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Demolition Derby Truck Rules
Demolition Derby Truck Rules | Truck Rules |
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Demolition Derby Rules TRUCK RULES (Safety rules apply)
1.Any full size ½, ¾ or 1 ton LT Truck, SUV, Suburban, or Van may compete. No compact truck, foreign truck or passenger car allowed. 4 X 4’s may compete with the front drive shaft removed.
2.Bumpers must be an automotive type or LT Truck bumpers and bumper brackets in any position may be used front or rear. No aftermarket bumpers, homemade bumpers or bumper brackets allowed. All trucks MUST have bumpers on front and rear. Bumper brackets and bumper may be welded solid. Bumpers must be stock height, 2 X 4 models may raise front to level with rear.
3.Cab and Box Mounts may be removed. Body bolts may be replaced with a 5/8”bolt, with a ¼” thick 6” X 6” washer on top and on bottom. Four additional bolts must be added from cab to frame and six bolts from box to frame or a minimum of 10 extra bolts and 4” X 4” washers minimum must be added to secure body to frame.
4.Engine must only be an automotive or LT Truck type. Motor mounts may be welded, chained or cabled and added solid engine mounts.
5.Extra reinforcements – No #9 wire, sheet metal screws, chains, cables, bolts, or added metal unless specified in rules.
6.Fenders front and rear may be rolled, welded or bolted with no added metal.
7.Frame must not be reinforced. The cab may be welded to the frame and box to the frame and all riveted frame brackets. Frame may be repaired if broken. Use the same thickness of metal as frame to repair. If patches are excessive in anyway, they will be cut at judge’s discretion.
8.Hood must remain in factory position. The front two hood bolts must go through the front radiator support mount and frame with no spacer. Hood may be welded solid with 3/8” filler rod, or MUST be bolted, or chained in a minimum of 4 locations and 6” X 6” ¼” thick washer must be used on top of hood bolts to keep bolts from pulling through. The bolts must be a minimum of 5/8” or maximum of 1”, or minimum 4 chains 3/8” thick. There must be two 12” holes cut into hood for fires and the tin may be bolted or welded around each hole. All cooling fans must be covered or removed.
9.Radiator must remain in stock position. Radiator blow by tubes must be secured and remain pointing down at all times. No extra cooling allowed for radiators. Original or electric fans okay and ratchet straps may be used to secure radiator. Top of radiator support may have one piece of angle iron 2” X2” ¼ thick from fender, and two 2” X 2” ¼” thick angle iron from radiator support to top of frame in front of control arm/A frame. Air conditioning condenser may be welded to front of radiator support.
10.Rear end must not be larger than 1-ton LT Truck type front or rear. The rear end may be tied to the frame in two locations with 3/8” cable or chain. Leaf spring truck springs must have a 2” stager and maximum of 11 leaf springs. A total of 3 spring helper clamps in front of axle and 2-rear of axle per side. These clamps must only be a maximum of 2” wide and 5” long. The leaf spring mounts may be welded to the frame front and rear.
11.Shocks may be welded solid.
12.Steering and suspension components may be interchanged and reinforced. Steering columns may be altered to prevent steering loss.
13.Tailgate must be secured firmly to box or removed.
14.Tires any ply with a maximum of 31” height. Tire inside a tire, tubes, solid tires, implement tread tires, valve stem protectors and grease on tires are all okay. No water or other ballast in tires, studded tires, duel tires on rear, split rims, paddle rims or reinforced rims. All wheel weights must be removed.
15.Welding. All cab and box seams interior and exterior may be welded. The cab and box may be welded together, and use a fill material to fill in the gap between the cab and box. Doors and tailgate may be welded with metal no more than 4” wide maximum or 2” overlap on seam. If doors and tailgate are not welded, they must be bolted or chained with same size bolts or chains as hood, in a minimum of 2 locations per door or tailgate for safety. Tops of doors may be beat down and welded with no added metal. Rust holes or metal tears may be patched. Use a maximum of 1 layer of 18-gauge metal to patch rust or tear use only enough metal to patch hole or tear or just weld it.
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