DISCLAIMER
The rules and/or specifications set forth herein are designed to provide for the orderly conduct of racing events and to establish minimum acceptable requirements for such events. By making application for a competitor permit, it is deemed that the competitor agrees to become familiar with these regulations and abide by the directions set forth and prescribed by Management. No express or implied warranty of safety shall result from publications of, or compliance with these rules and/or specifications. They are intended as a guide for conduct of the sport and are in no way a guarantee against injury or death to participants, spectators or others.

THE INTERPRETATION OF THESE RULES WILL BE SOLELY THE JUDGMENT OF THE
TRACK OFFICIALS & TECH STAFF IN CHARGE AND THEIR DECISION WILL BE FINAL

Any part of the car not specifically mentioned or covered in these rules must remain STOCK. Stock parts are those found in the OEM PARTS BOOK (original equipment manufacturer), not those found in high performance or off-road racing books.

Any cars being teched will be allowed to have only one driver and two mechanics present in the tech area – no one else will be allowed. Any harassment from any driver and/or crew member to the tech staff (or any other track official) may result in an automatic disqualification, thus forfeiting all points earned that night and all money earned at that race meet.

DECISION OF TRACK OFFICIAL IS FINAL
ONCE DISQUALIFIED YOU WILL REMAIN DISQUALIFIED

Abiding by the following set of rules will enable everyone concerned to make the upcoming race season at BARRIE SPEEDWAY a more enjoyable event for all those involved.

REMEMBER: STOCK MEANS STOCK - NO EXCEPTIONS!

TECHNICAL SPECIFICATIONS
The word stock when used herein, shall mean unaltered, as factory available and produced by the OEM for the make, model and year of the car being raced. That excludes all aftermarket “High Performance” parts, and all decisions and rulings shall be based on data obtained from the Canadian Service Data Book and other OEM Specification Book.

The Thunder Car division is open to any approved make of North American built automobile having a factory listed wheel base of 108” or more for the make, model and year being raced. No convertibles, four-wheel drive vehicles, trucks or station wagons will be allowed.

BODY AND APPEARANCE 
Body must be stock in appearance to the original vehicle with no chopping, channeling or sectioning allowed. Fenders and doors may be fabricated using a minimum of 22 gauge sheet metal. Must look completely original and must meet approval of tech if fabricated. Hoods must be flat and remain flat while racing. Body must be complete with all doors, fenders, quarter panels, hood, trunk and roof as well as both bumpers. All chrome moldings, door handles, nameplates and lights must be removed. All doors must be welded or bolted shut to the satisfaction of the tech inspector.

Inner splash aprons in the front fenders may be removed. Headlamps and tail lamps must be replaced with sheet metal filler.
Absolutely no bars shall extend outside of body panel including the grille and bumper, with the exception of side scrub rails. Scrub rails cannot extend any further forward than rear of front wheel opening, and no further rearward than front of rear wheel opening. (No sharp edges.) Maximum 1” x2” welded or bolted to the roll cage. Mounts must be within 6” of front and rear of scrub rail . Carriage bolts only on scrub rails. Must be mounted on or above front and rear wheel centerline. If bolts are countersunk, maximum hole size is 1”.

Cars must not be excessively rusty and must be presentable in appearance. Body and appearance will be strictly enforced and scrutinized by track officials at all times. The tech committee will reject cars that are considered unsafe or improperly prepared.

BUMPERS
Bumpers must match body width. Approved racing plastic bumper covers allowed. No external reinforcing is permitted. Bumpers must be mounted in stock position with no sharp edges exposed. No cut-offs. Bumper shocks may be welded. Chrome steel type bumpers must be welded and chained, to prevent bumpers from falling off onto the race surface and creating a hazardous condition during a race meet.

INTERIOR
All upholstery materials, trim and padding must be removed. The front and rear firewalls must have all holes and openings filled with sheet metal. NO SHEET METALS SCREWS TO BE USED. Pop rivets or welding/brazing only.

Option 1:
If original transmission tunnel and firewalls are retained passenger side floor may start from top of transmission tunnel and run straight across to passenger door and must be made of minimum 22 gauge steel.

Option 2:
(a) Centre of car to left side front firewall down to floor must be retained. Passenger side of firewall may be moved as far back as front of roll cage. Minimum 22 gauge steel.

(b) Rear firewall – a metal firewall min. 22 gauge steel must be fitted over the rear seat back brace and the top shelf behind the driver’s seat to completely close off the trunk compartment.

(c) All sheet metal work must be neat and properly fitted. All holes are to be covered with sheet metal, either welded or riveted.

(d) Floor must be complete and have all holes covered with sheet metal. Step up over transmission tunnel can be a maximum height of 10” from top of frame rail and straight across to passenger door min. 22 gauge steel.

