Demo Derby


Entry Fee $50 for driver and car; $20 pit person


General Rules

1.  4 point floating cage

2.  Halo to cage only no points to floor

3.  Tank protector no wider than 24”.  Must have space between rear speaker hump – 1“minimum

4.  Any tire ok



1.  Any automotive bumper (no loaded bumpers – no Chrysler pointy’s

2.  Can cut off crush zones

3.  3” of weld onto frame to hold bumper on

4.  May chain or 9 wire bumper to core support

5.  Do not add any steel into frame


Mounts & Frames

1.  No welding anywhere other than locations specified

2.  Do not change any body mounts

3.  No added steel anywhere on or in frame



1.  May be tied down in 6 spots

2.  2 may be no bigger than ¾” threaded rod welded to top of frame (sheet metal only)

3.  4 others may be chained or 9 wire

4.  Do not run threaded rod through frame



1.  Drivers door may be welded solid

2.  all other doors may have 9 wire or chain at 3 locations



1.  4 spots 9 wire or chain


PAY OUT                                                              LESS THAN 10 CARS

1ST $2000 + trophy                                          1st $800 + trophy

2nd $ 1000 + trophy                                         2nd $400 + trophy

3rd $ 500 + trophy                                            3rd $100 + trophy                                                                                                            




If it is not stated in the rules, don’t do It! Please call with any questions.

4cyl or 6cyl only, no v8’S. No full frame cars allowed. Rear wheel drive ok, any year ok.



1.       All seat belts must work

2.       All air bags must be unhooked before show.



1.       You may body shape but do not fold or double metal, you can repair sheet metal rust but must be repaired with same thickness of metal, do not cut out rust, you must overlap! Leave the rust there.

2.       DO NOT WELD ANY BODY SEAMS. You can plate outside or inside of frame rail firewall forward. Not both sides. These plates may be 3/8” thick, same width of rail.

3.       You can trim wheel well for clearance and add 5- 3/8 bolts in fender.



1.       You are allowed to weld doors 5 inches on 5 off. You can use 3-inch-wide, ¼” thick plate on every door seam. You are allowed only 1 plate.

2.       Drivers door may be welded solid.



1.       You can have 6 hold downs on hood up to 1-inch rod. All 6 may go to frame. Only 2 may go to sub. You can run front 2 through sub mounts.

2.       Must have a 12-inch hole in hood for fires. You can have 12 3/8” bolts to hold skin together around each hole u cut.



1.       Trunks may be welded 5 on 5 off 3-inch-wide, ¼” thick plates and you can have 4 1-inch rods. All 4 rods may go to rail. (through or welded is ok)

2.       You may tuck your trunk with a single 90° bend, must be 50% stock.

3.       No wedging of trunk, quarter panels must be upright! No ramping effect.

4.       Do not remove rear speaker deck. (Station wagons can secure tailgate same as trunk but no threaded rod in the back of a wagon at all).



1.       You must have chain or straps in your windshield. Can go from roof to bottom of window sheet metal. May be bolted or welded.

2.       Rear window bars must be attached to roof and split trunk seam with a 6 x6 plate. Do not run window bar to floor. Do not attach window bar to rollover loop! You may have 4 loops of #9 wire in each window opening (do not attach it to your cage)


Motor and trans

1.       Trans cooler ok

2.       You can use any motor you like, must be 4 or 6cyl only no v8’s.

3.       You can have headers and a carb set up.

4.       You can have engine cradle and trans protector.

5.       You can have carb and header protection, do not attach protectors to cage.

6.       Do not weld any kickers off of cradle.

7.       You can beat your fire wall for clearance.

8.       Motors mounts may be mounted solid with a welded strap or square tube.



1.       You may reinforce tie rods, aftermarket ok.

2.       You can reinforce struts and weld your suspension solid.  

3.       After-market pedals, steering column, shifter ok!



1.       DO NOT weld on your cradle or frame unless specified!!

2.       You can replace body mounts.

3.       You can chain your sub to frame.



1.       You can use any tire and rim you want!



1.       You may have a 4- point cage with a rollover loop.

2.       Rollover bar must be straight up and down, not angled. You can weld it to the roof with 12 inches of weld in the center of the roof only.

