Rules and Regulations

Car and Safety

Visiting cars with minor rule infractions may be allowed to compete provided the car does not compromise safety or create a hazard.  If the car returns, it must comply with complete class specifications

Driver will adhere to a 5 mph speed limit in the pits or forfeit purse and possible season points.  Second offense can mean being barred from the track.

Car numbers will be on both sides and top of all cars.  Each digit will be 18” tall, 9” wide and 2” body.  Numbers should consist of two (2) numerical digits.  Infractions of number rule shall disqualify anyone from protesting scoring or position change.  Numbers shall be placed on rear and front of car for line up purposes, 3” tall minimum. 

Black or dark colored cars allowed if numbers and letting make car visible.  All numbers should stand out very brightly or track will require you to outline or repaint numbers.  If your numbers cannot be read, you cannot protest scoring. 

Drive shaft shall be painted white and have a loop made of 1/8” X 1” steel at the front of the shaft.

Fire extinguishers mandatory in all classes.   Must be mounted within easy reach of the strapped-in driver.  A quick release bracket is mandatory.  NO TAPE ALLOWED!

Snell 90 approved or better helmet required, quick release 4 point seat belt and harness will be bolted, welded or chained to the frame or roll cage.  No push button release type seat belts allowed.  Drivers suits:  no car in any class will be allowed on the track without the driver wearing a safety approved fire suit, gloves and shoes made of fire resistant material that adequately protects the driver.  Neck brace required.  Window net or arm restraints required.  Functional padded headrest in line with center of driver’s head is a mandatory. 

Tow hooks or loops on both front and rear bumpers required for quick hook up by wreckers.  Type optional but must have tow hooks or loops on front and rear.  Wrecker drivers will not be held responsible for damage to your car if you do not have proper hooks or loops. 

Absolutely no hand brakes.  Foot operated brakes required in good working order.  No hand clutches.  Must have foot clutch if equipped with one.

Toe strap on accelerator pedal required.  All cars will have 2 return springs on throttle linkage.

Battery must be covered with a marine type plastic enclosure or better if in driver’s compartment and well secured.

Fuel cells will be securely mounted and fully shielded from the driver’s compartment.  The fuel cell will be located in a position that will protect it from damage in the event of an accident or upset.  NO stock tanks or thin wall tanks.  Fuel lines will not pass through the driver’s compartment unless fully enclosed in metal conduit and sealed on both ends.

Fiberglass, steel or aluminum racing seats required.

Shock resistant roll bar padding on all bars that driver’s head may come in contact with while strapped in required.  Padding required around arm and leg areas also. 

Functional padded headrest in line with center of driver’s head is mandatory.

No rear view mirrors.  NO radio transceivers or onboard communications.

NO nitrous oxide or nitro-methane allowed in any class.  Fuel must check within 2 points of track fuel.  I.e. If track fuel weighs 790, your fuel must weigh 788 to 792.

Technical Director may require additional bracing, bars, and / or padding be added to any car.

Mufflers are required in all classes.  Track may require additional sound suppression at their discretion, subject to DB meter.  Mufflers required on modifieds.

It is required that the ignition lock switch be removed in all cars and a single kill switch be installed and clearly marked, within easy reach of a strapped in driver and easily reached from the outside of the car.  This must be mounted on the left hand side of the steering wheel on dashboard.

Sharp metal inside and outside of car will be removed.

Nerf bar required from behind rear tire to the corner of bumper (to prevent cars from getting locked together).  May be on inside or outside of body.

3 windshield bars required on all classes.

Breathalyzer may be required at any time on any driver.  1st refusal or testing positive will result in disqualification, loss of points and money for that night, and $250 fine.  2nd refusal or testing positive will result in disqualification, loss of money for night, all points for season and not being allowed to drive any car for the remainder of the season and $500 fine.

Track may require Breathalyzer test at any time, no protest fee required.  Any driver may protest another driver in the same class by posting a $50 protest fee and taking Breathalyzer test first.  If protested driver passes test, he receives money.  If both drivers fail test money goes to the track.

Sprint car, Limited Late Model, IMCA Modified and I-Stock drivers may not drive in the Hobby Stock class.

Drivers driving for points in any class may not drive a Saturday night Pure Stock/Cruiser car but they may ride as passengers.

General Regulations

Each driver is responsible for keeping his or her immediate pit area clean.  Failure to keep immediate pit area clean will result in a fine and/or suspension.               

