True North Gassers

rs must have two driver exits. Four stock production fenders mandatory, fiberglass duplicates permitted. Fenders may be trimmed for tire clearance. Door hinges on any lift-off door must have safety pins or locks. No aero improvements allowed. This includes wings, air foils, and Body modifications. All scoops must be era-correct. Era-correct paint, primers and graphics. NO PONY CARS! ENGINE Any US internal-combustion automotive engine permitted. All Engines are required to have a Distributor or Magneto with a mechanical fuel system (Carburetor or Injection)* Exhaust System Open competition exhaust required. Fuel Racing gasoline, gasoline, alcohol, gasohol, and ethanol permitted. Nitro methane, diesel, natural gas, and propane prohibited. Fuel System All Carburetors and mechanical fuel injection allowed. Electronic Fuel injection prohibited. All fuel-tank filler necks located inside trunk must have filler neck vented to outside of body. Vented caps prohibited. All batteries, fuel lines, electric fuel pumps, or filler necks located inside trunk require complete bulkhead of at least .024-inch steel or .032-inch aluminum to isolate driver
compartment from trunk. Fuel lines must be located outside driver compartment. No pressurized fuel tanks allowed. Induction
Any induction permitted. Oil Retention Device A properly fitting, SFI Spec 7.1, 7.2, lower engine oil retention device is highly recommended, may use a belly pan in lieu of a device attached to the engine. The belly pan must extend from frame rail to frame rail and extend forward of the harmonic balancer and rearward to rear engine plate and must incorporate a minimum 2-inch-high lip on all sides. A non flammable, oil-absorbent liner mandatory inside of retention device.* “See Host track rules for Diapers”
Nitrous oxide prohibited. Throttle Must be driver activated. Acceptable throttle controls consist of Pedal, Linkage (solid, Cable or Hydraulic) and mounts/bell cranks as required. No other controls allow. Supercharger Permitted but limited to no larger than 8-71 std roots type on gasoline-, racing-gasoline-, and alcohol/Ethanol-burning cars. Rotors must be driven from the front; both external drive and internal gearing. Supercharger restraint system meeting SFI Spec 14.1 is mandatory on supercharger when alcohol is used as fuel. Manifold burst panel mandatory. Supercharger restraint straps must be covered with a fire-resistant material. The blower restraint straps and fuel lines must be installed such that when the restraint straps are fully extended no load is placed on any of the fuel lines. Supercharger belt guard that protects all fuel, oil, and water lines required. No composite materials in injector hat and/or scoop allowed. Composite materials include but are not limited to carbon fiber, Kevlar, and weave-graphite fiber. Hat/scoop must be nostalgic in appearance. Internal modifications permitted. Scoops limited to 12.5 inches above throttle body. NO TURBOS! FRAME
Frame Reinforced stock, rectangular, square, or stepped tubing are acceptable, built to IHRA/NHRA regulations. Parachute Mandatory on any car that runs 125 mph or faster in ⅛ mile..
* Roll Bar/ Roll Cage Roll bar mandatory in all cars running 6.50 to 7.35. Recommended in all slower cars.* Roll cage mandatory on any entry running 0.00 to 6.49 or one that has an altered floor/firewall, or if vehicle runs 125 mph or faster. On full bodied cars equipped with unaltered firewall, floor, and body, and is running slower than 6.40, a roll bar is permitted in place of a roll cage. Roll-Cage Padding meeting SFI Spec 45.1 mandatory on any vehicle running 6.00 and quicker. Padding must be used anywhere driver’s helmet may come in contact with roll-cage components. SUSPENSION AND STEERING
Front
Full automotive-type suspension mandatory. Strut type Prohibited. Minimum one operating hydraulic shock absorber per wheel. Rigid-mounted suspensions prohibited. Straight axle type front suspension preferred but not mandatory. Rear
Any IHRA/NHRA accepted rear suspension. Electronic controlled suspension devices Prohibited. Wheelie Bars Permitted. Wheels must be nonmetallic. *
Steering wheel and components must mount to the left of center of the vehicle. Center Steer vehicles prohibited. ELECTRICAL / ELECTRONICS
Delay Box/Device Prohibited. Trans brakes are allowed. No Electronic staging device (BUMP BOX) allowed. Ignition
Digital ignition box allowed. Any electronic starting line rev limiters .i.e. -Two Steps(three steps) are prohibited. Any ignition systems with data acquisition capability prohibited. Timed ignitioninterruption devices (stutter boxes) prohibited. “High-side” rev limiters permitted. Any rpm-limiting devices that have been altered or installed to function as a down track RPM controller, prohibited. Data acquisition capable ignitions accepted. No other wiring shall be connected directly or indirectly between any other parts of the ignition system. Any Non Programmable, single coil ignitions allowed. All wiring associated with the ignition system must be fully visible, labeled, and traceable. INTERIOR
Seats
Driver’s seat must be to left side of drive shaft. Properly braced, framed, and supported. Seats constructed of aluminum, fiberglass, carbon fiber or double-layer poly (automotive accessory seats) permitted. Tires
Racing slicks or approved racing tires only
Wheels
Must be automotive-type wheels suitable for street use. Must be ERA CORRECT or modified to appear era correct. The thread engagement on all wheel studs to the lug nut, or lug bolt to wheel hubs, must be equivalent to or greater than the diameter of the stud. Length of the stud/bolt does not determine permissibility; length of engagement between the stud and lug determines permissibility. Snap-on hubcaps prohibited. TRANSMISSION
Manual or automatic type transmissions permitted. Any race type shifter that is Driver activated permitted. Must be connected to the transmission by means of a solid linkage(s) or cable(s). No other mechanisms of any kind permitted. This includes no air or electric solenoids to activate shifter. No Computer controlled transmissions
Judgement calls can and will be made by the promoter if nessessary.