3.       You can have 2 down bars on drivers’ side only, may be welded to the floor. Down bars must be in the front door area only, don’t go past the door, front or back.

4.       No kickers off of cage at all. CAGE material must be no larger than 6x6.

5.       Must be 8 inches off of floor (the entire cage)

6.       You may have 2 straps 3-inch-wide, 3/8” thick from front bar to top side of firewall.



1.       You must remove factory tank and replace it with a boat tank or something similar.

2.       Tank must be in the center of the back-seat area or behind driver seat.

3.       Must be secured properly (No seat belts, plumbers’ tape, or chain)

4.       If you are running a gas tank protector, the tank must be in it!!!

5.       Protector can only be 2 inches wider than the tank and must be secured well. You can have your tank protector tight to the rear package area.


7.       Do not weld or attached it to any sheet metal, must be floating off of rear seat bar.

8.       You can have bars off the back protector that go straight up to protect tank.



1.       Must be moved to the inside of car and secured on the floor or in the cage.



2.       You may use any automotive bumper on the front only.

3.       Rear bumpers must be stock or removed.

4.       Bumpers may be seam welded and have any holes welded shut. Loaded ok. Or u may use up to 4x6 3/8 thick square tube.

5.       No excessive homemade bumpers.

6.       If using stock shocks, you may push them in and weld. You can weld shock to bumper and weld shock to car.

7.       You can also remove shocks and replace them with tubing no larger than frame opening. You get 8 inches if tube, we will measure 8 inches from back of bumper and drill holes. You can run your 2 front rods through the tube and front body mounts.

8.       Weld bumpers on good, we don’t want them to fall off!

9.       You can have 2 - ¼ inch thick 3-inch-wide straps from top of core support to top of bumper or you may use #9 in 2 spots.




PAY OUT                                                              LESS THAN 10 CARS

1ST $1200 + trophy                                          1st $1200 + trophy

2nd $ 600 + trophy                                            2nd $600 + trophy

3rd $ 300 + trophy                                            3rd $200 + trophy




General Rules

1.       All #9 wire used can only be 3 strands, and chain maximum size of 7/16”

2.       If not specified in rules don’t assume you can do it, call first.

3.       Must remain stock unless specified in rules.



1.       Any Engine/Transmission combination may be used.

2.       Allowed: Braced rear ends, pinion brakes, aftermarket axles, slider driveshafts, engine cradles, weld in centers for rims, tranny coolers, aftermarket gas pedals, brake pedals (may not strengthen car), shifters, distributor clamps, radiator barrels, carb protectors.

3.       Not allowed: distributor protectors, mid plates, transmission braces, steel bellhousings, steel tail shafts.

4.       May use one 2x2x1/4” piece of square tubing for a crossmember, must go straight across from frame rail to frame rail, no kickers off of crossmember. Crossmember may be welded or bolted into place. May mount crossmember on top of 1 3”x3”x6” piece of angle iron on both ends. Nothing else can be attached to crossmember besides transmission mount.

5.       May swap rear ends from car to car, no leafing of a non-leafed car. May lengthen/shorten control arms to gain correct pinion angle, may cut an overlap a max of 1”, Watts conversion are fine long as bolted in on top, lowers ay be welded in only 4 inches of total weld per side, can not reinforce the car in any way.

6.       Engines may be welded in the engine saddle with mounts and extra 2-1/4 4x4

7.       May use any air-filled tire. No solid, doubled tires are ok.  May use washers, large lug nuts and wheel studs. Must remove wheel weights.

