This class is intended to take a stock 4-cylinder production car, install a roll cage & safety equipment and go racing. The interpretation of the rules will be solely up to the judgment of the officials in charge and the official’s decisions will be final. Any part of the car not specifically covered must remain as it came off the regular production line. Stock parts are those found in model/year OEM parts book as used by the average general public. If it isn’t in the rules, then you must check with the officials before you make any changes. All cars must have at the track when requested by Tech either a Hayes or Chilton manual for the car being raced.

“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.”

Open to 4-cylinder cars, engines no larger than 2500cc. Cars may be front or rear wheel drive. No mid or rear engine cars. Must have a stock wheel base as factory listed for that model/year. Racecars must be complete and presentable in appearance at the beginning of each race. No convertibles or open roofs allowed. All holes to be covered with minimum 20 gauge steel. Newer body styles may be allowed to install older 4 cylinder engines even though they didn’t come with them from the factory.( Eg. Newer Mustang’s.) More may be added as requested and approved by Barrie Speedway.

Body must be stock appearing. All chrome moldings, ornaments, door handles, glass or plastic components must be removed except grille, windshield and stock dash. Original rear wheel arches must be retained. No aluminum body panels. Inner door panels must be stock or covered with sheet metal unless three door bars on driver’s side and two door bars on passenger’s side are used. (See Roll Bars/Cage for details). On hatchback models, the rear deck/hatch lid must remain (except glass). Stock spoilers only. No hood scoops or ground effect skirts. If door skins or fenders are replaced with body they must be stock appearing. Racecars participating in racing events must be presentable in appearance at all times. Cars that are considered improperly prepared may be rejected by the Technical Committee at any event. Racecars must be complete at the beginning of each event. Any cars considered unsafe to driver, competitors, staff or fans will be rejected and not allowed on track. Cars may not be shortened or lengthened in any way.

Must be anchored securely and in a spill-proof container in driver’s compartment separated from fuel cell. Must use one12 volt battery only. * Battery disconnect switch is mandatory and must be accessible to safety crew.

Stock four-wheel hydraulic brakes in good working condition are compulsory and are subject to test and inspection. Pedal must be in original position. Four wheel disc brakes are allowed if stock for that model and year.

Bumpers are required. They must be secure and are subject to test. Bumpers must be mounted in stock position/height. 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. Homemade bumpers are subject to approval and must be covered with stock bumper covers or aftermarket plastic bumper covers. Ends must be turned in. Sharp edges must be removed or covered. Bumpers must be present and secure at the start of each hear or feature. All cars must be equipped with chains or cables, front and rear, strong enough to be lifted by a tow truck for towing purposes. These must be attached to the chassis and not the bumpers.

One factory stock carburetor and stock sized throttle body of fuel injection setup for that make, model and year. Throttle must have two return springs. Maximum one two-barrel carburetor (may remove choke). Must use air cleaner stock or aftermarket. Attached to carburetor or throttle body and fit neatly under hood. No turbos, blowers or NOS. Fuel injected cars must have a kill switch, marked in red, which shuts off power to the fuel pump. Fuel injected cars must also have a relay, which shuts off power to the fuel pump on low oil pressure or loss of ignition. No ram air intakes. Air horn on air cleaner may be removed. No cowl induction air cleaners. Cars originally equipped with fuel injections may opt to use a carburetor, intake manifold, air cleaner and mechanical fuel pump from an older model of the same car.


Stock only with no modifying of parts. No devices to raise or lower cars or to soften or stiffen suspension. All cars may use spring rubbers on all four springs. Springs must be the same size side by side. No sway bar adjustment. Body and frame must be stock ride height from the track with driver in car (within 1”) as per OEM book. Camber on right front wheel must be within 2 ½” off of level as measured at the bottom and top of the rim with 35 lbs. PSI. Camber of left front wheel and rear wheels must be within 1”.  VW Golf, Rabbit, Jetta and Scirocco (up to 1992) are exempt from the camber rule. No adjustable shocks of any kind. No bump stops on any shocks. Camber plates are acceptable on front only.

Must be welded or bolted securely. Doors must not be cut down.

Must have steel 360 degree retaining hoop 1/4” by 2” positioned at front and rear of the drive shaft within 6” of each U-joint. (Rear wheel drive only). No chains. Drive shafts must be painted white.

