Westhold System Transpoders are required in every division. There is a rental fee of $5 per night.

Drivers must be at least 16 years of age unless pre-approved by Attica Raceway Park Management (identification will be required).

ALL drivers competing at Attica Raceway Park are required to utilize one-way radios for communication between track officials and racers

Race drivers will be allowed to compete in more than one division on race nights. However, the driver must be ready to race and cannot hold up the show.


Pill draw for hot lap and qualifying order. Qualifying determines only heat race line ups.

Hot lap and qualify at the same time. (3) hot laps / qualifying laps

Groups will be split up equally into heat races (depending on number of cars).

Qualify against only the cars in your heat race group (2 -4 cars on track at one time).

2 Heat Format (up to 17 Cars)

Invert 4, top 2 finishers in each heat plus the fastest qualifier in each heat that finishes

in the top 4 of each heat redraw (6 cars) for the first 6 starting positions in the A Main. Remaining cars will be lined up by heat race finish

3 Heat Race Format (up to 27 Cars)

 Invert 4, top 5 transfer, top 2 finishers in each heat plus the fastest overall qualifier from the first half of the pill draw sheet and the         fastest overall qualifier from the second half of the pill draw sheet that transfers but did not finish in the top 2 redraw (8 cars) for first 8 starting positions in A Main. Remaining 3rd, 4th  and 5th place finishers would line up starting

9th – 15th  in the A Main. 16-20 (Top 5 transfers from B Main the way they finish in B Main). If a B Main is not run the fastest overall qualifiers must finish in the top 5 of a heat race to be eligible for redraw.

4 Heat Race Format (28-36 Cars)

Invert 4, top 4 transfer, top 2 finishers in each heat plus the fastest overall qualifier in the 1st and 2nd heats that transferred but did not finish in the top 2, and the fastest overall qualifier in 3rd and 4th heats that transferred but did not finish in the top 2 will redraw (10 cars) for the first 10 starting positions in the A Main. 17-20 (Top 4 transfers from B Main the way they finish in B Main). If (2) B Mains are run the top (2) finishers in each B Main will make the A Main.

410 Sprints

The rules for the 410 Sprints at both Attica Raceway Park and Fremont Speedway will follow those established by the All Star Circuit of Champions and World of Outlaws.

1,425 pound minimum weight (with driver) – Top 3 in A-Main must go to scales

Failure to report to scales or meet minimum weight will result in disqualification.

Mufflers Required. Muffler rule will implement the Schoenfeld 14272735-78 for all events.

Tethers and kingpins not required for weekly events.

View All Star Sprints Rules

View World of Outlaw Sprints Rules

Late Models

With the UMP Dirtcar sanction, drivers competing at Attica will be eligible to race for UMP national, regional and state points, as well as prize money. The dirt late model rules for 2020 will apply under UMP DIRTcar guidelines with the following exceptions:

Cars will be on a 2,350 pound weight rule (with driver) – Top 3 in A-Main must go to scales

Failure to report to scales or meet minimum weight will result in disqualification.

Teams are required to run Hoosier LM 20, 30 or 40 compounds on all four corners

View UMP DIRTcar Super Late Model Rules

305 Sprints

Along with the 16-inch medium Hoosier, the H15, H20, and the W18 will be allowed for use.

Mufflers Required. Options include the existing Schoenfeld #112535 or the new #14272735-78 muffler in 2013 or the Flowmaster 14-inch #53545-10.

The following specifications have been prepared by Fremont Speedway and Attica Raceway Park as guidelines for the construction of the 305-Sprint Division. No warranty of safety is expressed or implied as a result of this publication of rules. These rules are intended as guide and are in no way guarantee against injury or death to participants, spectators, or others. Anything not covered by these specifications should be approved by the track officials and placed in writing. Continuous developments in auto racing and technology may mandate changes in these specifications. However, it is our intent to enforce and police these rules throughout the season. If a change is necessary, technical bulletins will be prepared and distributed in advance.

This division was developed for the fun of racing in a low cost fashion. This requires limits in various areas to keep competition equal and fair for all participants. In order to accomplish this, if it doesn’t say you can – don’t! With the help and consideration of the participants, this can be accomplished. Try to live within the spirit of the rules. If you have questions, please contact track officials before you are found illegal for competition.

Weight Rule


• Starting in 2019 – 1,500 pounds including the driver. Top 3 in A-Main must go to scales

Failure to report to scales or meet minimum weight will result in disqualification.

• The only titanium that is allowed is the in the rear end.

• Track officials have the final say in determining the eligibility of each participant.



