Attention Drivers: There will be a random check of "heat' winners and a check of
ALL "main" winners at a designated area. That area will be announced at your driver's
meeting prior to race time. The check will be for mufflers and tire diameters.
Car Specifications:
l. No convertibles, van, SUV’s or 4-wheel drives allowed.
2. Single drive shafts only, front-wheel drive cars allowed.
3. Car must be stock, no body alteration (see allowable body alterations).
4. All chrome, plastic and loose metal must be removed.
5. A 3/16” clutch plate shield required on all manual transmissions. Drive line loop required.
6. One naturally aspirated carburetor only. No rear engine cars.
7. No engine set back. A set back engine is an engine not located in the manufactured stock position.
8. Make of cars must have matching make parts (ie. GM to GM parts, Ford to Ford parts). This applies to motor and transmission only. NO truck parts allowed.
Allowable Body Alterations
Firewall may be caved or bent for distributor clearance only. NO HOLES CUT OUT!
Locked rear-end allowed. Posit action or high-strength rear-ends are recommended.
A-arm strengthening allowed
Single carburetor
Two shocks per wheel, no reservoir or exotic type shocks. If shock towers protrude from the hood, then they must be adequately covered with metal.
Motor tie-down recommended.
Frame connectors allowed and are recommended on uni-body cars.
Spring spacers
No long travel suspensions allowed
Extra protection on driver’s door, inside only
Gain access to shift linkage or floor shift
Skid plates must run from the front to rear not to exceed 24” wide
Electric fan
NO fuel injection except originally equipped
Reinforcement
No reinforcement permitted (except for driver’s door). No reinforcement permitted under the hood,
except that which is approved by the Tech Committee. See Roll Cage.
Hood, Door, Roof, Trunk
Hood, doors and trunks must be securely attached with cable, chain, bolted or welded.
Driver door must have (3) three bars in them as protection.
If vehicle has a sunroof, that area must be covered with metal and must be securely fastened.
At least a 6” fire access hole must be cut in the trunk if there is a fuel cell or tank contained therein.
Race vehicles must have a 4” x 10” fire slot in the hood on the passenger side.
Clearance for air breather in hood is allowed with 18” maximum.
Hood scoops allowed, not to exceed 4” in height.
Added Weight
Weight added to the car must be properly secured.
Horns
Horns are not allowed.
Glass
No glass in vehicle or bottom of doors except instrument glass.
Mirrors are NOT allowed.
Brakes
All four brakes must be in good working order at start of race.
Lights
One amber running light must be located in rear window compartment. No excessively bright lights.
Dimensions: 2”x 5” or 2” x 6” unit (10 to 12 square inch of amber lens.
Fuel and Fuel Tank Regulations
No exotic fuels allowed, based on NHRA fuel allowances.
The AMX reserves the right to test fuels.
Gas tank in a CAR may be in stock position or a manufactured tank. It must be leak proof, securely
fastened and vented in trunk of car with the firewall in place. If installed in the trunk, a 6” hole in the trunk lid is required for fire access. Gas line running through driver’s compartment must be encased in metal tubing.
Vehicles equipped with an electrical fuel pump must have a kill switch installed on the passenger side
roll bar with the switch painted orange. A (3) three inch letter E must be painted behind the number on the vehicle to identify that the vehicle is equipped with an electric fuel pump.
Rollover kill switch must be installed in all vehicles equipped with an electric fuel pump.
Master Shut-off Switch recommended to be installed: mounted in center of dash area, accessible for safety crew to reach from driver side, passenger side and through the windshield area.
Batteries and Exhaust/Mufflers
No under the hood batteries allowed.
Batteries must be securely mounted with minimum 3/8” bolts and fully enclosed in a Marine battery
box.
Headers allowed however, the exhaust must exit below the headers with muffled headers preferred.
Mufflers Mandatory: Muffler size does not matter, but if the officials feel that your car
is excessively noisy you will have to remedy the problem.
Transmission Coolers
No transmission cooler may be in driver compartment. Cooler may be in stock position or in trunk
with a fire wall in place. If cooler is in trunk, there must be a 6” hole in the trunk lid for fire access.
Transmission lines running through drivers compartment of car must be encased in metal tubing.
Radiators
Radiators must be in stock position. If radiator mount is broken, a mount may be made to put around
radiator to hold it in stock position. Screen or 1/8” maximum expanded metal may be installed in front of radiator
itself, but must not reinforce the front of the vehicle, cannot be attached to the bumper.
A 6" zone in front of the radiator core is granted
to install spray nozzles and/or other supportive design. No foreign metal, other than
the front bumper loop, is allowed past this zone.
Roll Cage A (6) six point roll cage is required (must be securely mounted and will be checked during the vehicle
inspection). The roll cage must have 2 points in front of the driver, 2 points behind the driver’s head and 2 anchor or support points. Roll cage may be tested with a hammer. A full roll cage is allowed with all bracing behind radiator support. Front fender support consisting of 1/8” round or square tubing being tied to the frame is allowed. Roll bars may be extended into the trunk area of car.
Bumpers
A “bar” must be used to close bumper ends (front and back) by making a loop from bumper to frame, not to exceed 3” from the wheel opening. Only tubing can be used to make this “bar”.
It is strongly suggested that you strap or chain your bumper to keep it from dragging on the ground.
Maximum bumper height, front and back, is 27 1/2" from the ground. NO EXCEPTIONS!
Nothing may be attached to the front bumper except the bumper loops.
Only car bumpers allowed.
Mud Flaps
Mud flaps are mandatory on all vehicles at the start of the race. Mud flaps must be securely bolted to
the rear bumper, No chains.
Flaps must be 12" wide and 4" from the ground and located directly behind the rear tires,
being horizontal with the outside of the rear tire tread pattern.
Mud flaps must be made from rubber material (including rubber belting) at least 5/16" thick.
Fire Extinguishers
Each vehicle must have a fire extinguisher in their pit area, it does not need to be mounted in the
vehicle.
Tires
Maximum 29” tires need to be D.O.T. approved (car or pickup tires only) This will be enforced.
No studded tires allowed.
Only one tire per wheel, NO tire within a tire.
Harness, Window Net & Numbers
A five-point harness that goes over both shoulders and across the lap mandatory. NO HOMEMADE
HARNESS OR WINDOW NETS WILL BE ALLOWED FOR THE RACES. Harness must anchor below shoulder line. All five points must be in use.
An approved racing window net is mandatory to cover the driver’s door window opening.
A covering is required over the driver’s windshield area. This does not have to cover the entire window. No door screen allowed. 1/8” expanded metal recommended. A support bar located in the center of the windshield is mandatory.
Numbers have to 14” or larger on both front doors and be contrasting in color to the body color of the
vehicle. A number fin is required on the top of the vehicle, with numbers being on both sides of the fin. You may use either a single fin or an A-frame fin. The numbers on the fin must be no smaller than 7” and the fin must be painted black with white numbers or white with black numbers. No Exceptions! The fin must be mounted on the center of the roof so that the numbers can be read from the side of the vehicle.
Door numbers will not be mandatory, but if you have door numbers they must match the fin number.