New Class For 2009!!! Starting At March Fontana
Street Challenge is a heads-up class designed for street driven muscle cars and late model factory hotrods with affordability in mind. With only minor modifications, a single power adder and a set of “TRUE” street radial tires and you got one of the toughest classes to tame.
STARTING LINE: Street Challenge will be utilizing a 4/10th’s Pro Tree Starting System
ELIMINATION LADDER: TBD
BODY: The car must retain it’s original appearance and profiles. All body parts must be intact including inner bumper supports. Aftermarket fiberglass replacement panels are limited to hood only. Aftermarket fiberglass spoilers are permitted.
LETTERING / DECALS: Car lettering is limited to windows only. Right Lower corner of Windshield is reserved for Class Sponsor (Symbolic Collision) and Left Lower for Series Sponsor (Chassisworks)
FIREWALL: Must retain factory unaltered firewall, in factory location. A cosmetic overlay is permitted.
HOOD / SCOOPS: Forward facing hood scoops are prohibited (unless factory equipped for year and model entered). Fiberglass replacement hoods (cowl) are permitted, but limited to 4 inches in height.
INTERIOR / SEATS: All factory interior pieces must be in factory locations. Factory door panels, headliner, carpet and dashboard are required. Factory front and rear seats are required. Aftermarket front seats that match factory interior permitted. (Aluminum, plastic, or any other type of drag or road racing seats are prohibited).
WINDOWS: Must be of safety glass. No lexan permitted. All windows must be fully operational.
BRACKET RACING AIDS: The use of bracket racing aids such as optical sensors, delay boxes, stutter boxes, and throttle stops are prohibited.
CHASSIS / SUSPENSION
FRAME & CHASSIS: Stock frame rails must be retained front and rear and be unaltered. Sub frame connectors are permitted.
FRONT SUSPENSION: All cars must retain factory stock-type suspension. Front frame rails, radiator core support, and inner fender sheet metal must remain in stock location (trimming for header clearance permitted). Aftermarket tubular control arms, coil over kits, or OEM front strut retrofits are permitted. But must be a direct bolt on, no welding modifications permitted. Aftermarket Racing Struts with spindle mounts or hub mounts designed for tube type front ends are prohibited. Stock wheelbase will be enforced on all vehicles. Aftermarket Rack & Pinion Steering is permitted on car that did not come factory equipped. Factory sway bar may be removed. Chassisworks No-Fab, Smith Racecraft aftermarket bolt on front suspension kits are not legal.
Roll Car: 6 or 8 point roll bars permitted only (No roll cages)
FRONT BRAKES: Upgrading the Brake System is permitted, however, No lightweight Drag Racing Brake Systems are allowed.
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. No Mini-tubs or any modifications to the factory wheel tubs permitted. Rear Shocks must maintain factory angle. Anti-Roll Bars are not permitted. Factory sway bar may be removed.
ADDING BALLAST: Permanently attached ballast may be added in a NHRA legal manner. Removable ballast for the purpose of classification adjustments is limited to 100 lbs. in a NHRA Approved weight box, with a total of 500 lbs (Permanent & Removable) distributed evenly throughout the car.
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
AUTOMATIC TRANSMISSIONS: No two speed transmissions allowed. No trans-brakes, no electric or air shifters permitted. Aftermarket torque converters, shift kit, valve body, shifter, and pan cooler use are permitted.
MANUAL TRANSMISSION: Factory and Aftermarket manual transmissions are allowed. Clutch-less versions, Jerico, Liberty, or Lenco type transmissions are not permitted. All shifts must be made manually without the aid of electric or pneumatic devices. Also, clutch operation must be manual.
ALL WHEEL DRIVE: Not permitted.
REAR END: Factory type rear end only. Housing may not be altered or shortened. No IRS conversions to solid axles.
ENGINE ACCESSORIES: Must have minimum of water pump and alternator.
ENGINE BLOCK: Aftermarket blocks permitted. Maximum cubic inch size is 370 (For Power Adder entries) No tall decks allowed.. Aluminum blocks illegal (Unless factory equipped for year and model entered)
CAMSHAFT: Any camshaft combination allowed.
CARBURETOR / THROTTLE BODY: Carburetor limited to a single conventional 750 cfm(4150 type design). Carburetor is limited to 750cfm MAX. Carb modifications limited to removal of choke horn only. Polishing of ventures, fitting of the throttle shafts, metering and booster plate modification, aftermarket metering blocks, and changing of throttle plate diameter is strictly prohibited. Single carb spacers limited to 1 inch, including Nitrous Plate and Gaskets. No dominators type carbs allowed. Throttle body limited to a single 75 mm max. Duel throttle bodies legal if factory equipped however, they will be limited to a 80mm single mass air meter.
