Your Country Fair
September 9, 10 & 11, 2022
Uxbridge Fall Fair,
180 Main St. S, Elgin Park, Uxbridge, ON

Demolition Derby Rules Pro Stock V8

Demolition Derby General Rules 2022 Pro Stock V8

The Demolition Derby will be held on Sept. 10th 2022, in Elgin Park Uxbridge starting at 7:00p.m. Sharp.

In the event that this Derby is cancelled, the Uxbridge –Scott Agricultural Society and the Township of Uxbridge will not be liable. There is no rain date.

These rules replace all previously issued rules and are subject to change without notice.

General Information

Please arrive early. Admission to the Fair includes admission for spectators to this event, but does not guarantee parking on site or seating.

Note: As in all high risk events everyone entering the fairgrounds does so at your own risk.

In the interest of public safety, the safety of the registered drivers and pit crew, and the Fair staff, all persons are subject to and must obey the following rules, regulations and directions of the Fair officials as set up by the Uxbridge –Scott Agricultural Society. (The Fair)

Restrictions for all Spectators and Participants

The risk of personal injury at this event is high. The Fair endeavours to put in place the current rules, essential emergency services, equipment and restrictions as deemed appropriate. Individuals with health issues or are pregnant should not participate as a driver or pit crew.

THIS EVENT IS AN ALCOHOL, DRUG FREE EVENT. Police and Security Personnel will be on hand to deal with any issues relating to inappropriate behaviour, alcohol or drug issues on the Fair property and the surrounding area.

Security Personnel and Fair staff members will enforce the following:

  1. Due to Insurance regulations, no one under the age of 18 will be provided a pit pass, even under parental supervision.
  2. Spectators are requested to sit in designated areas only, not to stand on the fence line and to respect safety zones and fencing.
  3. Safety Glasses and ear plugs highly recommended for spectators.
  4. During the event, which will be deemed to start at 4.p.m., only drivers and pit crew members, fair staff and volunteers wearing the PIT PASS WRISTBAND will be permitted in the Pit Area.
  5. All individuals in the Staging Area (Tower Area) must be approved by the Fair, sign the insurance waiver and wear the PIT PASS WRISTBANDS.
  6. While in the staging area, all individuals must stay in the designated areas, clear of all emergency service vehicles.
  7. Drivers are to stay with their vehicles at all times unless it is unsafe to do so.

Policy Information

The Goals behind these rules are three fold:

  1. To create an event that provides a safe environment for the drivers, volunteers and the spectators alike.
  2. To provide an equal opportunity for each driver to be successful by ensuring that the vehicles are of equal standing for competition.
  3. Since the show ring is being used for equine events the following day, we also need to ensure that the amount of debris left behind is minimal to reduce the possibility of injury to these animals and the handlers. Anything that may fall off, should be removed before the Derby starts.

Participant Information

 The Fall Fair, and the Township of Uxbridge and its members will not be held responsible for any personal injury relating to the running of this event, driving a vehicle in this event or being a pit crew member.

  1. The Fall Fair, and the Township of Uxbridge and its members will not be held responsible for any vehicles, trailers, parts or personal property, before during or after the event.
  2. Each vehicle, the driver and pit crew must be signed in and the vehicle must be ready for inspection by 4:00p.m. at the latest. The earlier the better.
  3. Drivers must be 18 years of age and older and holding a valid G Driver’s License.
  4. Each driver must complete an entry form. Only one registered driver per vehicle. No substitute drivers allowed. A photo ID is required for each individual registering.
  5. All drivers must attend the Drivers Meeting or be disqualified.
  6. All drivers must provide their own vehicle. Only one entry per person. Proof of ownership must be available.
  7. Registration fee is $55.00. This is not refundable.
  8. 1 driver pit pass and 1 pit crew pit pass will be issued for each car. 1 additional crew pit pass may be purchased for $10.00. Liability release must be signed. ( note age restriction rule 1)


Driver Safety and Running Rules

  1. Seat Belts, helmets with chin straps, gloves or face shield are mandatory. No bare skin. Neck, or other braces highly recommended. Work boots highly recommended.
  2. No deliberate head on collisions or hitting of driver’s door safety area.
  3. All vehicles must have dependable brakes and seat belts at all times.
  4. No vehicles are to enter the staging area or competition area until directed to do so by the TRACK OFFICIALS.
  5. If a driver’s door opens during competition, the vehicle will be immediately disqualified. The driver is to remain in the vehicle until the heat is over or the heat is stopped to allow a safe exit.
  6. The Fair expects all competitors to be actively involved in aggressive combat. A one minute time limit is strongly enforced by the TRACK officials with respect to sandbagging. Sandbagging will result in disqualification. No team involvement unless specified in a class.
  7. All derby vehicles left on the property past midnight will be disposed of by THE FAIR WITH ANY COST TO BE PAID BY THE OWNER OF THE VEHICLE.
  8. A $75 protest fee, up front, from a registered driver only is required to contest any results or ruling of an official’s decision, up front.
  9. This is not a team event, unless specified. Those acting as a team will be disqualified.
  10. In case of an emergency, the Track Officials will attempt to shut down the competition as quickly as possible. It is the drivers’ responsibility to respond as quickly as possible to directions. It may be your car on fire.


