFCO - 10 Series Street Stock Mount
- DOETSCH TECH – 0101, 0102 & 0103 Street and Hobby Stock
- OEM or OEM replacements (But no OEMBilstein) No air shocks allowed, No Bilstein shocks allowed. No modifications or custom valved shocks of any kind are allowed. Shocks with grinding marks, re-welds or shocks which are painted over will result in DQ. Shocks must have OEM stock type rubber ends, no screw on or welded on type rod ends of any kind. No bump stops internal or external, all shocks must fully collapse and extend. Shocks must be in OEM mounts and location. Mounting spacers are allowed. Shocks will be eligible for a $50.00 per shock claim – one or all four. Shock claim procedures: •Top four finishers in main event are subject to shock claim. •Must have raced on previous 2 consecutive race nights in order to claim. •Must start and finish main event on lead lap. •Claim must be made with US currency (cash) at Tech Pad within 10 mins. of the completion of the main event. •Each driver may claim up to four shocks per year. •Any driver may only have a maximum of 4 shocks claimed per year. Refusal of claim will result in DQ and forfeiture of all points. SPRINGS: One steel spring (racing allowed) per wheel only. Minimum 4.5inches OD, non-progressive coils only. No torsion bars or air bags. REAR SUSPENSION: Control arms and trailing arms and mounts must be steel unaltered OEM in OEM stock location. Adjustable spring spacers allowed, may be dropped as long as they remain in OEM location. If upper spring cup uses threaded rod, it must be securely welded to chassis, no weight jacks allowed. Lower spring cups must be centered on housing. Control and trailing arms may be reinforced, but cannot be shortened or lengthened, must remain OEM center to center lengths. Bushings may be aftermarket, No offset, No bearing or heim type bushings allowed. Bushings cannot be drilled. No suspension parts may be altered or lightened. No Suspension Limiters. No aluminum parts allowed other than bushings.
ELECTRICAL SYSTEM 6.1 Battery: 6.1.1 Must be securely mounted inside frame rails and covered. 6.1.2 One (1) 12-volt battery only (no 16-volt batteries). 6.1.3 Voltage converters are not allowed. 6.1.4 All battery posts must be securely covered. 6.2 Ignition: 6.2.1 Must utilize OEM distributor and ignition. Stock appearing coils, coil covers and modules only. Multiple spark ignitions are not allowed. All ignition parts must remain out of the reach of driver. 6.2.2 Kill switch required within easy reach of the driver. The switch must be clearly marked “OFF” and “ON”. Crank trigger ignitions are not allowed. 6.2.3 GM must utilize OEM GM distributor. Chrysler and Ford may use aftermarket HEI (bushing type only). Roller bearings are not allowed. Must utilize stock-type components. 6.3 Digital gauges are not allowed. Wiring elements must be accessible for technical inspection.
FUEL SYSTEM 7.1 Fuel: 7.1.1 Automotive gasoline and racing gasoline is allowed. E85 is not allowed. Additives of any kind are not allowed. Penalty for illegal fuel is loss of points, cash and awards earned for that event. 7.1.2 May not be blended with ethers or other oxygenates, and may not be blended with aniline or its derivatives, nitro compounds or other nitro containing compounds. Oxygenated fuel is not allowed. 7.1.3 Upper cylinder lubricants are not allowed. 7.2 Electric fuel pumps are not allowed. Belt driven fuel pumps are not allowed. Pumps must bolt to block in stock location. 7.3 Carburetor: 7.3.1 Must be naturally aspirated. 7.3.2 Fuel injection is not allowed. Aerosol carburetors are not allowed. 7.3.3 Standard Engine must utilize a gauge-legal, unaltered Holley 500 CFM two-barrel (part #4412). HP carburetors are not allowed. Grinding and/or polishing of any kind is not allowed. All carburetor components must be for a Holley 500. Milling and/or grinding of throttle shaft is not allowed, and shaft must stay round. The choke and air horn may be removed (this is the only reworking permitted). Casting line at venturi must be present. Boosters must remain centered in venturi and may not be raised or lowered. Annular discharge boosters are not allowed. 7.3.5 A one (1) inch adapter plate or spacer is permitted. Distance between bottom of carburetor and top of intake manifold cannot exceed one and one-quarter (1.25) inch. Spacer thickness must remain the same front to back and side to side. 7.4 Fuel Cell: 7.4.1 Must be commercially manufactured and must be mounted utilizing at least two (2) steel straps. Straps must be two (2) inches wide at all measuring points. 7.4.2 Must be enclosed in a steel container and must be protected in rear of axle by roll cage tubing mounted securely. 7.4.3 No part may be lower than protective tubing. Protective tubing must be no wider than six (6) inches on both sides. Fuel cell may be no lower than ten (10) inches from the ground. 7.4.4 Must have check valves. A ball-type, flapper or spring or filler rollover valve is mandatory for fuel cells without a positive seal filler neck/cap system. 7.4.5 Limited to a maximum capacity of twenty-two (22) gallons.