1. All engines must be GM 305cid V8s. RaceSaver engines are also legal. The block must be stock production type with maximum 3.805 inch maximum bore (316 cid maximum). Dart and Bowtie Blocks will be allowed using the same maximum bore of 3.805 inch. Engine must have all casting numbers for identification purposes. The block must be completely stock appearing (no grinding) on the outside. All engines must have flat-top pistons. I or H beam style rods can be used. Polishing of the sides of the rod I-beam permitted. Pistons may not protrude out of the block. Crankshafts may be stock GM 305 cast iron shaft with 3.480 inch maximum stroke or the Callies compstar crank and this can also be used as it comes out of the box no lightning other than to balance.

2. Cylinder heads must be Brodix Spec or All-Pro Aluminum

Brodix spec head requirements are: P/N: SP ST (bare) or SP ST PKG (complete).

Both P/N’s are the same casting (casting marks and stampings). Head must remain as cast. No porting or polishing of any kind in the intake or exhaust ports, under or behind the valves. No port matching. Do not disturb the combustion chamber. Brodix stamps must be seen. Must pass a 11:1 compression ratio this will be checked with a whistler.

ALL PRO spec head requirements are: To be 305 spec ALL PRO Head must be remain as cast. The same rules apply as those of the Brodix head. All Pro head will have marks in the ports similar to the Brodix. These heads must also pass the whistler at 11:1 ratio.

3. Valve springs must be straight and stock diameter of 1.26 inches. Stud mounted roller rocker allowed. No shaft mounted systems. No stud girdles. No rev kits. Screw in studs and push rod guides plates allowed.

4. Any ignition may be used.

5. Only stock diameter (0.842 inch) Flat tappet or Hydraulic lifters may be used NO ROLLERS OF ANY KIND

6. The oil system must be a wet sump system. No dry sump systems will be allowed.

7. Maximum fuel injection size permitted is 2 3/16 with all fuel lines in the manifold. No down nozzles allowed. Only one nozzle per cylinder. No carburetors or carburetor-style injections allowed. Stacks must be removable for technical inspection.

Track Officials will have the right to check engines at any time and will have the final say in determining the eligibility of any engine. Any illegal engine parts will confiscated until end of season.

Fuel and Fuel Pumps


1. Only straight alcohol (methanol) allowed. No gasoline, nitro, or nitrous systems. An approved fuel bladder is mandatory. Fuel system infractions mandate immediate disqualification.

2. No electric fuel pumps.

Wheels and Tires


1. All wheels may be steel or Aluminum.

2. Any steel wheel is permitted with the approval of Track Officials.

3. All right-rear wheels must have a bead-lock system with a tubeless tire. These are subject to approval.

4. Bleeders are allowed

5. Along with the 16-inch medium Hoosier, the H15, H20, and the W18 will be allowed for use.

6. All tires must be available to everyone.



1. All brakes must be in good working order at all times.

2. Failure upon inspection mandate disqualification.

3. No carbon fiber parts will be allowed.



1. A top wing is mandatory. The wings must be a minimum of 15 sq. ft and a maximum size of 25 sq. ft. (Note, the 25 sq. ft. maximum size is consistent with both the “All Stars” and “World of Outlaws”.) Dished or Flat wings allowed

Dished wing no wicker bill, flat wing 2″ maximum wicker bill. 

2. 30 in x 70 in will be the maximum area allowed for sideboards. Max wing width will be 61 inches.

3. No wing adjustments from the cockpit will be allowed. No hydraulic cylinders or valves, no levers or cables for adjustments will be allowed.

4. Number must appear on both sides of the wing in sizes suitable for scoring purposes. Numbers must be 16 inches tall.

5. Front wings or nose wing will be allowed. If a front wing is used, the maximum size is 6 sq. ft. Leading edge of nose wing must be within 20” of leading edge of front axle.

Body, Frame and Bumpers


1. Frame and body must be sprint car appearing and must be inspected to be deemed safe for competition by Track Officials.

2. Front and rear bumpers are required. Any bent or broken bumpers not meeting the approval of Track Officials must be replaced. No aluminum or titanium bolts allowed anywhere on the car. No carbon fiber or titanium parts will be allowed. All bolts must pass a magnet test.