Seat and seat belts must be firmly mounted to the cage or the chassis of the car. (See Safety Equipment for installation)

No fuel or brake lines or fuel filters permitted in the driver’s compartment. Interior mirror is permitted.

All windows and glass except for front windshield must be removed. No screens or half windshields. Windshields may be Lexan or safety glass with a minimum of 4 safety clips. (No Plexiglas allowed.) When using Lexan, two windshield center braces are mandatory. Windows to be clear of tint. Only factory tinted windshield glass permitted. No obstruction of the drivers view on the front or rear windshield area except for the top 4’ of the front windshield for a sponsor decal.

ROLL CAGE (MANDATORY)
1. Minimum roll cage requirement. (See diagram on back page.)
2. Cage must be 1 3/4” minimum outside diameter with .095” wall thickness (minimum).
3. Base of uprights must be electric welded to frame of car.
4. Unibody cars must have sub frame connectors. Minimum 2”x3”. .095” square tubing for roll cage to be mounted on.
5. In a Unibody car, the rear upright bars must be connected by a side to side member just above floor pan.
6. Cage shall be braced to the rear frame kick-ups and diagonally between the rear uprights.
7. Full roll cage allowed from firewall back to rear frame rails. Rear and front hoops allowed.
8. All welds must be properly gussets of no less than .095” thick. No pipefittings allowed.
9. All roll bars in the driver’s area must be properly padded and taped.
10. Left leg protection MUST be installed between roll cage and left front frame rail.

ALL WELDS WILL BE SUBJECT TO THE APPROVAL OF THE TECH INSPECTOR

LETTERING
Only those cars who are entered as registered members of the Barrie Speedway Thunder Car Division are permitted to pre-number their car. Numbers of members must be on the roof reading from the passenger side and in the center of each door, in large (minimum 24”) letters in a colour that clearly contrasts the paint job on the car. Sponsor’s names and logos may be placed on any other place on the car. NO FOIL NUMBERS – NO SILVER OR GOLD NUMBERS. Block type numbers 6” high, white in colour, must be displayed on the upper right hand side of the windshield to make it easier for line up purposes. Vulgar words and expressions are not permitted.

OPTIONAL SEALED GM CRATE ENGINES
1. All engines to be purchased through Barrie Speedway.
2. All engine repairs to be performed by Stefco Racing.
3. Pick up and delivery of engine is the owner's responsibility.
4. Engine must be resealed by a Barrie Speedway Official before it is released from Stefco Racing - $75.00 fee.
5. Any repairs completed by other than the approved source (Stefco), will be subject to re-inspection by Stefco and resealing by BSW officials.

Driver must supply intake manifold so that motors may be sealed. Motors will be delivered complete with 4 bolt main, supplied intake installed, 6 3/4” balancer, water pump, oil filter, spark plugs and circle track pan if supplied or ordered.

Absolutely no modifications are allowed. To be used only as delivered by Barrie Speedway.

This motor is to be used in conjunction with all other Barrie Thunder Car rules. Barrie Speedway reserves the right to confiscate any sealed motor for inspection. Anyone found tampering with a GM crate motor will be suspended for one calendar year.

ENGINES
All camshafts may have a maximum valve lift of .390”/.410”. There will be no head modification. Camshaft and cylinder heads will be strictly enforced. Chev: minimum 74cc combustion chamber. ENGINE MUST BE STOCK!  Maximum overbore of .060” allowed. Any GM model car may run a 350 CID engine, Chrysler a 360 CID engine, and Ford a 351 CID engine maximum. Wet sump (Circle Track) oil pan allowed. Must be steel only. Must fit in stock location. There will be no modification of chassis. Maximum intake top bore size 1.825”. Aluminum racing radiators are permitted. Must fit in stock location. Any aftermarket V belt pulley is allowed.

Eagle press fit 5.7’ replacement connecting rods are permitted. Part #SIR5700BPLW only.

ENGINE MOUNTS
O.E.M. or solid steel allowed. Engine location must remain stock. A tie down strap or chain from the left side of the engine to the frame rail is highly recommended.

CARBURETORS

Option A
Only one two barrel OEM carburetor is permitted. 1/4” maximum gasket thickness allowed. Choke accessories may be removed. No adapter plates allowed. No large throttle body carb allowed. Measuring tools will be used. Two throttle return springs (running in two different directions and throttle stop are mandatory. Accelerator pedal toe bar recommended.

Option B
One, two-barrel, Holley 500 CFM #4412 carburetor. The only changes allowed are jets, power valve squirters and removal of choke parts. A maximum 1 1/4” adapter plate, including gaskets, between the manifold and carburetor is allowed.

(1) Two throttle return springs running into different directions are mandatory. Throttle stops  mandatory. Accelerator toe bar recommended.