EFI: (Electronic Fuel Injection) Factory fuel injection systems with the factory computer must be in use. Commercially available “plug-in” chips are OK. No DFI or aftermarket injection systems permitted, unless factory computer is functional. Laptops used in any manner (Tuning, Recording Data, etc…) in any EFI car is not permitted, with no EXCEPTIONS. With all the new aftermarket systems continuously being released, please call on any aftermarket system before you enter an event!!
AIR FILTER: All air entering carburetor or throttle body must pass through an automotive type air filter (K&N type Air Filters are permitted)
ENGINE MOUNT LOCATION: Engine must remain in stock location and retain factory type engine mounts. No motor plates allowed. Engine mounts may be solid.
OILING SYSTEM: Must be a factory type.
CYLINDER HEADS: Aftermarket cast iron or aluminum cylinder heads allowed, but retain the factory valve angle +/- 2 degrees. Porting allowed. Welding, epoxy, raise ports, and exotic modifications strictly prohibited. See approved list below:
Please call if your heads are not listed here (Dave 661-917-8428)
Big Block: Edelbrock Performer & Performer RPM Series – GM Bowtie (12363390, 12363392, 12363399, 12363400, 12363480 & 12363410) Brodix (BB-1, STS BB-1, RR BB-0, RR BB-r & RR BB-2plus) – Dart (BBC Iron Eagle & Pro-1 275)
INTAKE MANIFOLD: Any commercially available, mass produced manifolds permitted. No sheet metal or other composite manifolds permitted of any type, unless factory equipped.
EXHAUST: Production type mufflers are required. No collector inserts permitted. Modification or removal of muffler internals is prohibited (no gutting). Exhaust must have Tailpipes that at least extend to the rear of the back tires. Maximum exhaust pipe diameter is 3 inches for dual and 3.5 for single exhaust.
IGNITION: No MSD 7530,7531 or similar boxes allowed. (Call for clarification)
FUEL / FUEL SYSTEMS: The PSCA reserves the right to check fuel at any time. Gasoline is the only fuel permitted. Car must retain factory fuel tank (Lower sump add-ons are permitted) Mechanical and electric fuel pumps, pressure regulators, and any line size are allowed.
ELECTRICAL: Battery may be relocated and limited to 1 single 12-volt. Electrical fans allowed. The charging system must be operative and must be mounted in the engine compartment. Electric water pumps are strictly prohibited. 16-volt systems not permitted.
ON BOARD DIAGNOSTICS / DATA RECORDERS: On board diagnostic computers and recorders strictly prohibited. Memory and playback tachometers are allowed.
RADIATOR: An automotive-type radiator is required.
NITROUS: Nitrous is limited to a conventional single stage 2 Spray Bar Plate System or a Single Fogger Nozzle (wet or dry). 2 Spray Bars in the plenum are legal in lieu of nitrous plate, but call for prior approval. Two solenoids for nitrous system MAX (1 Nitrous & 1 Fuel) Nitrous Solenoid is limited to a .110 orifice. No Purge Systems Allowed. Plate has to be commercially available using spray bars only (With Max Nitrous Jet Size .085) Cross Bar Plates are not permitted. System can only use one 10lb bottle, with a dash 4 line from bottle to nitrous solenoid. Bottle must be mounted in trunk. No progressive type controllers allowed.
SUPERCHARGER: Single centrifugal or small roots superchargers are permitted. No cog belt systems, 8 rib normal size serpentine belt max. 7.25″ MAX Lower Pulley.
– ATI P600 & P1SC series
– Paxton SN, Novi 1000
– Vortech A, B, S, SQ-trim
– Factory ported Late Model Cobra
– 4-71 & 6-71 Roots
TURBO: 62mm MAX single only. No manual or electronic boost controllers..
INTER & AFTERCOOLERS: Air to Air Intercoolers permitted only (See weight add below in “Weight Guide” Any Aftercooler allowed (See weight add below in “Weight Guide”
STREET LEGAL REQUIREMENTS
INSURANCE & REGISTRATION: All vehicles must be currently registered and insured.
HEADLIGHTS & TURN SIGNALS: All entries are required to have working headlights and tail lights (headlights doors must be fixed open or work manually or automatically on cars so equipped). Brake lights, turn signals are 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.