8.       May cut fire wall for dust to pass through.

9.       Radiator barrel may be used. Must be secured using no more than 4 3/8” diameter bolts connected to top and bottom of core support only.  Cannot be connected to the frame or gusseted to core supported threaded rod in any way.  Must have at least 1” gap between barrel and frame on both sides. Barrel must have psi relief. (Can use a rad protector also)

10.   If running a carb protector to your headers your hood must be cut out enough to not interfere with the bending of the car. Hood cannot be bolted to carb protector.

11.   If running an ’03 or newer ford, the engine must be put in using brackets that cannot be welded to the frame in any way. Use maximum 6”x6”x12”x1/4” angle iron and bolt them to the top two A arm bolts. You can weld steel off of those to create a surface for your motor mounts to be welded to. No solid lower motor mounts.

Gas Tank/Battery Box

1.       Stock gas tanks must be removed. 10-gallon max fuel tank must be strapped securely in backseat of car, no bungee straps. Must be properly covered with non-flammable material and cannot be connected to frame in any way.

2.       Battery box must be placed on the passenger’s side floorboard and properly secured to sheet metal only. Must be covered with non-flammable material. 2 batteries allowed.


1.       May run aftermarket steering column. May add U-joints to stock columns.

2.       No aftermarket spindles, A-arms, ball joints, idler arms, center links, pitman arms or homemade shocks.  May swap steering boxes as long as they bolt on. All steering components from the steering box to the spindle must be stock and not reinforced in any way except tie rods. Can strengthen or run aftermarket tie rods.

3.       Sway bar must be bolted.

4.       Suspension may be welded or bolted. If welding suspension you must use maximum of 2x4 1/4 strap, 2 per A arms (tops only!!)

5.       Control arms may not be strengthened in any way.

6.       Rear coil springs may be doubled.

7.       May run 1 chain per side around rear end and up to package tray.

8.       No adding of leaf spring clamps or leaf springs to leaf spring cars.

9.       Stock shocks only. No homemade shocks or filling of shocks is allowed.

10.   May swap A arms from car to car as long as they bolt on using factory mounts. No modifying of factory A arm frame mounts allowed.

11.   ’03 and newer fords must run factory steering and suspension components unless specified in the rules.


1.       May use any OEM factory bumper from any year car. Bumpers may be seam welded and loaded. No adding of points to factory bumpers.

2.       May use 5”x5”x1/4” maximum square tubing for a bumper. No added steel just a plain piece of square tubing. May cap the ends but must have inspection holes on both ends of bumper, must be able to see through. No longer than factory bumper. Must be completely straight.

3.       May run any bumper shocks or 3/8 4-inch-tall plates. Can’t take shock and bracket off and use both in different places. Shocks and brackets must be factory. Max of 10 inches back from bumper.

4.       Bumpers/shocks may be welded or bolted on. No adding of metal to do so. No welds further back than 4” from bumper for plug weld.

5.       Hard nosing is allowed. Only shorten to the core mount.

6.       May have chain or wire in two places but not both to help hold on front and back bumpers. No welding anything to the frame.

7.       No plating, loading, or filling of frames allowed.

8.       No frame seam welding or any welding to the frame unless specified in the rules!!

9.       Pre-ran cars can plate the bends. Total of 4 6x6 ¼ plates/can’t cut plate up and use half here, half there, must stay full 6x6. After 4, build a fresh car!

10.   Peening of rear humps is allowed, no other frame shaping allowed.  1 foot of peening on center maximum.

11.   Tilting or cold tilting of cars is allowed. At boxes on tilting stock mounts are still needed.

12.   Humps may be wired or chained together in 1 spot.

13.   May run 4 chains or wire (not both) going around the frame per side, cannot be connected to cage. Can only be done between the firewall and package tray inside of car.

14.   Body mounts if running stock bolts and mounts you may add up to 4 vertical ¾ body mounts 8 inches long. If you change body mounts you must have 1-inch puck in ¾ max rod. (no extra mounts other than factory change out) *both can change the core mounts to ¾ inch*

15.   May notch and pre-bend rear frame rails.

16.   Cars may shorten front frame rails to the core support, core support body mount tab on frame must be left intact and in stock location.

