|Street Challenge is a heads-up class designed for muscle cars and late model factory hotrods with driver ability in mind. With very few engine rules, any single power adder and a set of “TRUE” street radial tires and you got one of the toughest classes to tame.|
| Class Guidelines
AIR FILTER: All air entering carburetor or throttle body must pass through an automotive type air filter (K&N type Air Filters are permitted & suggested)
BODY: The car must retain it’s original appearance and profiles.
BRACKET RACING AIDS: The use of bracket racing aids such as optical sensors, delay boxes, stutter boxes, and throttle stops are prohibited.
ELIMINATION LADDER: Pro Ladder
FIREWALL: Must retain factory unaltered firewall, in factory location. A cosmetic overlay is permitted.
INTERIOR / SEATS: Covered door panels, carpet and factory dashboard is required. Aftermarket front seats that have upholstery or covered are permitted. Factory rear seats can be deleted with carpet overlay.
LETTERING / DECALS: Car lettering is limited to windows only. Right Lower corner of Windshield is reserved for Class Sponsor (K&N Filters) and Left Lower for Series Sponsor (Chassisworks) A PSCA Oval decal must be placed on each side of every car in a visible location before entering the tech area..
RADIATOR: An automotive-type radiator is required.
STARTING LINE: Street Challenge will be utilizing a 4/10th’s Pro Tree Starting System
TRACTION CONTROL: Not Permitted & Strictly Prohibited
CHASSIS / SUSPENSION
FRAME & CHASSIS: Stock front frame rails must be retained, rear frame rails may be notched (Not Moved) for tire clearance
FRONT SUSPENSION: Suspension components must all remain in stock locations. Direct bolt-on A-arms are
K-MEMBER: Aftermarket replacement bolt on K-Members are permitted.
REAR SUSPENSION: All cars must retain stock rear suspension. Bolt on traction devices are permitted. Leaf spring relocation kits permitted for tire clearance only. No rear coil-over conversions permitted. Mini-tubs or modifications to the factory wheel tubs is permitted. Factory sway bar may be removed.
WHEEL BASE: Must retain stock wheel base with a maximum variation right to left and front to back of one inch.
WHEELIE BARS: Wheelie bars prohibited
ALL WHEEL DRIVE: Not permitted.
AUTOMATIC TRANSMISSIONS: No Restrictions
ENGINE MOUNT LOCATION: Engine must remain in stock location…Engine mounts may be solid.
EXHAUST: Production type mufflers are required (no exceptions) No collector inserts permitted. Modification or removal of muffler internals is prohibited (no gutting).
FUEL / FUEL SYSTEMS: The PSCA reserves the right to check fuel at any time. Gasoline is the only fuel permitted. Fuel Cells OK. Mechanical and electric fuel pumps, pressure regulators, and any line size are allowed
MANUAL TRANSMISSION: No Restrictions
REAR END: Factory type rear end only. Housing may be shortened up to 3″ from Factory Specifications. No IRS conversions to solid axles.
SINGLE POWER ADDER ONLY: Any single type power adder is legal. You can have as many nitrous systems (but not in combination with blower or turbo) You can have twin turbochargers (but cannot add a nitrous system in conjunction)
STREET LEGAL REQUIREMENTS
HEADLIGHTS & TAILLIGHT: All entries are required to have working headlights and tail light (headlights doors must be fixed open or work manually or automatically on cars so equipped). Brake lights, turn signals are not required.
TIRES: Front tires must be DOT Approved and have a minimum tread width of 4.5 inches. Rear tires must be a true “off the shelf” radial tire with a minimum tread rating of “180”. Tire size is based off a P255/60 R15. 16-18in “off the shelf” radials permitted but cannot exceed the following dimensions: 10.25″ section width, 8.2″ tread width, 27.0″ overall diameter. The tread of these tires must not protrude outside the body line at the top of the tire. If your car came from the factory with a tread rating lower than 180, bring factory info on the tires with proof tires came with vehicle.
STREET CHALLENGE WEIGHT GUIDE:
PSCA Required Decals:
Contingency Program & Contingency Decals
Penalties for violating any PSCA Class Or Contingency Program Rules
RACE DAY POLICY’S
Alternating Lanes During Qualifying:
TOW BACK & TOW VEHICLES:
Winners Circle Picture & Contingency Verification:
PSCA Race Day Rules and Procedures…Click Here
All drivers and vehicles must meet current NHRA and track requirements.
For any questions or additional information on these rules, please contact Mel Roth at 661-917-3078