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1. Engine: 360 cubic inches, plus 1% tolerance for a 363.6 maximum c.i. displacement.

2. Block: Steel blocks only. No aluminum blocks. No titanium in engines, excluding valves and valve retainers. There must be an inspection plug in the oil pan, either a #12AN fitting or a one-inch pipe plug, or the pan may be removed at any time for inspection.

3. Fuel Injection: 2-3/16 inches (2.187”) maximum inside stack diameter; at least 3” in length for those used in conjunction with Ford #27-223, Mopar #27-222, or Chevy #27-211 Brodix spec heads. Larger injectors may be used, but they must have 2-3/16” sleeves at least 3 inches in length installed above the butterflies. (Note: Due to manufacturing processes, some injector restrictor sleeves may be slightly larger and a tolerance of .005” will be allowed on no more than 3 stacks). No relief hole may be drilled above the butterfly on any injector. No throttle body, computer-controlled or plenum-type injectors allowed. Injection unit shall have one shaft operated butterfly per cylinder. The immediate area of the butterfly MUST BE ROUND. No slide or barrel type injectors will be allowed. No down-nozzle injectors may be used. Only one injector nozzle and one injector line per cylinder is allowed and it must be in the injector casting.

4. Heads: Spec heads, part #27-211 (Chevy), #27-223 (Ford), and #27-222 (Mopar), with American Sprint Car Series (ASCS) stamp may not be altered in any way for performance enhancements. Intake opening no larger than original opening, except: intake port floors and sides may be ground or polished 3/4 of an inch or no further into port than the closest edge of the closest letter of the ASCS logo. During this polishing, the left side of the letter "A" is sometimes inadvertently brushed with the polish wheel. This is permissible as long as the letter is still intact. During polishing of inlet port, polish marks may go slightly further than the 3/4-inch mark.

Intake port at no time may exceed 215 cubic centimeters. Intake port polishing will be allowed no more than 1-1/2 inches below the bottom of the original seat ring on the back side of the bowl area and no more than one inch on the short side. Polishing will be allowed in the combustion chamber area to avoid hot spot chaffing. Polishing will be allowed in exhaust ports, as long as the original "ASCS" logo is not affected or port shape is not altered substantially.

Absolutely no intake or exhaust port relocation, raising, enlargement or reshaping of any type. Valve angle and placement may not be altered in any way on the ASCS spec head or on any other head. ASCS checking fixtures to check the above specifications and dimensions will be utilized. Any internally-repaired ASCS spec head must be re-certified by Brodix.

or Fel-Pro (#8E89208) intake restrictor gaskets installed. Unaltered means absolutely no modifications to bolt holes or port sizing. The ASCS restrictor gaskets must be installed right side up with the logo on top. The restrictor gasket must protrude a minimum of .150 inch into the roof line of both the injector and cylinder head port. There shall be no streamlining or re-contouring of intake ports or injectors to reduce the effect of the restrictor gasket. Non-spec heads must have stock bolt size (3/8”), location (no step studs) and remain within one degree of OEM angle specifications (must accept a stock intake manifold). Restrictor gasket bolt holes may not be enlarged or relocated. No Brodix #12 heads. No 18-degree heads. No canted-valve heads. No heads other than the original 23-degree valve angle heads. A maximum of one-degree tolerance of original manufacturing of valve angle is allowed.

Airflow Research 360 spec heads (part #1056) will be allowed with absolutely no altering of the ports. Clearance and polishing work in the combustion chamber is allowed, but no work may go beyond the valve seat. No ALL-Pro heads allowed.

Any V-8 U.S.-production engine may be used after the heads have been approved. No V-6 engines will be allowed.

5. Weight: Minimum 1475 lbs. weight (with driver; no fuel added) after the race. Zero tolerance. No bolt-on weights will be allowed without approval of the Head of the CSCN technical committee. Tubing and nerf bars must be hollow.