(2) The carburetor shall remain stock as produced with the exception of choke mechanism and external choke housing may be removed.

(3) Cars must have air cleaners to act as a flame arrestor (max. 4” x 15”). Must fit under the hood. A cold air box is permitted.
No Ram tubes or ducting allowed.

Air boxes are allowed maximum 20” wide with option A or B.

CYLINDER HEADS
• Stock OEM or World Products cast iron straight plug only. No after-market cylinder heads.
• No porting, polishing and/or relieving under valves.
• No angle milling.
• No special lightened valves. No titanium valves.
• No angle plug heads.
• No head with cast number 292.
• No Chev bow tie heads. No GM Vortex heads.
• The maximum valve sizes as measured across the face of the valves are as follows:
        - GM Intake – 1.94 Exhaust – 1.50 
        - Ford (Cleveland) Intake – 2.04 Exhaust – 1.65 
        - Ford (Windsor) Intake – 1.84 Exhaust – 1.64 
        - Chrysler Corp. Intake – 1.88 Exhaust – 1.60

• GM minimum 74cc after surfacing.
• Ford part number M6049L302-GT40 64cc after surfacing
• Chrysler minimum 64cc after surfacing. No W2 cylinder heads.
• Valve springs must fit into stock cylinder head spring seat. (No barrel springs)
• Rockers must be stock for engine.
• Screw in stud and guide plates allowed.
• Minimum of piston to cylinder head deck height .038” including gasket.
• World Products cylinder head allowed is part #043600 A or B casting #I-052.

Original cast iron exhaust manifolds only. No ram horn manifolds allowed. No aluminum intakes or headers permitted. No aftermarket high performance ignition systems permitted. Stock type Accel coil & module allowed. No roller rocker arms are permitted. No special external oil pumps or dry sump systems permitted. No electric fuel pumps.
IF IT ISN’T STOCK, IT ISN’T LEGAL – NO EXCEPTIONS!

DRIVELINE
Automatic transmissions only. No racing automatics. No special torque converters. Must have stock torque converter for transmission being run. Minimum 12” converter. No manual transmissions. Two-speed power glides are allowed in any make and model.

Driveshaft must have two 360” steel retaining loops minimum 1/4” x 2” positioned at the front and rear of driveshaft within 8” of the U-joint. No chains. Steel driveshafts only. Driveshafts must be painted white or fluorescent. No accessories may be driven off or attached to driveline.

REAR ENDS
Stock rear end with drum bakes or Ford 9” rear end with drum brakes allowed. Stock style axles only. Must have stock geometry suspension mounting points for chassis being used. Full steel spools allowed. Must be full diameter. No light weight allowed. Also steel mini spools allowed.

SUSPENSIONS AND FRAMES
All suspension and frame components must be stock for the make, model and year of the car, with no modifications. Suspension may be adjusted, but no components can be interchanged for those that are stock. No modification of stock suspension locating points allowed. Uni-body cars must install sub frame connectors. Frame height must be a minimum of 7” and will be measured without the driver. After-market racing shocks will be allowed but must be non rebuildable (except QA1 rebuildable FC series allowed), stock style steel shocks in stock locations with stock style mounts. Upper rear mounts and upper or lower front mounts may be extended straight up or down to accommodate ride height. Spec. shock may be determined in 2009. All steering columns must be of a collapsible type. Center of steering wheel hub must be heavily padded. Racing type springs allowed on front and rear of car. Must be minimum 5” diameter. Front spring adjusters permitted. Rear load bolts allowed. Rear frame rails may be replaced from rear end back with 2”x3”x.095” square tubing solidly welded. All stock mounts must remain unaltered. Sway bar link kits may be substituted with threaded rod. Full X may be installed between frame rails.

EXEMPTIONS: 
• One front lower control arm may modified in length to within 1’ of stock measurement. Other lower control arm must remain stock.
• Any GM stock spindle allowed on GM chassis. Must be used in pairs and must be symmetrical with a maximum rotor thickness of 1”. No mixing allowed.
• Steel braided brake lines allowed. 
• Tubular front upper control arms are allowed and must fit stock chassis mounts with no modifications to chassis.
• If stock upper control arms are used, ball joint may be repositioned on flat area of control arm with no other modifications. Stock ball joints only. No truck ball joints allowed.
• Brake proportioning valve allowed. Location is optional.
• Rear upper control arms may be fabricated from steel. Stock length and mounts only. Non adjustable.
• Tie rod adjuster sleeves may be after market steel sleeves and lock nuts.

EXHAUST
Exhaust pipes must exit to the outside of the car to the rear of the driver and ahead of the rear wheels. Exhaust pipes should be firmly mounted and have no sharp edges or protrude outside of the bodyline. Maximum exhaust not to exceed 2 1/4” O.D. 2 1/4” maximum I.D. inlet and outlet mufflers are mandatory.