10. ENGINE (No VTech engines allowed)
Must be stock for make, model and year. 16 valve engines allowed, see weight section for weight penalties. Maximum engine size is 2500cc. Single and dual cams allowed. Dual overhead cams allowed in front wheel drive cars only. Stock cam (duration and lift) for the engine installed. Stock cam rule is eliminated for carbureted engines. No polishing, grinding, lightening, fitting or matching allowed. Stock intake manifold, exhaust manifold and cylinder head for the engine installed. (See Carburetor/Fuel Injection for exception). Maximum overbore .030”. Engines must be mounted on stock mounts in stock location only. Engines without safety mounts must have a safety chain mounted from engine to frame in case an engine mount breaks. Schoenfeld header part # F238V will be allowed for Ford 2.3L engines.

Holly 350 carburetor is allowed for mustangs.

VW and CHEV engine header allowed.


Must exit behind driver and exit out right or left side of car. Exhaust may be run on top of the floor out the side of the passenger door , but must be boxed and sealed in. A few 1” holes in the floor ( not in structural area’s) will be allowed under exhaust pipes to let heat out NOT TO LIGHTEN . Stock floor must remain. Stock manifolds only. Maximum 2 1/4” O.D. pipes. Single exhaust only. Mufflers are mandatory. Exhaust must exit on side of car and must be flush with the body of the car.

Cars must have an approved fire extinguisher mounted in an approved mounting bracket and within driver’s reach with seat belt fastened. Fire extinguisher must have gauge and if the extinguisher is older than three years it must have a recharge slip dated within one year. SFI approved fire suit is mandatory. Stock hood and trunk latches must be removed and replaced with quick entry hold downs.

Original front firewall and floor must be maintained. All holes must be covered with minimum 22 gauge sheet metal either welded or riveted in place (no metal screws allowed). Rear trunk area can be removed to allow spilt fuel or any fumes to exit.

On Uni-body cars, front and rear frame sections may be joined for added strength. No X frame supports.

15. FUEL
Cars may use street legal unleaded pump gas with no additives allowed or you may use the racing fuel available from Barrie Speedway with no additives allowed. Cars may be disqualified if they are caught using any fuel or additives that make their fuel any stronger than the fuel available at Barrie Speedway. No NOS allowed.

Stock fuel system for that car make, model and year. (See exception in Carburetion/Fuel Injection).

Must be securely mounted and centered in trunk compartment between the frame rails and no lower than rear axle. Hatchback models require a latching, accessible compartment/firewall to be constructed of minimum 22-gauge steel, to house fuel tank. Maximum fuel tank capacity is seven gallons. Any size fuel cell allowed. Neoprene or steel gas line must be securely fastened under floor. On fuel injected cars, fuel line must run in protected or in a steel conduit. No plastic or glass fuel filters. No copper lines. Fuel cell highly recommended. Fuel must not leak from tank if car is turned. Gas caps must seal and vent lines must have a check valve.

Stock distributor or stock electronic ignition allowed. Stock coils only. Charging and starting system must be operating. Two ignition kill switches must be painted red on both ends of dash. Must be in working order and will be checked.

All flammable material must be removed except driver’s seat and stock dash. (Dash optional). Bucket or racing seat must be used and securely mounted. Seat must be positioned completely to the left of the centerline of the car. Aluminum racing seats are highly recommended. A solid headrest is mandatory and is subject to test.

All cars must be neatly and brightly painted. Numbers assigned by the track must be painted legibly on both sides of car and on roof in min. 18” high and 2” wide numbers in a colour offering distinct contrast to the colour of the car. No trick numbers. All cars must have their numbers in white (min. 3” high) on upper right hand corner of the windshield for lineup purposes. All cars must have 3” high white number/letters on the lower side on windshield indicating the size of the engine within 1cc. Example: 2210cc.

Must be in stock location and include a one-gallon overflow can mounted ahead of engine firewall. Radiator must fit under hood. No antifreeze allowed. Stock radiator fans only. All antifreeze must be flushed out thoroughly. There will be a three (3) week’s suspension if antifreeze is found.

Welded stock rear ends allowed. Must be in stock location and stock mounting.

Full roll cage with minimum 3 door bars on driver’s side and two door bars on passenger’s side are mandatory. A minimum of two uprights is required between each door bar. Main cage must be constructed of minimum 1 3/4” O.D. wall tubing. Door bars and door bar uprights must be a minimum of 1 1/2” O.D. .095” wall tubing. If inner door panel is removed on driver’s side, a minimum of 3 door bars extending into the door must be used. If inner door panel is removed on passenger side, a minimum of 2 bars must be used. Uni-body cars must have a one square foot by 3/16” plate under the uprights or the uprights must be attached to the sub frame. Uni-body cars must have a bar running horizontally between the rear uprights at floor level. If a front or back hoop is used, it must be installed in such a way as to ensure it will not entrap or injure the driver if it moves. Front and rear hoop may not be wider than the frame rails. Minimum 3” clearance recommended between driver’s helmet and overhead roll bars. All bars in driver’s area must be properly padded with an energy absorbing material. All welds must be electric or Mig welded. All main cage joints must have minimum .125” thick gussets. If door bars are less than 1 3/4” O.D. tubing then all joints require gussets. No pipe fittings allowed. No heating of tubing to form bends. Scrub rails are not counted as door bars. If scrub rails are used they must be securely mounted and have no sharp or protruding edges. Maximum 1” x 2” welded or bolted to the roll cage. Mounts must be within 6” of front and rear scrub rail. Carriage bolts only on scrub rails. Scrub rail must be mounted at or above front and rear wheel centerline. If bolts are countersunk, maximum 1” hole size.

