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July 18-20,  2022

Nipawin Exhibition Grounds, Central Park

General Information/ Forms

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  • Imperials, hearses, ambulances, convertibles, or T-tops

  • Changing or taking out mounts (Body mounts have to be stock)

  • Holes larger than 3” through fire wall

  • Welding on frame of any kind

  • Foul language on car

  • Homemade bumpers

Items that MUST be removed:

  • All glass

  • Lights

  • Trims

  • Grill

  • Upholstery

  • Trailer hitches

  • Fuel tanks

  • Air conditioner must be discharged

Building a Safe Competitive Car:

  1. The tech judge’s decisions will be final. 

  2. There will be no welding on the car EXCEPT where specified – even as a field repair. 

  3. There will be no reinforcement EXCEPT where specified. 

  4. If it does not say it is allowed, then it is NOT allowed. 

  5. All vehicles will be checked for working brakes (**You must be able to stop the car**). 

  6. Mandatory seat belt – Lap belt is the minimum requirement.

Engines, Transmissions, and Differentials:

  1. May be interchanged, but must remain in the stock position and true to manufacturer (GM to GM, Ford to Ford, etc.).

  2. Motor mounts and transmission mounts may be chained welding to frame allowed rubber mount must remain stock.  

  3. Shifter type optional. 

  4. Differential may be locked. 

  5. Firewalls can be hammered back for distributor clearance no cutting out of firewall for adjusting timing.

  6. Transmission cooler optional. MUST be mounted under the hood in front or behind the rad or behind the driver, securely fastened with approved steel lines and adequate drain holes in floor. Driver must be protected from spraying of hot oil in case of breakage.

  7. Optional ¾” hose on transmission dipstick. 


 Steering and Suspension:

  1. Steering must be stock and in stock position. NO alteration or modification allowed. 

  2. You can put spacers in sagging coil springs to get your height.

  3. You can wire or weld coil springs to rear-end housing only to prevent springs from falling out.

  4. Leaf springs must be stock and if clamped only 2 per side for a total of 4 clamps on both springs.

 Paint and Body:

  1. Driver door MUST be painted white. 

  2. No profanity as decoration or advertising. 

  3. If two cars are entered, the paint jobs must be visibly different (cars must be easily differentiated). Roof signs are acceptable but MUST be bolted securely. 

  4. Factory body mounts only, no modifications. 

  5. Roll cage is optional must not be attached to frame or reinforcing the structure of the car.





Doors and Door Reinforcements:

  1. Doors may be chained or bolted shut. Welding of the doors is permitted, stitch weld maximum of 6-3” welds per door.

  2. Optional - Driver door can have a door bar bolted at medium height with minimum three ¾” bolts. This door bar must be a minimum 6” C-channel, maximum length of bar, 6’6”.  Passenger door may also be fitted with a door bar the same way.

  3. Optional - Dash bar extending door to door above steering column, must be bolted with ¾” bolts or larger with steel plates on outside of the door C channel.

  4. MANDATORY- Head post from the floor to the top of the roof supporting the driver seat must be bolted with a minimum of 3 bolts top and bottom and MUST be padded- in case of rollover.


  1. Car hoods and trunk hoods are mandatory.

  2. Hood must have a hole large enough for fire extinguishing. 

  3. Hoods and trunks must be chained or bolted with ready rod.

  4. The hood may have up to four ready rods each, two through the frame and two through the body using large washer plates that do not exceed 6” in diameter. The trunk can have up to four.  Two can go through frame. 

  5. Welding of the trunk is permitted, stitch weld maximum of 8-3” welds.

  1. No bolts allowed ahead of the front rad support. 

  2. Maximum bolt head size 1 ¼”; minimum bolt head size ¾”. 

 Cooling System:

  1. Must remain stock.  Rad may be wired or bolted in stock location.

  2. Anti-freeze MUST be drained and filled with water only. 

  3. Fan type optional. No metal flex fans allowed. 


Air Intake and Exhaust System:

  1. Must have an air cleaner assembly with a filter element to act as a flame arrestor. 

  2. Exhaust must exit the engine compartment through the hood or out the bottom – manifolds alone are NOT enough. 

 Engine and bumpers:

  1. May be interchanged from year to year, model to model, but MUST be stock to manufacturer (GM to GM, Ford to Ford, etc.). 

  2. Maximum 3/16” flat iron plates allowed to hold bumpers on. 

  3. Bumpers may be trimmed. 

  4. Bumpers may be welded to bumper brackets and bumper brackets to frame. NO other reinforcements allowed.

  5. No truck bumpers or homemade bumpers.


Tires and Rims:

  1. Any size rim that fits the bolt pattern. Rim CANNOT be altered, modified or reinforced. 

  2. NO split rims are allowed. 

  3. Valve stem protectors and tubes are acceptable. 

  4. Maximum tire height is 31”.10 ply max.

  5. No studded tires or tractor tires.

  6. No sand or directional tires. 

  7. Air only in tires. NO additives, liquids, solids, or fillers. 

  8. Wheel wells may be trimmed and bolted for clearance with a maximum of 3 bolts no bigger than 1 inch.

  9. All wheel weights to be REMOVED. 

Fuel System:

  1. Fuel leaks or potential leaks will NOT be tolerated. 

  2. Fuel tank can be boat, snowmobile, or fuel cell and must be located in the rear seat area of the car, securely mounted with nuts, bolts, washers, metal straps, or ratchet straps. NO screws or bungee cords. 

  3. A hole/holes must be cut in the floor near, around or under the tank for drainage. 

  4. MUST have floor pan plugs removed. 

  5. Fuel lines entering through the firewall into the passenger compartment must be approved. Metal lines securely fastened with short rubber connections are acceptable. 

Demolition Derby Rules

Vehicle Preparation

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