FUEL CELL AND FUEL SYSTEM
The fuel cell must be separated from the driver’s compartment by an all metal firewall, and must be 20 gauge. There can be no openings in the firewall and any holes must be filled in with metal. No filler neck or fuel line is permitted inside of the driver’s compartment. Minimum of two steel square tubing or flat bar front to back and side to side. The fuel cell may be lowered in the trunk area. The bottom of the fuel cell may not be lower than center of the rear end tubes. The fuel cell must be centered between the frame rails. Plastic fuel cells must be placed in a metal container, minimum 20-gauge steel. There must be a minimum 1” gap between the fuel cell and steel enclosure to act as a crush area. A fuel cell rear protection hoop must be used. Minimum 1 3/4” x .095” tubing.

No external electric fuel pumps. All filler caps must be non-vented. No car will be permitted to run if any sign of fuel leakage is found. The trunk must have a quick release hold down. Ground strap from filler neck to chassis is mandatory! Trunk floor may be removed from rear firewall back. Fuel cell must be mounted securely as per above. One protection bar must be run horizontally above the fuel filler neck. Minimum 1 3/4” round tubing x .095” or 2” square tubing x .095”.

WHEELS 
No reverse or aluminum type rims permitted. STEEL ONLY! Maximum rim width bead to bead – 8”. Heavy duty or racing rims may be run on all four wheels. Heavy duty 5/8” wheel studs and nuts mandatory. Wheels stud threads must protrude through nuts. Racing wheels mandatory on right side. No wheel spacers allowed. Rim weight must be a minimum of 17 lbs. Tires and rims must not extend outside the body.

TIRES
Diamond Back tires and or Towel City Trac-Master as sold by Barrie Speedway.

WEIGHTS 
Car weights are 55% maximum left side and 50% maximum rear. All ballast weight must be mounted safely and securely, no lower than 7” ground clearance. If ballast weight is mounted behind rear end, it cannot be mounted lower than the bottom of, or rearward of, the fuel cell. All weight must be labeled with car number and painted white. Added weight must be in block form in no less than five-pound blocks. Cars will be weighed and teched after racing as they come off the racetrack with the driver in car without topping up fuel. No Substitutions.

Minimum weights: Cars with crate engines 3150 lbs, all other cars 3250 lbs.
 

SAFETY EQUIPMENT

1. BELT AND HARNESS
A quick release belt of not less than 3” in width and a 3” shoulder harness is compulsory. Belts must be securely fastened to the frame and/or roll cage, straight in the direction of line of pull, with grade 8 bolts of a Minimum diameter of 3/8”. Crotch V-belt or 5 point belt is mandatory.

2. SEAT
Aluminum racing seats only, headrest mandatory. Wrap around headrests on each side is recommended.

• Seats must be bolted to the seat frame or roll cage assembly. (See diagram.)
• Seat must be positioned to the left of the centerline of the car.
• No bolting of seat to the car floor.
• Use minimum 3/8” grade 8 bolts with large washers to hold racing seat to seat framework.
• Minimum of two (2) bolts on seat back and minimum of two (2) bolts on the seat bottom.

3. FIRE CONTROL
Cars must have a current year approved fire extinguisher mounted in an approved steel mounting bracket bolted down and within driver’s reach with seat belt fastened.

4. SAFETY HELMET
An approved racing type safety helmet must be worn at all times during all races and practices and until car is parked in pit area. Helmets must be 1995 Snell Approved or equivalent. Snell 2000 SA or newer is highly recommended. Goggles or full face helmet is highly recommended.

5. DRIVER’S WINDOW NET 
Proper driver’s window net is mandatory with minimum 3/8” rod. Must have top release.

6. DRIVER’S FIRESUIT 
Driver’s firesuit is mandatory. Driver’s firesuit must be SFI rated. No coveralls allowed. Driver and suit must maintain clean looking appearance. Fireproof gloves, neck brace, balaclava, underwear, socks and shoes are highly recommended.

7. BATTERY
Must be securely mounted in a spill proof container with a steel frame in driver’s compartment behind driver’s seat. One 12 volt battery only. MUST HAVE 2 (TWO) IGNITION KILL SWITCHES MOUNTED ON BOTH SIDES OF DASHBOARD. BATTERY DISCONNECT SWITCH IS MANDATORY AND MUST BE ACCESSIBLE TO SAFETY CREW.

8. INSPECTIONS
All cars running in a feature event are subject to technical inspection by random selection at the end of the race. Any car running illegal non-stock parts will be disqualified. No car will be permitted to compete in an unsafe mechanical condition.