2022 Pro stock V8 Class Vehicle Prep Rules 

Vehicles Allowed

  1. Most 6 or 8 cyl hardtop or station wagons. 6 cyl cars must have a wheel base of 109” or 276.86 cm or larger. No Trucks, convertibles, jeeps, vans, limousines, imperials or checker cabs.
  2. Cars previously run in derbies MAY be considered too badly damaged and unsafe, resulting in disqualification. Call or email with pictures first.
  3. As in all Uxbridge classes, a vehicle ownership must be on hand in case of vehicle year, engine, make or model issues.


Vehicle Prep

  1. Preparation of the vehicle must occur before the vehicle arrives at “The Fairgrounds”. This includes painting of the frame repairs as outlined.
  2. All repairs must be with stock style components. No reinforcing.
  3. All flammable material must be removed from the cab area except the dash, driver’s seat and seat belt. All debris, including in the doors, trunk and passenger area must be removed.
  4. Front and rear bumper covers must be removed
  5. All air bags to be removed.
  6. ALL Trailer hitches to be removed.
  7. All glass, windows, mirrors, trim, lights, antennas, ornaments, bezels, bulbs, interior and exterior must be removed.
  8. The AC system must be drained.
  9. The cooling system must be flushed of antifreeze and replaced with water only. Radiator to be in its original position or removed. The over flow tube must be secured to direct the coolant to the ground. No additional protection except stock AC condenser. No reinforcements or guards. Stock type radiators only.
  10. All doors must be fastened shut with wire, straps, chains or seat belt material. In a max of 8 spots using 3×3 ¼” plates, 16 total on a 4 door car. The driver’s door may be welded solid. If wire is going to be used to tie the doors shut by going around the frame you are limited to 1 spot.

Front doors to be painted white, with number. (For ease of seeing the number). An optional roof number plate may be securely installed.

Outside of the car may have a 12” x 60” x ¼” max steel plate applied to the drivers and passengers door, bolted in 6 locations with a max of ¾”  bolts. No C channel or angle iron. The driver’s door can be reinforced in any form but not to reinforce the frame.

  1. A CSA approved fire extinguisher, with properly functioning gauge, (ABC) must be properly secured within reach of the driver. This will be checked before entry to the ring.
  2. A 12 volt battery must be properly secured to the front passenger floor board area in a box. Battery box not to be attached to the frame or reinforce the floor. No self-tapping screws. This area must be clear of all fuel system parts. Once the inspection has been completed, this battery will be covered with a non- flammable material, shield to control possible splashes. No milk crates. Max 2 batteries.
  3. The stock fuel tank must be removed with all loose fuel lines and straps. It is to be replaced with a CSA approved, steel marine fuel tank, custom fuel tank or racing fuel cell.  An approved fuel tank must be bolted down in the middle of the rear seat area.  This tank must be covered with a non-flammable cover after inspection. No fuel tank movement can occur during inspection. Gas tank protectors ( GTP) allowed. GTP can be 24” wide and no taller than the speaker tray on a sedan, on a wagon it must end before the diff hump and be no taller than the top of the doors. GTP may touch sheet metal . No plastic fuel cells.


  1. ALL fuel lines must have leak proof fittings with steel or rubber lines, no clear lines. Lines must be run inside the car properly secured. Lines must be away from the battery area. All connections to have clamps. Leaks will result in disqualification.


  1. The fuel pump must have a safety shut off switch, marked in red, on the roof in the center of the windshield area for officials to use if needed. This switch is mandatory for fuel injected cars only and must be visible from 20’ by officials/flagmen. The electric fuel pump must be isolated with a non-flammable material covering


  1. Bracing. Use a single roll bar straight up each door frame across the outside of the roof. Roll bars can be bolted in 2 places through the roof, not welded. A seat bar can be bolted or welded behind back seat from side to side to protect the driver. NO excessive use of materials. Not mandatory. Seat roll bars not to extend past back of driver’s seat. Bar over roof cannot be attached to any other bar on the car except the rear seat bar. 2 down bars to frame, floor or inside rocker are allowed within 8” of post to post bar, no kickers. A dash bar can also be added and be connected to the post to post bar creating a square or 4 point cage around the driver. Dash bar must be 5” away from the center of the firewall. One square tube can run between the seat bar and the dash bar to mount the shifter on. Gussets will be allowed in the corners of the cage no more than 6” from corner to corner. If you cannot weld, bolt. Cage Must be safe or you will be asked to remove it.  No limit on driver’s door protection between door seams.