Drinking of intoxicating beverage by a driver or his/her crew on the racing premises in advance of, or while competing in any program is strictly forbidden. Any persons who show evidence of having partaken of alcoholic beverage will be required to leave the premises immediately and may be subject to a fine of not less than $250. Use of illegal drugs at any time shall be cause for immediate, indefinite suspension and/or fine of not less than $250.

No driver or crew member may enter the racing area until he/she has signed all releases, registrations and/or entry forms.

In presenting themselves in the pits, everyone must be aware of their responsibility to the sport for their dress and actions.

No person will be allowed to sign the release and waiver sheets for anyone other than them self.  Violation is a minimum $25 fine.

No competitors will be allowed to participate in events until they have registered their car with Abilene Speedway and made application for I.M.C.A. license if competing in an IMCA Sanctioned class.

No driver changes will be made at any time without previous notification of officials.  All changes must be made in the pits only, at the discretion of officials.

The driver is qualified and receives points, not the car.  Any driver wishing to change cars must be qualified to compete in the race for which he/she is changing cars, and must start that race at the rear of the field.  Once a driver has changed to another car, he/she must finish the program in that car.

The driver shall be the person responsible for the actions of the entire pit crew.

The driver shall be the sole spokesman for car owner and pit crew in any and all matters pertaining to the race and the driver only shall take part in any arbitration with the officials in charge.

No person shall subject any official to abuse or improper language at any time.

No driver, car owner, or mechanic shall have claim for damages, expenses or otherwise against promoter, track owner, Abilene Speedway or any of its officials, by reason of disqualification or damage to either car or driver or both; and car owner, driver and mechanics agree that the track is in safe condition if they take part in racing activities.

Abilene Speedway and track owner-promoter reserve the right to subject any car to an inspection at any time.  They further reserve the right to disqualify any member from competition or any car from competition.

It shall be the responsibility of the driver and crew to tear down a car for inspection when requested to do so by officials.  Failure to comply will result in disqualification and forfeiture of prize money and points.

Any car taken from the racing premises without first clearing with the official in charge will subject car and driver to disqualification and forfeiture of prize money and points.

No participant will take part or participate in any action or activity considered detrimental to Abilene Speedway racing.

No participant shall participate in fights in the pits or on the racing premises at any time.

Participants agree to abide by the official decisions.

Abilene Speedway reserves the right to have all cars use the same fuel or fuel mix.

All drivers, car owners and mechanics assume full responsibility for any and all injuries sustained including death and property damage, at any time they are on the racing premises, en route thereto or therefrom.

All disputes developing as a result of local track rules must be settled at the track.

IMPORTANT: Abilene Speedway participants are not employees of Abilene Speedway but are independent contractors and assume all responsibility for all charges, premiums and taxes, if any, payable on any funds they may receive as a result of their participation in any events as drivers from Abilene Speedway.

Four wheelers, golf carts, and other pit vehicles may not be operated by anyone under 16 years of age.  Proof of liability insurance will be required before any four wheelers, golf carts, or other pit vehicles may be operated on Abilene Speedway premises.  Maximum 5 MPH speed limit for all vehicles in Abilene Speedway pits. 

Every driver is responsible for his starting position in each race.  Pit steward will not individually notify drivers.  Your line up will be posted.  It is your responsibility to be in the staging area lined up.  Races will be run promptly.  Get lined up or you will miss your race.

Abilene Speedway reserves the right to use photographs of any car or driver for promotional consideration or concession.

Anyone carrying lug wrenches, jack handles or club like objects who are not in the immediate are of their car are subject to permanent barring.  In the event of disputes, anyone who is not in their car’s pit area will be considered at fault regardless.  Stay in your pit area!

A race program is held incomplete unless all scheduled heat races have been completed.  In the even of a rain out, no refunds will be given.  Tickets will be good for next scheduled race.  If you cannot attend next scheduled race, mail ticket stub for rain out to Abilene Speedway, 4450 Ridgemont Dr., Apt# 412, Abilene, TX  79606.  Tickets will be exchanged for pass good for any night during the season.  Tickets must be received by Thursday following rain out to receive exchange. 

All events not completed will be scheduled for the next race meet and will precede the regular show with qualified cars only.  Those races will be restarted as they were lined up on the completion of the last green flag prior to the red flag display.