3. Nerf bars, right and left are required.

4. No rubber stretch straps or bungie cords.

5. No black pipe fittings.

6. No nut will have any internal threads visible. The bolt should be at least flush with the nut.

7. Workmanship, safety, and appearance shall determine whether or not a car will be allowed to compete.

Axles, Drivelines, Steering


1. Front spindles may be steel or aluminum.

2. Any torque tube will be permitted. A torque tube safety hoop is required. No straps.

3. No torque arms or open drivelines allowed.

4. Only approved racing steering boxes – Power or Manual.

5. No cockpit adjustments of any kind allowed. ( weight-jackers, shocks, wing sliders,…etc.)



1. Aluminum racing seat required – Full Containment Seats Highly Recommended

2. Five point seat belts required. Belts cannot be over 2 years old.

3. Helmet – Snell 2010 or newer HIGHLY Recommended.

4. Flame retardant driving suit required.

5. Flame retardant driving gloves required.

6. Flame retardant driving shoes required.

7. Fire proof underwear and socks recommended.

8. Arm restraints recommended.

9. Roll bar padding, headrest and rock screen recommended.

10. Side head restraints recommended – Head and neck restraints Highly Recommended

Tethers and kingpins not required for weekly events.

Technical Procedures and Penalties


1. Any car may be inspected after an event by Track Officials. If a car is found to be illegal during technical inspection after event, the illegal car will lose its finish position, all points, and money for that event.

2. Upon the occurrence of the second infraction, all points earned for the year up to date will be forfeited as well as the points and money for that event. The owner/driver and car will be suspended for four dates of competition. This suspension can be carried over to the following season.

3. Track officials will have the final say in determining the validity of a protest or rules infraction.

4. Transponders required

5. Raceceiver radios required




The only trucks to be used will be Chevy S-10, GMC S-15, Ford Ranger, and Dodge Dakota.



• Stock factory steel bodies only, complete including tailgates.

• Inner panels may be removed below factory beltline.

• Door window opening must remain stock with complete door factory headers.

• Windshield and back window openings must remain stock factory construction. No fillers in the windshield.

• No hood scoops of any kind. This includes any factory options or up-level vehicles. No holes in hood.

• Hood crown must remain factory stock.

• Stock bumpers only which may also be reinforced. No visible crash bars – front or rear.

• Bumpers must be no lower than 12 inches. No higher than 16 inches to the bottom.

• Top of bumper may not be any higher than 2 inches from bottom of tailgate.

• Wheel opening flanges must be turned inboard.

• Stock appearing rockers (size & location). No body-side skirts below rockers. No rear skirts. This measurement from the top of box to bottom of rocker must be no longer than 32 inches.

• Truck must have front and rear firewall with adequate protection. No holes showing.

• Rub rails made of one-inch square tubing will be allowed. Rails must have ends tapered and be mounted tight against the body and be free of sharp edges.

• Rear deck may be covered with aluminum or steel and have a hinged lid over the fuel cell.

• Rear deck cover must be flat and flush with top of box. Must run full length of box.

• All trucks must be neatly painted and lettered. The truck must have a number of no less than 18 inches on each door and roof.

• Badly damaged trucks will have to be repaired. Any sharp edges must be repaired or made smooth.



Spoilers must be mounted on rear of the bed. Spoiler Blade will be a maximum of 8 inches. Spoiler Blade must be flat. Maximum of 1-inch high wicker bill. Any spoiler angle.

Spoiler may not extend past sides of the bed. Spoiler sideboards no larger than 100 square inches. Only 3 supports will be allowed.



• Stock truck frames must be used.

• Frames must remain stock width.

• Frame supports may be added.

• Frame lighting holes not allowed.

• Frame rails must remain stock from front to rear.

• Lower engine is allowed may not remove the lower portion of factory cross member. Frame must be plated in if there is material removed.

• Notching frame to lower seat ok must remain factory frame bottom and lower 2 inches of the side. Frame must have square tubing put in this area to support frame.

• Roll cages will be 6-point design with 1 ½ inch minimum diameter with .095 wall tubing with a minimum of 3 bars in each door. Each door bar must be single piece construction.

• Saddled tubing joints recommended. If not, gussets required.

• Roll cage offset allowed on right hand side only.

The following wheel bases will be used:

  Chevy/GMC S-10/S-15 Ford Ranger Dodge Dakota
Short Bed 108″ 108″ 112″
Long Bed 118″ 114″ 124″
Ext. Cab 123″ 125″ 131″


Suspension, Springs and Shocks


• Racing coil springs may be used with a minimum of 5 inch diameter – front only.

• Weight jack bolts will be allowed on front coils only.

• Rear leaf springs must remain in stock locations. Using factory front mount. No rear coils

• Rear sliders or shackles allowed. Shackles must be mounted in factory location.

• Rear springs will be allowed to be aftermarket. However factory wheelbase must remain.