7. Chassis: Any sprint chassis is allowed. The roll cage must be of a four-post design. No dirt champ cars. No elliptical tubing used on or as part of the main frame structure. No chassis/suspension cockpit-adjustable devices (excluding top wing slider) are allowed.

8. Fuel Tank: All fuel tanks must have a bladder. Fuel tanks must be securely fastened. Any means of mounting the tank must meet the approval of the officials. Tank size used for qualifying must remain for all events. Tank must be of sufficient size to run the 35 lap “A” Main without a fuel stop.

9. Wheels: No dual wheels are allowed. No carbon fiber wheels. Maximum allowed width of 18 inches for right rear wheel. Maximum allowed width of 15 inches for left rear wheel.

10. Carbon fiber: No carbon fiber parts allowed in the suspension or drive line.

12. Driveline System: All driveline systems must be properly installed, reinforced and/or covered. A driveline hoop or restraint is required.

· Maximum top wing size of 25 square feet with 30-inch side panels. Maximum center foil width 60 inches covered with aluminum. The deepest point allowed in the top surface of the wing will be 2-1/2 inches measured from top front of wing to the rear edge. Top surface of the wing measuring crosswise must be flat. NO turn-up (wicker bill) on 90 degree angle allowed at rear of center foil on dished wings. Flat top wings may utilize a 1” turn-up (wicker bill) on 90 degree angle at the back edge of the top wing. Center foil must be one piece. No split wings or bi-wings. No vent holes. Top wings must not extend beyond outside of rear tires. Top wing sideboards maximum size, 72 inches long and 30 inches tall. Panels must be of one-piece construction. Panels must be fabricated flat so as to have no turnouts or flaps (reinforcement not to exceed 1.25 inches).

· Two stationary rudders will be allowed to run under the entire length of the underneath portion of the top wing. Nowhere shall the rudder exceed 3 inches in height.

· Maximum front wing size to be 6 square feet total with a maximum width of 36 inches and 12-inch side panels. The leading edge of the front wing cannot be further than 20 inches forward of the leading edge of the front axle. One-inch maximum turn-up (wicker bill) allowed on any front wing. Front wing side boards maximum size, 12 inches tall and 26 inches long with no more than one inch overhang from the center foil front edge to the side board front edge. Sideboards may have front, back, top, and bottom turnouts of no more than ½ inch.

· Wings must be fabricated of metal alloys only. NO fiberglass, carbon fiber, or other similar material may be used.

· No body pieces to extend beyond or underneath front torsion tube except hood. No wedges or foils underneath race car. No pieces may be added to the frame so as to resemble, imitate or be specifically designed to deflect, trap or form a wind break of any nature, except those used to cool/protect the motor & braking system.

14. Bumpers: All rear bumpers must be steel. Diameter must be a minimum of one inch and must be bolted in place (no pins, cotter keys, or pop rivets).

15. Front axle: Steel only. Minimum sizes: 2 inches by .156, 2-1/4 inches by .120, 2-3/8 inches by .095.

16. Nerf bars: Steel only. Must be bolted in place (no pins, cotter keys, or pop rivets).

18. Tires: Open tire rule except right rear tire. Right rear tires are limited to only the approved right rear spec tire by each affiliate series. Example: American Racer MC3 (SOS). Official list of approved right rear tires will be released August 1^st by Ohsweken Speedway.

19. Fuel: Methanol or ethanol fuel only. Top lube or fuel-coloring agent are the only additives allowed; performance-enhancing fuel additives are not allowed. Suspected fuel will be tested at the teams expense and moneys will be withheld until results are returned to Ohsweken Speedway. If fuel found to contain performance-enhancing additives, disqualification will result in forfeiture of all monies won.

20. Numbers: Numbers must be visible and neat in appearance. Numbers must be on both the left and right side of the tail, as well as the side panels and center foil of the top wing. Numbers must be at least 18 inches high, and letters at least 12 inches high, on the top wing. In the event of duplicate numbers, teams may be asked to temporarily add a unique letter to their number in all locations on the car. Numbers will be assigned on a first-come, first-served basis by order of receipt of entry.