Driver will not unstrap and get out of the car during races on track unless there is a fire, major red flag, medical emergency, or unless the car is unable to continue the race.  If driver gets out of his car on the racetrack during any other condition, he will be black flagged for that race. 

Any driver, owner, pit crew person or family relation of any car who delays any race or race activity may bring disqualification for that car and crew. 

Pit meeting starts 1 hour before races start and all drivers are required to attend.  All cars not at track and signed in by this time will start heat race from rear. Questionable weather days with a threat of rain out, out-of-town cars may call and have until 30 minutes before race start.  This is for bad weather days only.

Mud laps are responsibility of each driver and car.  Mud laps start at the call of the pit steward and are over when your car is motioned off the track by the official.  Failure to mud lap or insufficient number of laps mean you start at the rear of your heat for that night.  Everyone in class must stay on track until they are waived off the track.  If you have a problem, pull to the top of turn 1 & 2.  The better the mud laps, the better the races.  Do your share or you will start at the back.  If we have a reoccurring problem with someone not mud lapping, they will start all races from the rear.

If track is packed in and ready hot laps will be allowed prior to races.  Hot laps are by class, in the order that races are run.  If the track is not packed in, there will be no hot laps. 

If a driver is barred for bad conduct, his car is also barred for the same period of time. 

Restricted Areas- Insurance does not permit participants in restricted areas.  Stay behind secondary fences or you will get your car black-flagged.  Do not go to back flagman in turn 3.  Do not go to flagman or wreckers in turn 2.  Do not go by fire truck on back straightway. 

Participants and spectators:  As of 12:15 a.m. Saturday (Friday night race), and 1:15 a.m. Sunday (Saturday night race), you may be ticketed and fined by the TABC for possession of (opened) alcoholic beverages.

Protest, Points, & Pay

Pay off will be made as soon as possible after the race event and no later than 30 minutes after the final race of the day.  Purse will be released to the driver only unless specifically requested on the entry form.  Those wishing to have the purse mailed to them should indicate so and give a complete address.  Must show pay card to receive pay.

Track may check anything on car at any time at no expense to the track or management.

Protest must be made immediately after race by stopping at Tech area and giving to Tech personel protest money and written protest request stating car protested & item (s) protested.  I.e. I protest car #___ for visual protest of ________ signed________.  You must finish the race to protest.

If any car is found illegal of a minor rule infraction (such as failure to meet weight rule), all points and money from that night are forfeited.  Major violations, (such as illegal motor), will result in loss of purse, points for that night plus a $500 fine.  Refusal of a protest is the same as being found illegal.  A $500.00 fine for any car illegal and proof of rule compliance is required before racing again.

ANY car found illegal during the heat race may change the illegal part, and after track inspection for clearance, race from the scratch position if qualified.

Protest fees are as follows:



For intake and choice of 1 head



For carburetor



For visual



For headers



For intake, choice of 1 head, remove oil pan and remove I piston and rod.


While the track will check cars for various rule violations each night, you have the right to protest any car you think is illegal.  If you think someone is illegal, put your money up and find out.  If you will not protest someone, you do not have the right to complain and say someone is illegal.  The protest is your way to catch something the track officials miss.  Protest fee must be in cash and by a driver form the same class as the car protested.  Solicitation for contributions for protest fee is prohibited. 

Only the driver protesting, representative of his choice, driver protest, owner of car protested, track officials, and tech committee allowed at the protest.  Fee awarded to correct party.

Pay and point records must be retained in order to question pay or point standings.

No admittance to press scoring box under any circumstances.  Violations can result in being barred from the track.

*IMCA sanctioned classes use IMCA procedures.*

All protests shall be in writing and must be filed with the tech personel immediately after the feature race is completed. Such protests must be specific in charges and alleged violations so that determination can be made whether they are allowable or rejected. No protest of any type will be allowed after prize money has been paid.

Protests which involve alteration of scorer's results, engine tear downs, etc., will be handled at the track level and must be accompanied with an appropriate cash protest deposit. If the protest is not sustained by track officials, the protest deposit will be forfeited and the money given to the person protested.   If the protest is allowed the money will be refunded to the protester. 

Any situation not covered by these rules shall be referred to the Abilene Speedway Executive Committee for decision. These protests must be in written form and accompanied by a $100 protest deposit. If protest is allowed, deposit will be refunded. If protest is not allowed, deposit will be forfeited.

