Truck Rules & Regulations

2018 Truck Rules and Regulations

Any full size passenger truck type vehicle – pickups/suburbans/tahoes/ broncos and vans.

• No dual wheels. 4X4 trucks are allowed. No front drive shafts allowed to be ran if vehicle is 4WD. NO STRAIGHT FRAMES ALLOWED. NO WEDGE VEHICLES ALLOWED.

General Preparation:

• All glass, plastic and pot metal must be removed. Nothing may remain in the bottoms of the cab or doors.

.1/2in thick - 5in wide x 24in long piece of steel can be added to each frame rail on 1/2 ton Trucks only.

• All outer hardware must be removed - door handles, mirrors, chrome, moldings, screws, fiberglass, etc. No added weights to any car.

• Rear seats in all tucks and all decking in suburbans, Tahoe and bronco (etc.) must be removed.

• Front seats must be securely bolted to the floor, however, these bolts may NOT go thru the frame!
You must have a functioning seat belt. No shoulder straps connected to lap belt.

• All flammable materials must be removed from the truck, suburbans, tahoe and bronco (etc.) other than safety padding and the driver's seat.
Tires, Rear Ends, and Brakes:

• No split rims, studded tire. No dual tires. Each truck will have 4 wheels max. Weld in centers are allowed 9" max. Stock centers maybe cut out and inserted into another stock rim. Rims may not be reinforced.

• Valve stem protectors are allowed. Valve stem protectors are not meant to strengthen rim in anyway.

• Any tires are allowed.

• No rear ends larger than a 8 bolt floater. You may have 1 chain per side of rear axle to wrap around axle and frame. This chain may not exceed 7/16” chain and 1-7/16 bolt and nut. No welding of chain.
This chain is to restrict suspension travel.

• Rear leaf springs may not be re enforced in anyway, shape or form. This means weld, tape, bolt, wire chain (etc.). You may run 4 homemade spring clamps per side of truck ( rear leafs only). Each clamp will be allowed 2- 3”X6”x3/8” max plates, 4-5/8 washers and 2- 5/8 bolts and nuts max. No welding.

Bumpers / Push Bar :

• You may run a push bar or a car bumper on the front only. ONE OR THE OTHER NOT BOTH.

• Any automotive bumper allowed. Bumper maybe seam welded and stuffed. Holes maybe filled in with plate and weld. No DEC bumpers allowed or homemade bumpers allowed.

• Bumper ends must be rounded and smooth. No sharp or jagged edges allowed.

• Bumpers must welded directly to frames. You may use 2-2”X6”X1/4” straps per side of bumper to weld from bumper to frame. This means 3” on the bumper and 3” on the frame. No other material maybe added or used.

• Push Bars

Factory bumper maybe welded to the frame. Push bar will consist of 2 vertical bars,2 horizontal bars and 2 kickers max. Over all height may not be any taller than the top of the core support. The bars may not exceed 2” diameter and 1/4” thick. The horizontal bars may not extend past the outside width of the front frame rails. The vertical bars may not sit any farther forward than the back of the front bumper. The kickers may only come off the top back of the push bar and be angled into the engine
compartment. They may only mount to the top of the frame. No further back than the center of the upper ball joint. The push bar may be welded or bolted to the frame only.

• No welding, bolting, wiring, taping or chaining of body unless stated. No adding metal or any other material to strengthen body unless state.

• Body shaping is not allowed. No folding metal over to create a double effect.

• No doubling of body panels allowed, no added metal to body. No bolting metal together unless stated.

• Doors may be welded, chained, wired or seat belted together only. If wiring, chaining or seat belting doors shut you are allowed 10 spots max. No fastening around frame or cage. If welding doors shut you may us up to 1/4” flat stock max by 4” wide max. Only outside of doors maybe welded.

• Welding box to cab is allowed, full height of the box only. Flat stock steel only, 1/4” max thick and you may over lap the factory gap by 3” in each direction max.

• Quarter panels and inner wheel wells maybe welded to box floor in only the 2 following ways: 1) you may weld 25-3” welds per side of box max. 2) you may use 25-2”X3”X1/4” max plates max. Welding may only be done on the inside of box. Suburbans, Tahoe, Broncos (Ect) may weld as well but must be no further forward than rear door seam (DOOR MEETS QUARTER PANEL).

• VANS EXTRA BODY SEAM WELDS MUST BE AT LEAST 36” from back of front seat going to rear of van. WELDS MUST BE INSIDE OF VAN.

• Quarter panels must remain vertical. No wedge trucks allowed or Sedagons.

• Tail Gates maybe dropped and welded to quarter panels. You may use 4” wide strap max / 1/4” max thick. You may weld 4”X4”x3/8” max angle iron from outside of rear frame rail to outside of rear frame rail. This is used to bolt the tailgate between the rear frame rails. You may use 4-3/4” max bolts and nuts. 10”X10” washers max.

•At least one (1) mandatory chain ( no welding chain links), cable or wire must be installed between roof and cowl (middle of windshield) to prevent hood from entering driver’s compartment. NO BARS ALLOWED.

