1. Refer to General Rules for non-building rules.
  2. No 4x4 or all-wheel drive vehicles allowed.
  3. Pre-derbied cars and trucks are allowed, provided they meet all rules.



  1. Remove all glass, chrome, plastic, moldings, headliner, dash & flammable material, A/C coolant, antifreeze, trailer hitches, and interior decking.
  2. Stock gas tank must be removed. A small metal tank must be mounted in the rear seat area. The tank must be very secure, safe, and covered. Plastic tanks are not allowed for safety reasons.
  3.  Electric fuel pump allowed but switch must be clearly marked on-off.
  4. No more than 1 battery allowed, which must be relocated to front passenger floor, secured and covered.
  5. Floor shifter allowed. Ignition & wiring modifications (hot-wire) allowed.
  6. Hood must have 12”x12” minimum hole to easily extinguish fires. Extra hole(s) in hood not required if you have at least 12”x12” header holes.



  1. Frame seam welding is allowed, no filler metal allowed, unless stated. Frame repair due to damage or rust is allowed – repair cannot exceed 1” past rust or damage. Frame repair metal cannot be thicker than Ό”. Repairs can only be made on 2 of the 4 sides of the frame. Paint all repairs a bright color for identification. Bolting or pinning of frames is not allowed. Frames will be scoped!
  2. No stuffing or filling of frame. Do not undercoat, paint, or put any substance in or on frame.
  3. Body seam welding, bolting, or screwing is allowed. Body repair due to damage or rust is allowed – repair cannot exceed 3” past rust or damage. Body repair metal cannot be thicker than 1/8”.
  4. Firewall, floor pan (for shifter), wheel wells, and fenders can be trimmed.
  5. Fenders or wheel wells may be bolted or welded.
  6. Tucking of trunk or roof is allowed. You must allow access for inspection.
  7. Doors, trunk lid, hatchback, or tailgate can be welded shut with Ό” thick x 6” max plates or straps. A 12”x12” access hole in the trunk lid or floor is required for inspection. Plates/straps cannot go to the frame. Tops of doors can be folded over and welded. If doors are not welded shut, they must be chained/wired. Two chains/wires per window opening allowed.
  8. Trunk lid/tailgate & hood can be secured by a max of 6 bolts each. Max of 1” diameter. Bolts can be welded or bolted to the frame. You may substitute an equivalent sized piece of steel (i.e. pipe or tube steel) and weld a bolt on the end, instead of using a long piece of threaded rod. No flat washers or plates bigger than 6”x6”x1/4”. Six chains/wires can be used if bolts are not – you cannot use both bolts & chains/wire.
  9. Body mounts may be removed. Original bolts can be replaced with up to 1” max diameter. Six additional body mount bolts may be added; they must all be vertical and no longer than 10” with max diameter of 1”. Any bolts holding gas tank, battery box, etc. to the frame are considered body mount bolts. No flat washers or flat plates bigger than 6”x6”x1/4”. Bolts can extend all the way through the frame but plates will need to be off for inspection.
  10. Rear suspension conversions are not allowed. No front suspension conversions allowed. Leaf springs must be no thicker than 3/8”. Main spring may be doubled and secondary springs must have at least a one inch stagger. Springs may be clamped. Control arms, A-arms, tie-rods, ball joints, and steering joints may be modified. Max bumper height of 28” from ground to bottom of bumper.
  11. Bumpers & brackets may be interchanged from make/model/year. Homemade brackets allowed but must be no longer or thicker than stock brackets.
  12. Bumpers, shocks, & brackets may be welded, bolted & chained.wired. Two pieces of 4”x12”x1/4” metal may be welded or bolted to help hold the bumper on. Bumpers may be trimmed but no sharp edges.
  13. Dash bar and seat bars are allowed for driver’s safety. Bars may be connected to each other with door bars and may be connected to the frame (in 4 places max). Bars may be welded to the frame. Bars may not extend past the firewall and may not extend rearward beyond the front most part of the rear wheel well tubs. Bars may not tie into rear frame humps or drive train. Halo (rollover) bars allowed but they must remain within the safety cage area.
  14. Driver’s door window and windshield net/guard is recommended. Hardtop (no post) cars must have straps or chains/wires from door to roof in door post and/or passenger area.



  1. Any engine, transmission, rear-end combination may be used. Rear-end must be a max of a 5 lug automotive type. Rear-end may be welded or spooled. Rear-end may be chained/wired to frame in 2 places with bolts – not welded.
  2. Engine must be within 5” of original position. Engine components may be modified (fan blades, header pipes, etc.). Transmission cooler allowed, must be secure and safe. Transmission may be chained/wired in place.
  3. Motor mounts may be modified to better hold engine in place but may not strengthen car. Engine may be welded or chained down with bracing or chains that cannot extend more than 12” from engine. Four places max.
  4. Distributor protectors allowed. However, guards and mounting brackets may not be any wider than the engine block.



  1. Radiator must be in stock position. No other auxiliary systems allowed. Radiator guards allowed, provided they are no thicker than Ό” and are connected only to the radiator and the sheet metal. They may not connect to the frame, bumper, or threaded rod for the hood.
  2. Any type of tire or wheel may be used. Split rims must be welded solid. Wheel weights must be removed. Valve stem protectors are allowed.
  3. All cars must have number on a roof mounted sign. Choose you own number, first come – first served.
  4. Truck height will be no taller than 28” to center of rear bumper. NO EXCEPTIONS.