21. Car's equipment: Use a securely fastened steering wheel with a quick disconnect and removable steering wheel. No aluminum roll cages, front axles, frames, rear bumpers or nerf bars. All roll cages must be higher than the driver's helmet. Opening on left-hand side of cockpit must be a minimum of 14 inches. Opening on right-hand side of cockpit must be a minimum of 12 inches. Minimum wheel base of 83 inches, maximum wheel base of 90 inches. No pop rivets or cotter keys to be used to fasten wings, bumpers or nerf bars to race car. No drilled or hollowed bolts in the car’s steering components. Only two valves and one spark plug per cylinder allowed. No titanium crankshafts or rods allowed. The sprint car cannot be raced without a hood. If a rear bumper is lost during a race, the car may continue until the car is stopped. If a red flag situation occurs, the rear bumper must be replaced in the allotted time before it can be restarted. A right-hand side head restraint system is recommended; it is also recommended for the left-hand side. In some cases, head nets may not be required if the seat restraint system is approved by track officials. Metal fasteners are strongly suggested. Knee pads or other devices to keep the knees from banging around on objects and causing injuries are encouraged. Shoulder/helmet restraints are also encouraged. A padded head rest and roll cage padding around the cranial area is encouraged. A type of Styrofoam or fiberglass insulation of one-inch thick with an upholstery-type covering is suggested. If arm-a-fax or foam rubber is used, it should be considerably thicker. A tether is MANDATORY on the drag-link, attached to the frame.

22. Driver seat: Driver's seat is required. A fuel/fume deflector is recommended. Fuel/fume deflector should be wider than driver's seat and extend from floor pan underneath seat to turn-up behind seat.

23. Seatbelts: Seatbelts should have the five- or six-point configuration of attachment to the frame or roll cage. The shoulder belts should be attached behind the seat to the frame or roll cage lower than the driver’s shoulders. Arm restraints are also suggested.

24. Driver's equipment: Drivers are required to wear a SNELL approved Helmet. The driver's suit should be of multi-layered Nomex (or equivalent). Nomex underwear and socks are suggested. A head sock is also suggested. Driving gloves, arm restraints, and racing shoes are strongly suggested. Helmet; Driver Suits; and fastened seat belts are to be used anytime the car is started.

25. In-Car Communication: No two way radios are allowed. One way radios are mandatory for this event and MUST BE IN PLACE AND OPERATIONAL ANYTIME THE CAR IS ON THE RACETRACK. They may be checked prior to “A” Main. Failure to prove use of a working one way radio prior to the start of the “A” Main will result in disqualification and forfeiture of monies won.

26. Technical Inspection: All Cars must pass pre race tech in order to compete. Cars that fail pre race tech for suspected illegal head work shall have the option of removal of intake manifold for further inspection. Cars will be subject to further technical inspection at the discretion of the technical inspection committee assembled by Ohsweken Speedway at any time. Intake manifolds may be required to be removed during post race technical inspection on any car competing in the “A” Main. All illegal parts will be confiscated; the responsibility for proving the parts are legal rests with the team being checked. No protests on technical rules will be accepted either written or verbal. All decisions are final.

27. Technology: No traction control devices of any kind allowed. This includes mechanical and electronic traction control devices. No wheel speed sensors permitted. No microprocessor-operated or -controlled parts (such as fuel injections, fuel systems, etc.). ALL wiring / connectors / and terminations must be out of the cockpit and located within the engine compartment.

Cars may be asked to disconnect tachometers at the discretion of the technical committee.

NOTE: CANADIAN SPRINT CAR NATIONALS is an open-competition event. All sprint car teams which abide by the administrative, technical and procedural rules as set forth by Ohsweken Speedway are welcome. Ohsweken Speedway reserves the right to reject any pre-entry / entry for any reason. Entry fee applies to car and is not transferable to other teams. Driver changes are allowed as per event rules. All decisions by Nationals Managing Officials are final.

OHSWEKEN Speedway – Ohsweken , Ontario