  1. WELDING Only within guidelines outlined. No exceptions.
  2. Hoods are not mandatory. If a hood is not used an electric fan is mandatory, belt driven fan removed. Hoods require a 12” opening in the center of the hood. Hoods must remain open for the inspection. Hoods will be fastened down in a maximum of 8 places using, seatbelt strap material, chain, wire, 2x2x2 angle iron bolted down. Hoods/rad supports can be wired to the bumper in 2 spots. Hoods must remain open until after the inspection.

NOTE: Hoods are not mandatory, however if removed, the safety of the drivers and fair volunteers become an issue with hot fluids. All precautions must be taken to direct hot fluids to the ground in case of an overheated engine, transmission or steering system.

  1. Tailgates/trunks. Trunks must be stock. Trunks may be tucked. Trunks/tailgates must be fastened down in a max of 8 places with wire, chain, seatbelt material, or welded with 3×3 ¼” plates. Trunk may have 2 spots max of threaded rod holding the trunk closed through an existing body mount. Trunk may be wired to rear bumper in 2 places.
  2. Bumpers Front bumpers may be left stock or can be changed to any factory car bumper. Manufactured front bumpers are allowed if they follow the same exact factory dimensions of the bumper they replicate. Bumpers may be seam welded or loaded. If you choose to run a piece of square tube as a bumper it may be no larger than 4”x4” or 3”x5” and no thicker than 3/8” and can only be 4” wider than the outside of the frame. If the ends of the bumper are cut and bent at 45 degrees the bumper may be as wide as the front tires. Square tube must remain flat, you cannot build a point. You will be allowed to do whatever you need to do to keep the bumper on the frame 6” from the back of the bumper. No metal inside or outside the frame 6” from the back of the bumper. Factory bumper shocks must be in stock location or removed. Do not abuse this rule. Rear bumpers must be a stock car bumper. Front frame can be cut back to the front rad support. No relocating the rad. Front and rear bumpers must have two places of wire holding the bumper on, MANDITORY.
  3. All doors must be fastened shut with wire, seat belt straps, chains, bolted or welded with 3”x3” x 1/4” plates in 8 locations max per door. Driver’s door may be welded solid.
  4. Windshield Opening A steel bar or chain must be bolted or welded from the cowl to the roof in the front windshield opening to prevent the hood from coming in. “A or H” window bars are allowed no wider than 18”. NO Full window cages.

Rear window bars are allowed, max 2x2x1/4” bar or 3” wide 3/8” strap may be used, mounted 6” onto the roof and 6” onto the center of the trunk area, not the floor or frame. The mounting points limited to a max of 6×6”plate.

  1. All holes or openings in the firewall must be filled/ covered with sheet metal or non-flammable material.
  2. Transmission cooler can be placed inside the car in a safe place. NO leaks. Slider shafts allowed.
  3. Suspension, Steering. The suspension must remain stock. It is recommended that the rear coil springs be wired/welded to the differential. Screw in style spacers are allowed. No loading of the spring pockets. Gears may be welded. Steering columns can be aftermarket. NO reinforcing allowed other than tie rod ends. You may use aftermarket ball joints as long as it is mounted as factory in the control arm. Front A arms can be welded down with chain (one link welded to the A arm and one to the frame on the front and back of the A arm) or may weld down with 2, 2”x6”x ¼” plates

Basic Watts Link conversions may be used, nothing excessive or   deemed to be reinforced. This may be requested to be cut out.  After market or double rear arms allowed.