All costs and expenses incurred during a protest shall be assessed against the party against whom the decision is rendered.

Any driver who is under temporary suspension may not participate in any Abilene Speedway event while under such suspension. No car under temporary suspension may compete while such suspension is in force.

Automatic penalties as follows:

(a)  Rowdyism, fighting or demonstrating; 1st violation, minimum $100 fine. Second - 1 year suspension.   (b) Foul driving; First violation - disqualification from day's racing and forfeiture of prize money, points, and/or suspension.  Second violation - fine and/or suspension.   (c)  Repeated violations of Abilene Speedway rules. Permanent suspension.   (d)  Assault of an Abilene Speedway track official, track owner-promoter. First violation - fine of no less than $1,000 and/or suspension of driver of no less than 21 days.

IMCA classes may receive additional penalties from IMCA.


The number of cars starting a race shall be determined by the track officials and shall be determined by the type of the event and condition of the track.

Each registered car will carry an identification number as assigned by track personnel. It shall be sufficient in size so as to be readily identified by officials and spectators. It shall be positioned on both sides, the top and the back of the automobile, also the front. The number must be of a contrasting color to the general paint scheme of the car so that it is readable under all conditions of light and speed.

The track owner-promoter and the officials will not be responsible for allowing a late entry to compete.

Any driver not ready to compete when called will be sent to the rear of the starting line-up.

Once a race is started on a preliminary line-up lap, relines will be single file

A race may be stopped at the discretion of starters or other officials at any time they consider it dangerous to continue, but only an official has the right to stop a race and no driver, car owner, pit man or mechanic may use the starter's flags for the purpose of signaling the competitors.

No race is official until the officials make the declaration of final scoring of positions in all events.

No car is to receive assistance after the white flag is displayed and all finishes must be made under the car's own power or momentum.

A dead heat may or may not be re-run at the discretion of the referee. If the dead heat is not re-run the prize money and points for both positions under contention shall be divided equally by participants.

No person shall be allowed on the track during a race except the starter and race officials.


All Classes - Weekly "A" Feature win is 40 points, with each subsequent position worth one point less. This makes the 24th spot in the feature worth 17 points. Should any track start more than 24 cars in the feature, all positions from 24th on back receive 17 points. When a track runs a "B" feature(s), the first non-transferring driver receives 16 points and each subsequent position, back to sixth spot, receives one less point per position. Sixth and each position on back in the "B" feature(s) receives 11 points. This applies to all "B" features if more than one are run per night. Any driver not qualifying for an "A" or "B" feature receives five show-up points.

Should a driver qualify for a "B" feature or the "A" feature, and not be able to make the field due to mechanical or other difficulties, driver will be scored in last position of the race qualified for, and receive points accordingly. (It is up to the track whether his vacated position will be filled in the feature by the next qualified driver.)

If there are less than ten entries, for each car less, one point fewer than normal is awarded for feature finish ( i.e.; nine cars, 39 points for win; eight cars, 38 points, etc.).


First night, all drivers draw for heats. Qualifiers redraw for starting positions. One heat - 5 redraw; two or five heats - 10 redraw; three, four or six heats - 12 redraw.

From second night on, heat races are lined up by season point average, stagger inverted, lowest point average to front, highest point average to rear. New drivers carrying no point average start on the tail. Point averages are figured from I.M.C.A. point system. Average is figured by driver's track point total divided by the number of times he/she has competed at track.

"B" mains are lined up straight up from the heats with the highest finishing non-qualifiers to the front.

When one heat race is run, top five qualifiers will be inverted for feature lineup according to season point average. When two or five heat races are run, the top 10 qualifiers will be inverted for feature lineup according to season point average. When three, four or six heats are run, the top 12 qualifiers will be inverted for feature according to season point average. Remainder of "A" feature is lined up straight up from heats and/or "B" features.

A driver that qualifies but does not have a point average shall be lined up in the last invert position.

If a driver is absent for two consecutive events (excluding rain-outs), upon his/her return shall be treated as a new car (rule #5) for the first week he/she returns.

There are no double feature nights allowed, excluding rain-out make-up features. A program is not considered a rain-out unless qualifying races have been completed.

For each car less than 10 entries for that event, one point fewer than normal shall be awarded for feature finish. (Example - nine cars, 39 points to win; eight cars, 38 points to win, etc.)

Track option to line up mid-season and season championships straight up by total points.