• If rear sliders are used they may be placed within six inches of factory spring mount.

• Rear spring cannot mount any higher than the bottom of the frame.

• No coil-overs allowed. No coil-over eliminators allowed.

Racing shocks may be used. One shock per wheel. NO GAS SHOCKS ALLOWED

• Upper A-frames may be tubular. Upper A-frames may be notched for weight jack bolts and may run parallel to frame. Upper A-frames must have a connected rear cross shaft.

• Lower A-frames must be factory and may have a maximum extension of 2 inches. Extension must straight out. Lower A-frame must be mounted in factory mount.

• Any factory spindle may be used. No after market or tubular spindles may be used. No wide 5 hubs.

• Rear end torc-link may be used.

• Strap for drive shaft required.

• Drive shaft must be painted white.



• Steering must remain stock to frame. Original equipment only. Aluminum tie rods ok.

• Minimum of 2 universals in steering shaft.

• Steering quickner may be used.

Rear End


• No quick changes.

• 9-inch Ford rear end allowed.

• Floater rear end may be used. No aluminum. No wide 5 hubs.

• Rear ends may be locked.

• Maximum rear track width of 74 inches as measured from outside sidewall of left rear tire to outside sidewall of right rear tire.

• No four link or Z link type

• Rear end must mount solid to the rear spring no floating bird cages allowed. Must have 2 u bolts on each side holding rear end solid to the springs.



• Must have 4 wheel brakes working at all times.

• Disk brakes on the rear ok.

• No aluminum calipers.

• Dual master cylinder/pedal assembly with brake adjuster may be used.

• No brake shutoffs of any kind.

Wheel and Tires


• Any 8-inch by 15-inch steel racing type wheel only.

• No aluminum wheels.

• Bead locks ok.

• Any brand 8 inch racing tire allowed. NO STREET OR HIGHWAY TIRES ALLOWED.

• Wheels and tires must pass tire gauge.



• Any V-8 or 6 cylinder engine may be used.

• Any engine may be used in any truck ( For example, a Chevy engine in a Ford truck ).

• Engine setback #1 spark plug will be no farther back than the center of ball joint.

• No aluminum heads or blocks.

• Only one Holley 4412 – 2 barrel carburetor allowed – Must pass Holley No-Go gage. Choke plate must be removed. No Dominator or Predator style. No Webers.

• Adapter plate ok. (Remember no hood scoops)

• Aluminum intakes ok.

• Headers ok.

• Exhaust may not protrude past side sheet metal.

• No crank trigger ignition. No magnetos.

• Schoenfeld Muffler 112535 or 113035 required.

Radiator and Fan


• Radiators must be in front of engine.

• Overflow can must be used.

• Shroud must cover upper 180 degrees of the fan. Shroud must be metal and completely cover fan.

• Electric fan ok.

• No oil coolers allowed in drivers compartment.



• Any OEM transmission may be used. Must be stock appearing. Automatic or standard ok.

• No quick-change transmissions.

• No Bert or Brinn type transmissions.



• No dog clutches.

• No direct drives of any kind. Front pump drives OK.

• Any stock clutch or multi-disk may be used.

Fuel Cell


• Fuel cell in steel can is mandatory.

• Must be mounted behind rear axle with minimum of 2 – 2 inch by 1/8 inch steel straps around fuel cell.

• Fuel filler may not extend outside of body.

• No electric fuel pumps.

• Fuel lines must run under floorboards

• Pump gasoline or straight alcohol (methanol) only.

• No nitro or nitrous oxide systems.



• Helmets required and must pass inspection. (Snell 2005 is highly recommended).

• Flame retardant driving suit required.

• Flame retardant driving gloves required.

• Fireproof driving shoes required.

• Competition type seat belts must be used. Lap belt and shoulder harness must be 3 inches in width minimum. Belts cannot be over 3 years old.

• Anti-submarine belt required.

• Aluminum racing seat is required. Seat must be mounted to roll cage in at least 4 places, 2 on the back and 2 on the bottom. (Full containment seats are highly recommended.)

• Must have approved padded headrest.

• Roll Bar padding required.

• Safety Bars required in front of driver.

• All trucks will be equipped with a small dry chemical fire extinguisher mounted (not taped) within drivers reach.

• Battery cannot be located in driver’s compartment. Battery must be on inside of frame rails.



• No mirrors.

• All trucks must have tow hooks, front and rear.

• Any trucks found illegal may forfeit points; money earned or may be suspended.

• Any illegal parts may be confiscated for the season.

• Rules may be added or changed as needed to better the division.

• Technical directors and track officials decision is final.

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