1. Driver side door protection on outside of door is required, (i.e., a scraper blade or c-channel iron no thick-er than ½”) extending past the driver’s door by 6” on either side and bolted a minimum of 4 times. Bolts shall be no larger than ½” and will not extend out past the nut more than ¼”, washers shall not exceed 4”x4” and ¼” thickness.
2. Driver’s door must be painted fluorescent orange; NO other part of the car may be painted fluorescent orange.
3. A center bar from driver side center post to passenger side center post behind the driver’s seat is recom-mended. Bar can only be secured to the door post and no other part of the car. Bar or post shall not ex-ceed 6” in diameter and must be welded in to either the vehicle itself or to a plate bolted to the pillar. Plates shall not exceed 8”x8”x ¼” thick, and shall be bolted in a minimum of 4 places. Bolts not to exceed ½” and cannot extend past the nuts more than ¼” with standard washers.
4. “A” pillar bracing will be allowed. Dimensions and mounting rules are the same as the center bar. “A” pil-lar brace may be padded for driver protection, but CANNOT be tied to center bar.
5. Remove all glass, fiberglass, lights, light brackets, body trim, door handles, locks and clips. Remove head-liner, rear seat, door panels, carpeting, and all unnecessary electrical wiring. If it will break, fall off, or burn - get rid of it! Fuel doors must be removed or welded shut. No flags, antennas, horns or other devic-es may be mounted to the car.
6. Dash boards and air conditioning/heater ducts may be removed.
7. Firewall must be in place between the motor and cab. No holes of any kind allowed on driver’s side of firewall, openings must be covered with maximum 18 gauge sheet metal secured with screws, bolts, or rivets (.030 minimum). NO duct tape allowed on firewall.
8. Any STOCK American or foreign auto or station wagon is allowed. NO jeeps, convertibles, hearses, ambu-lances or limousines are allowed. 4WD or AWD vehicles must have one driveline removed.
9. Cars with other model engines and drive trains must have prior approval from the judges.
10. Factory fuel tanks must be removed and a suitable tank of steel, aluminum or certified plastic must be mounted in the back seat area with a splash guard. The tank must not exceed 6 gallons and must be vent-ed to the outside of the vehicle, including boat tanks. The electric fuel pump must also be securely fas-tened down and covered with rubber that is also secured. Box or tank must be bolted to the floor, NO sheet metal screws, plumbers tape, ratchet straps or bungee cords allowed.
11. Battery must be relocated to the inside of the car and securely fastened to the floor and covered. Batter-ies must be bolted to the floor, NO sheet metal screws, plumbers tape or bungee cords allowed. Must either be in a box or covered with rubber that is secured in place.
12. Radiators and transmission coolers may be relocated. They must be securely mounted in the back seat area; cooler lines must be made of steel or certified oil line and secured. Lines must be wrapped securely if they are run inside the vehicle, clamps are allowed. NO gas line or heater hose will be allowed.
13. Doors must be secured by 2 of the 3 listed means: welded, bolted, or chained. If chained, chain cannot be larger than ½” and bolted with ½” bolts. If bolted, no larger than ½” bolts that extend no more than ¼” past nut with standard washers. If welded, welds must be minimum 2” and no more than 6” in length at no more than 6 points along door. Minimum filler rod may be used to fill gap, metal strap may NOT be used.
14. Hoods must be able to be open for inspection. Vehicle must have a minimum of two - 4” holes cut in hood, one on either side of motor. Hoods must be secured at 4 points either using bolts or stock hinges and bolts. Hood bolts cannot be larger than ¾” with no more than 4 washers.
15. Trunks must be secured in 6 points using one of the three listed means: welded, bolted, or chained. If chained, chain cannot be larger than ½” using ½” bolts. If bolted, bolts cannot be larger than ¾” with no more than 4 washers. If welded, welds must be a minimum 2” and no more than 6” in length. Trunks must be cleared of any debris.
16. Minimal sheet metal repair allowed, but cannot exceed 18 gauge in thickness. Patches not to exceed holes by more than 1”. No rebar, angle iron, plate, concrete, etc. to add strength or stability to the car.
17. Automobile bumpers only and only two per car. No oil-field bumpers or homemade bumpers. Remove all trailer hitches. No added steel under bumpers for added strength. Bumpers are not allowed to exceed the width of the vehicle, bumper may be cut to fit width of vehicle and welded back together. Butt weld only no lap welds. Bumpers must be bolted and chained at two locations on the frame with no more than 12” slack in the chains. Chains are not allowed to be tightly wrapped for use as a battering ram.
18. No suspension lifts of any kind. Leaf springs cannot have more than four spring clips, two in front and two in rear of axle. No truck differentials allowed in car classes, axles must be located above springs (no spring
- over axle lifts). No coil spacers of any kind.
19. No welding of the frame or bending of the frame to increase stability.
20. No welding of body to frame.
21. No welding of body to bumper.
22. A windshield post is recommended to keep driver safe. One post running vertically from the bottom to the top of the windshield frame is acceptable.
23. The hole in the floor for transmission shift linkage must be covered with a rubber boot. A rubber inner tube fastened to the floor board and clamped around the shifter is acceptable.
24. Engine mounts may be secured using up to ½” chain or 5/8” bolts.
25. Exhaust pipes running under the cab must extend to behind the transmission cross member.
26. No wheel weights. No tractor tires. No fluid filled tires.
27. Vehicle must have four wheel brakes at the beginning of the derby and be able to stop within 10 feet dur-ing inspection.
28. All cars must run liquid fuel, gasoline, or diesel. NO propane, NOS, etc.
29. All radiators must be drained of all antifreeze and refilled with water.