•Rear cab back glass opening must be covered with a strong wire or nylon mesh screen. (This is to keep driver from putting hand out rear window opening). Screen may be used in place of windshield.

• Floor boards must be adequate at driver's feet.

• If floor boards or body needs to be patched it must be done with same thickness sheet metal. This means an actual hole all the way through the sheet metal. Sheet metal may be overlapped by 1” max all the way around the hole. You may weld, bolt or rivet sheet metal into place. Only 1 of the 3
methods maybe used to secure the repaired sheet metal into place.

• Aftermarket components are welcome. No components to be welded to the floors, doors, roof or body (gas tank, gas lines, battery box, gas pedal, etc.). All components must be bolted in. No components may strengthen the body, frame or cage in anyway.

•Battery is to be relocated to passenger front floor or maybe floated from inside of cage ( passenger side).

• Auxiliary tank must be securely mounted at least three inches (3”) from front of truck bed, center of bed forward of the rear axle. No 1-5 gallon gas cans, must be a marine type metal tank or fuel cell.
Secured cap, lines and fittings must be leak proof. Tank must be covered or enclosed in steel. NO gas lines through interior. All gas lines must be run under cab body.

• Cutting fenders and quarter panels for wheel clearance is allowed.

• Hoods must have a 12"x12" min. hole cut in center. Bolting hood sheet metal back together is allowed using 8 - 3/8 bolts and 3/8 washers max. No welding bolts, washers, nuts or sheet metal.

• No welding hoods shut. Hoods must be open for inspection.

•Hood maybe secured in 6 spots max. you may wire, chain, seat belt or bolt hood shut (SHEET METAL TO SHEET METAL). 10”X10” max washers if bolting hood shut and 3/4” bolt and nut ( no welding). Front 2 core support mount bolts may come up threw the hood. All thread maybe up to 1”
diameter no sleeving the all thread. No welding of all thread, nuts or washers.


• VANS MUST CUT SIDE WINDOWS IN BACK QUARTER PANELS IF NOT CUT IN FROM FACTORY. THE WINDOWS MUST BE AT LEAST 20”X40”. You may bolt sheet metal back together using 20- 3/8 bolts, nuts and washers max. NO WELDING OF SHEET METAL OR BOLTS, NUTS
BACK DOORS OF VANS MUST HAVE AT LEAST A 12”X12” WINDOW CUT IN EACH DOOR. Your allowed 8-3/8 bolts,nuts and washers to bolt sheet metal together. No welding of sheet metal, bolts, nuts or washers.
Body Bolts:

•Stock body mounts may be removed and replaced with aftermarket body mounts. After market mounts may not exceed the size of stock mounts. Bodies may set flat on frame.

• Bolts may not exceed 3/4", only 2 nuts per bolt and no welding of body bolt, nuts or washers. Bolts may only go thru 1 thickness of frame.

• Washers must not exceed 10X10" diameter (square or round) 3/8" thick max.

• No welding bolts, nuts or washers to body or frame.

• No adding body bolts in anyway. (Unless specified)

• You may add 4 additional bed bolts to a pick up. Suburbans, Tahoe, Broncos (Ect) may add 4 additional body bolts as well but must be no further forward than the rear quarter panel and door seam. (Door MEETS Quarter PANEL). Must follow the above rules on body bolts.

• VANS EXTRA BODY BOLTS MUST BE AT LEAST 36” from back of front seat going to rear of van.


• Any engine may be used in any car.

•No full engine cradles. Definition of full engine cradle: Anything that connects front plate to mid plate BELOW the engine block. Cradles and protectors are not allowed to strengthen frame or body in anyway. Distributor protectors cannot be wider than highest point of the cylinder heads.

• Pulley protectors are allowed.

• All cradles and protectors must be bolted to engine or transmission.

• Engine frame mounts must be stock OEM (Chrysler, Ford or GM). No homemade frame mounts allowed or any form of solid mounts allowed. No skid plates allowed. Frame mounts may be interchanged Ford to GM etc. Lower motor mount must be bolted or welded to engine cradle, not to
frame rails.

• Engine frame mounts must be mounted on top of engine cradle (K Frame). On top of cradle means no recessing them down into or mounting them behind or in front of engine cradle frame.

• Engines maybe chained down using 2 chains only. 3/8" chain maximum. No longer than 12". Chains may on be welded to the engine K frame only. No welding chain links together. No more than 3 links of chain may be welded to the K frame. This will be strictly enforced.

• Air cleaner must remain over carb at all times.

• Electric fuel pumps are allowed but must have an on/off switch near steering column and market with orange or red paint.

• No starting fluid allowed.

• No engine oil coolers.

• Hood must remain over fan and radiator at all times.

• Only 1 battery may be used.

• Radiators must be in stock location.

• OEM style radiators, no homemade construction radiators. NO RADIATOR PROTECTORS.

• No adding cooling capacity.


• Transmission and cross member must be of Truck origin.