TIRES & WHEELS 8.1 Wheels: 8.1.1 Must be fifteen (15) inches in diameter and eight (8) inches in width. 8.1.2 Stickers are not required. 8.1.3 Must be reinforced steel only. Bleeder valves are not allowed. 8.1.4 bead locks are not allowed 8.1.5 Homemade mud caps are not allowed. 8.1.6 Wheel covers are permitted on right side wheels only. Inner mud plugs are permitted. 8.1.7 Wide-five wheel adaptors are not allowed. 8.1.8 Aluminum spacer between hub and wheel is permitted, but overall width of racecar cannot exceed 78 inches. 8.1.9 Added ballast to any wheel is not allowed. 8.2
Tires: 8.2.1 Southwest Speed Spec Tire – 26x8x15 or 8”asphalt pulloffs are allowed must durometer no less than 60 before race 8.2.6 Softening is not allowed. Solvents of any kind are not allowed. Altering tires with any components or chemicals which alter the manufacturer’s baseline-settings of the tire is not allowed. Tires may be ground, sipped or grooved until the end of the 2021 season. 8.2.7 Sidewall markings must remain visible. Buffing or removing compound designations is not allowed. 8.2.9 Added ballast to the inside of any tire is not allowed.
BRAKING SYSTEM 9.2 Caliper and rotor must be standard size and weight. Vented rotors are required on front and rear wheels. 9.3 Right front brake shut-offs are allowed 9.4 Calipers may not be lightened, must be OEM and must be made of steel. 9.5 Rotors must be steel and may not be lightened, scalloped, drilled and/or slotted. Rotors may be redrilled for different bolt patterns or larger studs. No oil bath hubs allowed. 9.6 Front-to-rear brake bias is permitted. 9.7 Brake floaters are not allowed 9.8 Brake lines must be visible. 9.9 Must maintain minimum OEM dimension for hubs, rotors and calipers. ARTICLE 10: DRIVE SHAFT 10.1 A loop is required and must be constructed of at least one-eighth (0.125) inch by two (2) inches solid steel. Loop must be mounted no more than six (6) inches from the front of the drive shaft tube. Alternatively, two (2) loops of one-eighth (0.125) inch by one (1) inch solid steel fastened to cross member are permitted. 10.2 Must be a minimum of two (2) inches in diameter. 10.3 Must be painted white. Aluminum driveshafts are not allowed.
TRANSMISSION Only OEM production Turbo 350 or Power Glide Transmissions allowed. No aftermarket transmissions allowed. No ‘in and out’ boxes or quick change devices allowed. With engine running and car in a still position, must be able to engage car in gear and move forward, then backward. Functioning shift levers must be in OEM location. Transmission fluid coolers allowed. Flexplate and converter must be steel, Minimum 10- inch diameter steel torque converter. No direct drives, couplers, valved pumps, or bleeder style valve bodies. Must have at least one forward gear and reverse gear, gears must function. Must have SFI certified flexplate safety shield. Steel OEM style flexplate only, must be bolted directly to end of crankshaft. Transmission scatter shield mandatory. ARTICLE 12: REAR-END Must use OEM 7.5-inch GM 10 bolt rear end (bracing optional). No Ford or floater rear ends allowed. Steel components only. Rear-end from trialing arm bracket out may be modified with 3-inch axle tubes to accept 9inch Ford axles. When using Ford axles rear-end may be a maximum of 3 inches wider than OEM stock width. Lower trialing arm brackets must remain in OEM location on original 7.5-inch tube housing. Aftermarket axles, mini-spools and C-clip eliminators allowed. Locked rear ends only, no torque dividing differentials allowed. No full or aluminum spools allowed. Pinion angle cannot be changed.
EXHAUST: Must use Schoenfeld Header #161 - 1 5/8” tubes into 3” collector. No other header modifications allowed. No turn downs or additional exhaust pipe allowed.
ENGINE COMPARTMENT: Rear of engine (bellhousing flange) must be mounted at least 70-inches forward from centerline of rear axle. Minimum 11inch engine height from ground to center of crankshaft. One radiator allowed, may be aluminum, 27-inches by 19- inches maximum in size, must be mounted in front of engine, catch can required. High pressure radiator cap and electric fans allowed. No sprinklers. Power steering pump and reservoir must remain one unit and mount in front of engine. Side engine mounts only (OEM or 45-degree style) must be steel, aluminum mid-plate allowed.
ENGINE SPECIFICATIONS: All engines must be able to be used in conventional passenger car without alterations. External engine casting and threaded holes cannot be altered. No aluminum, titanium or carbon fiber components allowed.