  1. Any differential may be used max 8 lug. Differential may be braced. There must be at least 6” from the diff to hump in any direction. Diff brace not to fill the hump to reinforce the hump. No chains on the rear end. Leaf spring cars are limited to 4 leaf spring clamps in total, per leaf pack (2” wide x ¼” thick) Leaf spring cars must sit on stock style leaf perches.
  2. 30. Frames A total of 6, 4”x4” repairs can be added to bent frames. Over repaired frames will be asked to be cut or may result in disqualification. Must be 3” between repair plates. All repairs must be painted in a bright colour and reported to the officials before inspection. Frame may be tilted in 1 spot. No metal added where the frame is tilted. No hump plates. No welding two different styles of frames together. Crush box taps not to be welded. No seam welding. Rear frames may be notched.
  3. Radiators and Cooling systems must be flushed of anti-freeze and only water added. Overflows for radiators must be secured and pointed down. Radiators must be mounted in the original position or removed. Rad screens may be used (max 1/8”expanded steel) welded to the rad support only, no more than 1” wider than the rad opening. Stock AC condensers allowed in original position. No metal may be added around the rad for reinforcement
  4. Use stock engine and transmission mounts. No reinforcing motor mounts. No chaining motors
  5. Inspect fully all seat mounts and frame. A broken seat may result in disqualification.
  6. A single roll bar up each door frame, inside or across outside of the roof may be used. Roll bars going across the roof can be bolted twice through the roof for driver safety. This roll bar may be welded or bolted down to the seat bar only, not to the frame or floor. A seat bar of 3”x3” max can be bolted or welded behind the seat back from side to side to protect the driver. No excessive use of materials. Not mandatory. Seat/roll bars not to extend past back of driver’s seat. The bar over the roof cannot be attached to any other bars on the car except the rear seat bar. You may have 2 down bars bolted to the floor, not the rocker/frame. “Feet” for the down bars are to be no larger than 5”x5”. No dash bar. No passenger side bar.
  7. All drive tires must be filled with air only. All wheel weights must be removed. No split rims. No screwing of tires to rims or studding. No triple side walls are permitted on drive tires.

No excessively aggressive tread types. May use weld in centers on a stock rim to change bolt pattern. No homemade rims. Non drive tires can be solid rubber, foam filled

  1. Motor Mounts Aftermarket mounts are ok, no bigger than factory, bolted not welded. Motor mounts may be chained. If using a lower cradle, it must still bolt to frame mounts.  Transmission cross members can be stock or replaced with 2”x2” tubing.  If changing the transmission cross member, it is to be bolted in with 1 bolt ½” dia. per side you may have 6” of 2”x2” x1/4” angle, welded to the frame to mount cross member. If you choose to weld your cross member , you can do so between the frame rails, cross member to be straight across, no added material, no gussets.  Transmission brace not to be welded to the cross member. Transmission to be bolted to the cross member.
  2. Body mounts may be replaced with ¾”threaded rod with 3” x 3” washers. No extra bolts. Factory rubber mounts may be replaced with 1’” rubber hockey pucks. Core support spacers may be replaced with2”x2” tube, welded to the factory body mount bracket on frame, not down the side of the frame. Not to extend to the roof on a wagon.
  3. All mechanical repairs must be stock material and in no way enhance the ability or performance of the vehicle.
  4. Engines can be interchanged. GM in Ford etc. NO FULL engine cradles. Distributor Protectors/ LS coil guards are allowed fastened onto the motor (not the cradle) protecting the distributor only. If using a distributor protector it must be 1” from a fresh firewall. Distributor protector can be a max of 12” wide. If you are using a distributor protector you cannot use a transmission brace, one or the other only. Transmission may be braced if you are not using a distributor protector. Aftermarket pedals and shifters are allowed. Slider shafts are allowed. Lower engine cradles are allowed as part of the engine mounts, not to reinforce the car or driveline. The cradle is not to touch the frame or cross member. Pulley protectors are allowed.
  5. Shifters may be directly attached to the transmission linkage and relocated through the floor over transmission hump.
  6. Pre –bending/ Body panels The frame may be pre-bent within reason. No “frame shaping”. Body creasing/bending limited to rear quarter panels. Front and rear body panels may be bolted with a max of 5, 3/8” bolts with ½”washers. Body patching/repairing is limited to driver’s compartment floorboards only. To be repaired with the same gauge material as factory, to repair rust only. No welding creases together.



2003 + Fords A bolt in cross member is allowed with strict ruling. Cross member must be constructed from a 1980 + car cross member.  All control arms, steering box, spindles, ball joints, etc. must be from 1980+ cars. No added metal to mount the steering box or idler arm. Allowed to use 3/16” thick angle iron placed on top of the frame no longer than 14” and bolted in 4 places TOTAL using the factory nuts on the frame with stock sized bolts. If deemed reinforcement the car will be cut or loaded.


Metric GM 1977+    These vehicles can have a rear leaf spring conversion. You may have a total of 5 leafs with factory style stagger. Only 1 main leaf, no flipping leafs or “flat stacking”

Front mounts can be 4”x4” tube 4” long welded to the bottom of the frame. Rear mount must be a shackle. Shackle may be bolted, max 5/8” bolt, to or through the rear frame with a max 2”x2”x1/4” washer. The washer may be welded to the frame. Suspension movement must occur with one person’s effort.