• Trans cooler are allowed. Must be secure and have a cover or shield to protect driver. Mounting of trans cooler may not strengthen Truck at anytime.

• Metal or high pressure lines must be used.

• Aftermarket bell housing and trans braces are allowed.

• Aftermarket bell housings and braces are not allowed to strengthen frame or body.

• After market bell housings and brace may not attach to frame, cage or body. Only cross member.

• After market driveshafts allowed.

• Transmission may be bolted, wired,welded or strapped to cross member.

• No adding metal or brackets to frame unless specified. No trailer hitches. No material or substance maybe added to strengthen frame.

• No filling any factory holes in anyway.

• No welding to frame or seams unless specified.

•You may weld 4”X4”x3/8” max angle iron from outside of rear frame rail to outside of rear frame rail.
This is used to bolt the tailgate between the rear frame rails. You may use 4-3/4” max bolts and nuts.
10”X10” washers max.

• ½ ton trucks with 5 or 6 lug hubs are allowed a 1-1/2”x5”x24” piece of steel welded to the frame on each side – at the location of your choice. This must be a continuous piece and cannot be cut to equal 24”. THIS PLATE MUST BE PAINTED A BRIGHT COLOR TO STAND OUT.

• No painting or undercoating or mudding up frames for any reason. If frame is painted, undercoated or mudded up you will be asked to remove it or LOAD YOUR VEHICLE.

• Any metal added or weld will be asked to be removed completely. Not just sliced in the center but removed. Failure to do this you will LOAD YOUR VEHICLE TO GO HOME.

• Lower motor mount must be bolted or welded to engine cradle, not to frame rails.

• NO FRAME SHAPING ALLOWED. This means no denting or scratching. This will be strictly enforced.

• Rust holes maybe repaired using 1/4” flat stock max. You may overlap the hole 1” all the way around.
Welds no more than 1/2" wide. Must be an obvious hole that can be seen from inside of frame.


• Suspension and steering must stock truck origin.

• Suspension and steering must be OEM factory made. No homemade suspension parts allowed unless specified. No homemade tie rods. TIE RODS MAYBE REINFORCED WITH TUBE,PIPE or ANGLE IRON FROM END TO END OF OEM FACTORY TRUCK ORGIN TIE RODS. A STORE

• No strengthening suspension in anyway unless specified.

•Upper A arms maybe welded down in 2 spots total per A arm. You may weld a 2”X4”X1/4” strap, 1 on the front of the A arm and 1 on the back of the A arm. Anything over and above will be cut off.

•Steering shafts may be altered. Steering shafts may have slip joint and
a knuckle in line.

• 4 wheel drives may not do anything with the front springs ( no welding or reinforcing in any way). They must remain stock from factory.

• No leaf spring conversion. Must use factory type suspension car came with.

• Leaf springs must remain in original position.

Pre-Ran Trucks:

• If your frame is bent you may use a 4"x6"x1/4" max. plate and weld to frame. Max 2 plates per frame rail. This means 4 plates max. Frame must have obvious bent spot in order to be able to plate. FLAT STOCK only. You may bend your plate to fit contour of frame. 1/2" wide weld. Just because your TRUCK is dented doesn't mean you can plate the frame.

• If plated over and above rules you will be asked to cut plate and weld off completely. Failure to do this, you will LOAD YOUR TRUCK.

• Officials decision is final.


• Cages are not to exceed 2"x8"x1/4" tube. Cage must be a minimum of 4” off any floor sheet metal ( including trans tunnel).

• A 4 point cage is allowed. That will consist of a bar going side to side in place of dash. A bar behind the FRONT seat. 2 bars that run from front to back joining the dash bar and bar behind seat.

• The cage maybe welded to the frame in 2 spots max. The 2 down legs may only come off the bar behind the seat.

• No attaching any part of cage to frame, motor, trans, or trans cross member.

Rollover Bars:

• Rollover bars may not exceed 2”x8”x1/4" tube.

• Rollover bars maybe attached to door bars or bar behind seat only.

• Rollover bars maybe bolted to roof in 2 spots max.

Gas Tank Protectors:

•This is to protect the tank and not reinforce the truck. No materiel larger than 2”X2”X1/4” max tubing or round stock. 2 vertical bars maybe mounted to the box floor and no higher than the cab. These bars may have a 10”X10” mounting pad welded to the bottom. The mounting pad may ONLY be bolted to bed sheet metal. The protector must be mounted inside of the box and no wider than outside of frame rails. You may have 2 horizontal bars max connecting the vertical bars.2 down bars max may connect to the top of the vertical bars and angle down to the box floor. They may not be any further back than front of rear axle tubes. 2- 10”X10” max plates maybe welded to the bottom of the angled bars and bolted to bed floor. This protector may not be welded to the frame or bolted to the frame in anyway.
Suburbans, tahoe, bronco (ect) may have gas tank protector as well but must be no further forward than the rear quarter panel and door seam. (Door MEETS Quarter PANEL).

• This may not attach to the cab or roof of any truck,suburban, tahoe, bronco or van.


TNT Demolition Derby LLC