Jr. Mini Stock Rules

DRIVER REQUIREMENTS:  Age minimum has been raised to 13 years of age due to insurance demands.  Maximum age level is 15 years.  Drivers must be  able to operate all safety equipment and be able to start car, shift gears and complete test for officials.   Prior to  racing, a mandatory orientation must be attended by driver and parents.  Notarized release forms  must be completed before being allowed to race.  (NOTE: If a driver begins a racing season at 15 years and turns 16 years during the season, they will be allowed to finish the season.)

NOTICE:  All components are subject to inspection and approval of Track Officials.  No equipment will be considered as having been approved by reason of having passed through inspection unobserved.  IF IT DOESN’T SAY YOU CAN…DON’T!!

a.  Two or four door sedan body with steel top.  Station wagons are o.k.  Production
wheelbase limited to 102".  (4/13/13 upd. MAXIMUM 102").  No modifications to wheelbase.  No front wheel drive.
b. Cars must have complete frame. Cutting allowed over rear axle to mount rear shocks but must be reinforced.
c. Cars must have complete firewall separating driver from engine and also separating trunk area from driver's compartment.
d. All glass, chrome, and trim must be removed.
e. All flammable materials must be removed.
f. Fenders may be cut for tire clearance but must maintain a stock configuration.
g. All cars must have a minimum of two (2) hood pins or bolts to keep hood closed.
h. Back of hoods must be completely sealed off and must stay that way while car is in motion.
i. No angle or channel iron outside of car.
j. Plastic nosepieces and tailpieces are allowed. Sheet metal or plastic skirting is o.k.
k. No aluminum bodies! No Mini Mods or Dwarf car type bodies.  Must be OEM production body.
l. Removable inspection panel required on driver dash area.
l. Minimum weight after race with driver is 2300 lbs. (will be checked at tracks with scales).
m. Should be painted and lettered in good taste

a.  All cars must have a minimum six (6) point roll cage. All cages should be at least 1-1/4" outside diameter x .095 wall steel tubing. ( no welded corners ) Roll cage around driver must have padding.
b. Drivers head must be at least 2" below top of cage.
c. All cars must have at least three (3) door bars on driver side, two (2) bars on grandstand side. Door bars must be a minimum 1-1/4" x .095 wall steel tubing. Door bars must be sufficiently gusseted and tied to the car at the bottom.
d. Any bracing inside of car is legal except under the fenders.
e. Seat must be mounted to the roll cage and be on the left side of the car.
f. No tube frame car
g. Minimum 3 front window bars in front of driver.

a. Front bumpers must be centered on frame rails and in its original location.
b. Front bumpers may be 1-1/2" o.d., no more than 8" overall in height from top to bottom.
c. Front bumpers must not extend more than 2" in front of any body part and be no wider than center of tire. Ends must bend back into the frame and be welded. No blunt or sharp edges and no channel iron.
d. May have two (2) radiator protection bars in front of radiator and behind bumper within the confines of body.
e. Rear bumper may wrap around rear quarter panel and must tie into frame behind rear tire.
f. Rear bumper may be 1-1/2" o.d. pipe or tubing no taller than 12".
g. Stock bumpers are allowed.

a. Nerf bars must be flush with body. No blunt or sharp edges.
b. Nerf bars must be 1" x 2" rectangle or 1" square only.
c. Nerf bars are only allowed between wheels.

a. In line four cylinder (carburetor type only) with a maximum displacement of 2399cc. Only exclusion is Chevy. Call for info.
b. Engine must be in stock location.
c. No rotary engines or turbos.
d. No dual overhead cams.
e. Engine must use stock block, and head. Steel valves only.
f. Must use stock intake.  May be machined to receive carburetor only.
g. Milling of head to increase compression allowed. No porting, polishing or port matching allowed. NO GRINDING INSIDE OF PORTS. Straight boring allowed for large valves.  Cannot go past short side radius. Bore cannot be polished.
h. Carburetor must be un-altered Holley #4412 or 5200 series with a stock venture bore, stock throttle body, and stock booster location.  May run stock OEM carburetor not to exceed 500    cfm.  No Weber or Mikuni carburetors.
i. Battery type ignition only. No magnetos, dual points, MSD boxes.
j. Any solid surface cam, valve springs, rockers, and lifters are allowed. NO ROLLER CAM/Rockers. Adjustable Cam gears ok
k. Stock exhaust or racing headers are allowed. Mufflers may be required depending on track rule.
l.  Exhaust should exit under car.
m. Engine Blocks and Heads must have factory numbers.
n. No Strokers. 5-7 Rods allowed
o. Must have stock O.E.M. UNALTERED crankshaft. (example; 2.3 Ford - 2.3 Crank, unaltered)
p. 1" Sight plug in the side of the oil pan with a clear line of sight to the crankshaft and rods.
q. Starter - Must be able to start under own power. 