Racing belts/harness are mandatory. Minimum 4 point harness with one lap belt and two shoulder belts. Must be in good condition. Five or six point 3” harness including sub belt is recommended. Shoulder belts must be securely mounted to the roll cage. Lap belts must be securely mounted to the frame, stock mounts or cage mounts. Sub- belt may be mounted to floor using minimum 3” washers to prevent pull through. All bolt mounts must be double nutted. Ensure that belts are not pinched when mounting them.

An approved racing safety helmet must be worn in all practice and race events and until car is parked in pits. Snell 2010 SA or newer is mandatory. Goggles and full face helmets are highly recommended.

Mandatory SFI approved fire suit (no rips or tears), gloves, boots & neck brace are highly recommended.


Falken Azenis  RT615K 195X60X14 , RT205X500x15 or 615’s only. No mixing of tires allowed.

Ex. If running 14”, all four wheels must be 14”.

15” tires are allowed if they came as stock on the year, make and model of the car being raced.

Stock OEM automatic or manual transmission for that make. Transmissions must bolt in with stock mounts. Automatic must be stock with stock torque converters. Standards must be complete with all gears, with clutch, pressure plate and flywheel with no modifications. No lightening of parts allowed. Rear wheel drive
transmissions must have 1/4” thick scatter-shield over the top 180 degrees of the bell housing for protection. No transmission coolers in driver’s compartment.

Right front rim must be a racing wheel. Maximum width of 7” from bead to bead. Must have stock offset wheels only, unless approved by Tech Officials. No aluminum, mag., or homemade wheels allowed. No wheel weights allowed.

All windows must be removed except full front windshield. Windshield must be stock windshield or Lexan. If Lexan is used, two center braces must be installed. If the windshield moulding is removed, four windshield retaining clips must be installed. Driver’s window net with quick release is compulsory. Absolutely NO Plexiglas allowed. Lexan is not Plexiglas.

All cars will be weighed. Cars will be weighed with drivers. Cars must not have more than 55% of total weight of car on left side wheels including driver. Weight must be minimum one pound for each cc of engine size plus 200 pounds, including the driver. No topping up of fuel after race or prior to weighing. Mustangs and VW’s do not have to add 200lbs for driver (ex. Mustang 2300lbs total driver included.) All ballast weights must be painted white, securely bolted on with minimum two bolts and the assigned car number on the weight. Barrie Speedway reserves the right to add any amount of lead to any location on any car deemed to be too fast in order to keep this class competitive and fun. This will be enforced only by the tech official.

Weight penalties will be applied as follows:
16 valve SOHC, add 200 lbs
16 valve DOHC, add 300 lbs

In the interest of competition, weight penalties, (50 lbs.) will be added to
cars after a driver’s 2nd Feature Win in a row, plus an additional 50 lbs. for every
feature win after that. Weight will be placed between front of passenger seat area and firewall on passenger side for rear wheel drive cars, and for front wheel drive cars, weight shall be placed in rear passenger seat area, right side of car (passenger side).Penalty weight is assigned to the car not the driver. Any penalty weight will remain in car for duration of season. Barrie speedway reserves the right to add or subtract any weight(s) and change weight percentages in order to achieve equal competition.

Trimming of fenders will be allowed if neat and there are no sharp edges. Excessive trimming is not allowed.


Transponders are mandatory and are available from the track. Transponders are to be located 90” from the front of the bumper.


One way radio communication is mandatory. One way radio scanner is required in order to receive line up instructions from the tower.). They may be purchased through Race 2 Way Communications. No two way radios allowed.


*All cars are to be inspected prior to their first evening of racing.
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. Track is allowed one “free” tear down/inspection of engine. If found legal any other track inspections race team will be compensated for gaskets.


End of year payouts and point funds will only be paid to registered drivers that have taken part and competed in a minimum of 51% of the season.

All specifications and regulations contained herein are subject to immediate change – without prior notice – as determined by the Director of Operations.