17.   No other welding on the frame unless specified in the rules!!

Cage/Driver Safety

1.       Cage material maximum of 6” diameter material. Cage cannot connect to frame.

2.       4-point cage allowed. Cannot be done in a way that strengthens the frame in any way. Door bars may not run further forward than firewall and must not go further back than the middle of back doors.

3.       May have 4 down bars going from the cage to the floor and not through the floor, down bars to be welded to sheet metal only, no plates between down bar and sheet metal allowed.

4.       Gas tank protectors are allowed, cannot be connected to package tray or body. Must come off of backseat bar, cannot be connected to halo. Must be narrower than frame rails at the package tray (humps). No beating of sheet metal to get closer to package tray.

5.       Halo bars allowed, if running halo bar to the floor that counts as two down bars, cannot be connected to frame. May be bolted to roof in two spots.

6.       You may strap your dash bar with 2” x ¼” metal from dash bar to cowl (firewall) in 4 places, no more than 2” of weld on cowl.

7.       May run driver window netting in driver’s window only.

8.       Front window bar must go from cowl to roof only, cannot be connected to cage.  Maximum of 4” weld on cowl and cannot be used to strengthen car.

9.       May also run one bar in rear window track ¼” x 3” wide (may be flat, round, or square) welded or bolted within 6” max of rear window track and no fasten plate larger than 4” diameter. Ran from roof to trunk lid only.  No raising of the roof, roof must be in stock location.


1.       Doors may be chained/wired or welded shut. 2 chains or patches per door sea, patches a maximum of 4” x 4” x ¼”.  Driver’s door may be welded solid.

2.       No creasing, welding or bolting of body seams unless specified.

3.       Speaker deck/trunk may be dished a maximum of 4” from factory location. Use a straight piece of material to check your measurement. Rear quarter panels may also be dished and creased.

4.       Trunks may be tucked

5.       Trunks may be held down in 6 places with bolts, chains, or patches. Patches may not be larger than 4” x 4” x ¼”. Bolts must go from sheet metal to sheet metal only. Two bolts may run to trunk floor to the frame, the other four must be connected to the trunk lid lip. Maximum of ¾” sized bolts. Washers for bolts a maximum size of 4” x 4” x ¼”. 2 only connected to frame.

6.       Hood may be held down in 6 locations maximum.  Can be chained/wired or bolted.  Maximum of ¾” bolts. Hood hinges DO NOT count against you for these locations.  Maximum 3”x3”x1/4” angle iron may be welded to fenders or top of hood to bolt your hood down.

7.       May run ¾” threaded rod through core support mounts and through hood. This counts as 2 of your 6 hood hold downs. No other hood hold downs can be connected to the frame. Maximum height between core support and frame is 4”. No welding of rod or spacer to core support or frame.

8.       May use up to 4 3/8” diameter bolts to bolt front clip together in areas of your choosing. Sheet metal to sheet metal only, no added steel or relocating of factory brackets to strengthen.

9.       Rear wheel wells may be bolted together in 4 spots with bolts no bigger than 3/8” diameter.

10.   No shortening of front clip or relocating of core support.

11.   Hood can have a maximum of 8 3/8” bolts in it to hold the hood seam together.



PAY OUT                                                              LESS THAN 10 CARS

1ST $2000 + trophy                                          1st $1500 + trophy

2nd $1000 + trophy                                          2nd $ 700 + trophy

3rd $ 500 + trophy                                            3rd $ 300 + trophy





NO refunds on entries or pit passes.  Vehicles that don't pass inspection a 2nd time will be loaded.

If it's not in the rules, it does not mean you can do it.
Any questions, CALL FIRST don’t assume anything.

Adam 715-790-0044 or Greg 715-338-5864