r. If electric fuel pump is used, an automatic oil pressure cut off switch is required.

a. Standard or automatic transmissions are allowed. Automatic transmissions must use OEM torque converter.
b. Transmissions must have at least two (2) forward gears and one (1) reverse.
c. Rear end must be locked.
d. Drive shafts may be altered or welded and should be painted white.
e. No dog clutches or multi-disc clutches. No couplers. No Mini clutch. Clutch MUST match make of car!
f. No Aluminum flywheels allowed, MUST USE STEEL FLYWHEEL.

a. Front and rear suspension must be stock type, but may be re-enforced. No welding springs solid. No wooden blocks in springs. No type of adjustable front suspension parts.
b. One shock per wheel.
c. No weight jacks allowed. If weight jacks exist they must be disabled.
d. Added weight must be secured
e. No adjustable shackles on rear

a.  8" max steel wheels only. Rim centers must be completely welded and may be reinforced.
b. Racing studs and lug nuts are recommended
c. D.O.T. Street tires ONLY - NO RACING TIRES
d. No bead locks
e. No grooving of tires.
f. Right rear mud plug allowed
g. No bleeder valves

a. Only one (1) radiator is allowed and must be centered in front of car.

a.  One (1) 12 volt automotive battery allowed per car.
b. The battery must be mounted to frame or cage.

a. Racing Gas allowed. No additives.
b. Racing fuel cell is required.
c. Fuel cell must be mounted to frame, or bolted to cell frame.
d. Fuel cell must be vented and have Flapper Valve, if no fire suppression system on board.
e. Fuel cell should be 12" from either side of car and 12" from the rear of the car body.
f. Floor in trunk must have holes drilled in it to allow spilled fuel to drain.

a. All cars must have a minimum of three (3) working rear brakes. Four wheel brakes are recommended.
b. Adjustable brake control cannot be in driver reach.

a. Snell-rated SA95, SA2000 or SA2005 helmet required. Roll bar padding
required in driver compartment (Fire retardant recommended). SFI-approved
full fire suit required. Fire retardant neck brace, gloves and shoes required.
Recommended: Fire retardant head sock and underwear; head and neck
restraints. Driver-side window net required.  Minimum 16"x 20" ribbon or mesh
style, and must be mounted so latch is at top front of window. Minimum
three-inch wide five point safety belt assembly required (Y-type shoulder harness
not allowed), must be mounted securely to roll cage, and recommended to be
no more than one year old. Kill switch required within easy reach of driver
and must be clearly marked 'OFF' and 'ON'.

Street Stock Rules


1. Must be 1965 or newer, 107.5 minimum wheelbase, 2 or 4 door sedan. No convertibles, station wagons or sports cars.

2. All glass must be removed, any flammable interior parts must be removed, all light assemblies, trim, door handles, etc… and all chrome except bumpers must be removed.

3. Full factory floor pan or equivalent including rear fender wells must be retained. Full factory front firewall or equivalent must be retained. Front fender wells may be removed. Fenders and quarter-panels may be trimmed as needed for tire clearance. Exterior body panels are to be OEM or may be fabricated using sheet metal, but must maintain OEM body lines and contours. No slab sided Late Model type bodies allowed. 

4. Doors must be welded or bolted shut, gutting of all interior panels including trunk floor allowed. Metal firewall between driver and fuel-cell required for safety. 

5. Front and rear bumpers may be an OEM type or fabricated using pipe or tubing no larger than 2" OD and with a wall thickness no greater than .125".  Fabricated front and rear bumper heights not to exceed 10".  Bumpers must have ends capped, plated, turned-in or otherwise prepared in some fashion to prevent the hooking of other cars. 