BLOCK: Must use OEM steel passenger vehicle production block only. No GM bowtie, Ford or Chryslers allowed. Approved blocks are: GM (Chevy only): 283, 302, 305, 307, 327, 350. Maximum cubic inch limits: GM 364 no tolerance. No 400 or larger cubic inch parts allowed. 4 valve relief pistons only, no gas ported pistons. 3.48-inch maximum GM stroke. Maximum 170 lbs. per cylinder compression, no tolerance. Compression checked with one spark plug removed, turned five engine compression revolutions. Engines may be balanced and block decked. Oil filter system must remain OEM. ‘Wet’ sump oiling system only. No accumulators. OEM stock or OEM replacement steel crankshaft only – cannot be lightened (no aeroing, bullnose, knife edge, undercut or drilling of second or third rod throws allowed. OEM stock or OEM replacement steel rods only - GM must use maximum 5.7-inch rod. No cap screws. No splayed main caps. Racing oil pans allowed. (One-inch inspection hole required.). No obstructions to crank and rods. If obstructions are present, must remove pan for inspection. Engine bolts may be aftermarket. Fluid dampener balancer allowed. No roller bearings allowed.
CYLINDER HEADS: Only GM OEM approved head numbers are (last 3 digits): 126, 185, 336, 441, 445, 487,493, 598, 624, 862, 882, 920, 993, 997, with valve no larger than 1.94-inch intake and 1.50-inch exhaust. Valve sizes cannot be changed. No porting, polishing, or unapproved alterations to cylinder head. No vortec, bowtie, or aftermarket heads allowed. Flat milling allowed, no angle milling allowed. E FORCE Part #10024360 Allowed Guide plates, screw-in shouldered studs (0.375-inch max) and poly locks allowed. No stud girdles. Stamped steel, OEM style, stud mounted (0.375inch max) rocker arms only. Any length push rods allowed. OEM diameter springs (GM – 1.250 inch maximum O.D.) must match heads. No beehive valve springs allowed. INTAKE: Unaltered, OEM cast iron low rise, two- or four-barrel intakes allowed. No aftermarket, OEM hirise, marine or bowtie intakes allowed. All intakes must have unobstructed 0.250-inch vacuum fitting. Belt driven, OEM style water pumps only, no aluminum water pumps on Chevy engines.
CAMSHAFT: Non-roller hydraulic cam/lifters only. Lifters must remain unaltered OEM lifter bores cannot be altered. OEM firing order cannot be changed (GM 1-8-4-3-6-5-7-2). All makes of engines must pull 15- inches of vacuum at 1000 RPM. Vacuum must be pulled on intake vacuum fitting, not carburetor. No alterations of any kind may be made at time of tech. Track equipment being used for tech is final. Lifter bores cannot be altered. Must be chain driven, no gear/belt drives.
** All Non – Crate engines must run a 6000 RPM chip **.
** All Crate Engines must run a 5500 RPM chip**
The rev control box must be located on the deck in plain sight and out of the reach of the driver. All wires from the rev control must be easily accessible by the tech personnel and not be routed anywhere near the driver’s compartment.
WEIGHT 14.1 The overall weight of the racecar shall be measured at the conclusion of an event with the driver in the cockpit, wearing complete racing apparel. 14.2 Overall weight of the racecar must be a minimum of two-thousand four hundred (2,400) pounds. 53% max rear 14.3 Ballast: 14.3.1 May not be mounted in cockpit, or outside of body or hood area. 14.3.2 Must be securely mounted, painted white and clearly marked with the car number. 14.3.3 Must be attached with at least two (2) one-half (0.5) inch bolts. 14.3.4 May not be attached to rear bumper.
SAFETY 15.1 It is recommended that each racecar have built-in fire extinguishing equipment but cannot be of the dry powder type (must be Halon 1211 or equivalent). 15.2 Drivers should have in their pit area as part of their equipment, at all times, a fully charged dry chemical, Halon (or its equivalent) fire extinguisher. Ten- or thirteen-pound fire extinguishers are recommended. 15.3 Driver must wear required helmet, fire suit and five-point safety harness whenever the racecar is on the racetrack. This includes during track packing, warmups, hot laps and races. 15.4 Helmets are mandatory and must be certified , SA2010 or SA2015. 15.5 Helmet must accompany driver and racecar at time of inspection. 15.6 Complete one- or two-piece fire suits of a flame-retardant nature are mandatory. 15.7 Fire-resistant gloves and shoes are mandatory. Fire-resistant socks are recommended. 15.8 The use of a five- six- or seven-point driver restraint system (safety belts, sub-belt and shoulder harness) is required. Factory-type shoulder belts or straps are not allowed. The use of a seven-point driver restraint system is recommended. 15.9 Metal to metal buckles are required on shoulder and seat belts. 15.10 Shoulder harness must be mounted securely to the main roll cage. 15.11 Where the belt passes through the seat edges, a grommet must be installed, rolled and/or padded to prevent cutting of the belt. 15.12 Driver restraint system must be less than three (3) years of age past the date of manufacture. It is recommended that the driver restraint system be no more than two (2) years past the date of manufacture. 15.13 Full-size window net mounted in the left side driver’s window opening is required. Window net mounts must be welded to the roll cage. All bars around the driver must have approved roll bar padding. Approved racing arm restraints are recommended. 15.14 Fire-resistant safety neck collars are mandatory. 15.15 Absolutely no plastic except from edge of firewall to body skin and inner wheel tub to body skin.
We reserve the right to adjust these rules at any time to even the competition!