6. Aftermarket nose and tail pieces allowed. 

Roll cage and bracing

1. 4 post roll cage must be securely welded directly to factory frame on fully framed cars.  Uni-body cars only. Cage must be welded to minimum 6" by 6" 1/4" thick plates that are securely welded to body strong-points. Sub-frames may be tied together. Three driver’s side door bars and 2 passenger side door bars minimum.

2. Roll cage and door bars must be constructed using at least 1 ½" OD pipe or tubing with a minimum .125" wall thickness. 1 ¾ OD .95" wall OK too. Door bars must be tied together top to bottom in at least 2 places.

3. Full front and rear loops with associated bracing allowed.

4. Nerf bars allowed.  Can be round, rectangular or Lexan.  Also, must be within 1/2" of body and ends must be either capped or tapered or turned into body. 

5. Plating of frame allowed only on hump over rear axle or for repairs. Track tech will make final decision about what constitutes a repair.  Rear frame rails may be replaced with square or round tubing to a point no further forward than behind rear axle where hump over rear axle begins. 


1. GM and Ford 360 CID maximum allowed. Mopar 365 maximum allowed. No bore and stroke combinations not offered by OE manufacturer allowed. Blocks must be cast iron OEM.

2. Engine and frame must be same manufacturer; GM in GM etc.

3: Domed or pop-up pistons of any kind not allowed.

4. Stock crankshafts and steel stock appearing only. No dry sump or external oil pumps allowed.  OEM or OEM appearing replacement  cast steel rods only.  GM must use 5.7 only.

5. Hydraulic flat tappet cams only. No solid lift cams allowed.  Lifter must compress.

6. Intake unaltered approved OEM low rise, Aluminum intake Edelbrock 2701 IMCA.

7. Cylinder heads must be cast iron pre-vortec OEM. Again, no vortec or aftermarket heads allowed. No porting or angle-milling allowed. No full roller rocker arms and/or stud girdles allowed. Screw-in studs, guide plates, roller tip rocker arms and polylocks OK.

8. OEM distributer only, aftermarket coil and module OK. No MSD boxes or other aftermarket ignition parts not listed above allowed.

9. One 2 or 4 barrel carburetor that bolts directly to unmodified OEM intake or unmodified OEM spacer with a maximum of .250" total gasket thicknesses. No aftermarket carb spacers or adapters allowed except with the use of a Holley list#4412 500 CFM 2 barrel. Choke hardware may be removed, but choke horn must remain unmodified. No airflow work allowed on any carburetor. No dual line and/or double pumper, Predator, Demon or any other type of all out race carburetor allowed.

10. Only 1 radiator allowed; can be stock or racing and must be placed vertically in front of engine.  Aftermarket reduction pulleys OK.

11. Engine can be set back but #1 spark plug can be no further back than even with upper ball joint.

12. Exhaust may be cast iron manifolds or chassis style headers only. 


1. OEM automatic or standard only.

2. Automatics must run fully functional torque converter no less than 10" in diameter.

3. Standards must run OEM fully iron flywheel, clutch, and pressure plate with friction face no less than 10" in diameter.

Rear ends

1. Passenger car or light truck rear ends allowed. Rear ends may be locked by welding or other means.

2. Floaters OK.  (safety)

Suspension and brakes

1. All front and rear suspension components including mounts must remain absolutely stock, unmodified and in their original locations. Racing springs OK. Load bolts and weight jacks not allowed. (Tubular upper control arms OK).  Rear trailing arm holes, Max 2 1/2" from Rearend.  No adjustable spring buckets.

2. Racing shocks OK, but must mount with stock type hardware and in stock location.  No ball-end shocks.

3. Steering box and/or idler arm cannot be moved. Steering may be quickened by aftermarket steering quickener or other means.

4. Brakes must be functional on at least 3 wheels (4 wheels recommended).  Aftermarket peddle and master cylinder allowed, but no driver adjustable bias controls allowed.

Wheels and tires

1. Steel wheels only not to exceed 8" in width, may be reinforced and/or reversed, but must maintain no less than 2" backspacing. Wheels must be retained by no less than 5ea. 1" lug nuts. Racing studs and lugs recommended. 4 lug hubs and wheels OK for cars so equipped from factory but MUST be equipped with both racing studs and lugs. Bead locks allowed on right side only.

2. Tires are to be 60 or 70 series DOT stamped street tread steel belted radials only. Tires must be available at local retailers. No special, knobby, snow, recaps, AT or racing tires allowed except for any tire stamped or marketed as an IMCA G60 Hoosier or IMCA Hoosier 500. 

3. Grooving not permitted. Grinding glaze off tread OK.

Fuel and fuel system

1. Gasoline only.

2. No electric fuel pumps.

3. Racing fuel cell only, must be securely mounted in trunk area to rear bracing and cannot be visible from outside of car. Any fuel line ran through passenger compartment must be contained within rigid conduit.


1. Battery must be in plastic box securely mounted to floor pan or in trunk area.

2. Battery must be capable of starting car and car must be able to idle in neutral and move forward and backward from a standing position with engine running.


1. Minimum weight after completion of feature event with driver, 3100 lbs.

Seat and safety

1. Metal racing seat only, must be securely mounted to roll cage and/or frame using a minimum of 4ea. 3/8’ grade 5 or better bolts and nuts.

2. 5 point racing harness required and to be secured with minimum 3/8" grade 5 or better bolts and nuts.

3. Properly mounted window net or arm restraints must be used.

4. Driver must be equipped with an approved helmet, neck brace, gloves and wear driver’s suit that effectively covers driver’s body.

5. Steering wheel must be equipped with quick release.

6. Drive shaft loop must be installed no more than 6" rearward of front U-joint.

7. If fuel cell does not have aircraft style positive seal filler neck/cap system , a flapper, spring or ball type filler rollover valve is required.  No D-ring caps allowed.


Demolition Derby Rules & Regulations


1. Any American made car, or station wagon is allowed, EXCEPT CHRYSLER IMPERIALS.

2. All glass, molding and flammable materials must be removed.

3. Original gas tank must be removed.

4. No trailer hitches or frame bracing is allowed.

5. No reinforcements!! This means no additional metal added to the car anywhere except for the door, hood and trunk seams.

6. No tires larger than 15". Solid tires or multi-ply tires are OK. No flats make for a better show.

7. Valve stem protectors are allowed.

8. Flat tires on a paved track are cause for disqualification.

9. May remove fan. No electric fans allowed.

10. Rear end may be locked.

11. May move battery, but if inside must be covered.

12. Air shocks are OK.

13. Transmission coolers are allowed but if inside they must be covered.

14. Fire extinguishers are required.

15. You must have some working brakes.

16. Driver’s seat may be braced.

17. Fenders may be trimmed and motors chained.

18. Bumpers may be welded to frame.

19. Bumpers must be wired or chained to frame or body (not both), to stop you from running over them

20. All doors, hood and trunks must be wired, chained or welded shut. If any door on your car comes open you will

be disqualified.

21. You must have a 10" inspection hole in hood and trunk.

22. Suspension – Front and rear suspension must remain stock.

23. All floorboard plugs must be removed.

24. A car may have the engine, rear-end, and transmission swapped, ie. Chevrolet in Chrysler, Chrysler in Ford, etc.

25. Alteration of a drive shaft is allowed.

26. NO truck rear-ends allowed.

27. Alteration of a steering column is allowed to prevent loss of steering.

28. Frame may be re-welded on factory seams only. Factory holes in frame may not be welded or covered up.

29. Radiators must remain in stock position.

30. Any gas line or tranny line that is inside the car must be of metal tubing.

31. Any car having its stock bumper replaced will be replaced with an automobile bumper only.

32. No raising or lowering of vehicles. Cars must remain in stock position and must be within a few inches of factory specs.

33. Only stock car springs allowed.

34. Center of steering wheels must be padded; drivers door padding is recommended.

35. No passenger allowed in car. NO EXCEPTIONS.

36. Transmission burp tube is required.

37. Cars must be numbered on both sides and roof at least 16" tall. Numbers must be legible.


38. Please keep all sponsorships, signage and decals on vehicles clean. No vulgarity allowed. This is a family sport.


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, and by participating in these events, all participants are deemed to have complied with these rules.   NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM PUBLICATIONS OF OR COMPLIANCE WITH THESE RULES AND/OR REGULATIONS.   They are intended as a guide for the conduct of the sport and are in no way a guarantee against injury or death to a participant, spectator or official.   The race director shall be empowered to permit reasonable and appropriate deviation from any of the specifications herein or impose any further restrictions that in his 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 of these rules is left to the discretion of the officials.   Their decision is final.

The Management of Abilene Speedway

6825 W. HWY 80 Abilene, TX • Track Phone: (325) 692-8800 • Other Phone: (325) 725-3849 •

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