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Racers can follow the following Rule/Weight set or we
275-Radial will run on a 1/8th mile format with a "Qualified" (32-car) field with Alternates.
**If your car runs 5.40 or slower in the 1/8 mile you only need to
run the Tires excepted below to be legal for the class**
The car must retain its original appearance and profiles. Aftermarket fiberglass parts are limited to hood, fenders, doors, deck lid and bumpers, One piece front-ends are allowed, but must retain factory appearing grill, head lights, and marker lights. The driver and passenger doors must be fully operational and must open from the outside.
BRACKET RACING AIDS:
The use of bracket racing aids such as optical sensors, delay boxes, and throttle stops are prohibited
Must retain factory unaltered firewall, in factory location. A cosmetic overlay is permitted.
HOOD / SCOOPS:
Cowl & forward facing hood scoops are allowed. Scoop or cowl may not exceed more than 9 inches at the highest point of the air inlet opening above the height of the original hood flat surface.
All factory interior pieces including pedal assemblies must be in factory locations. Factory door panels, carpet, dashboard are required. Back seat may be deleted, but must have carpet covering the bare floor.
Driver Seat must remain in the stock location.
Lexan permitted. We encourage all racers who use lexan to keep the overall look of the windows as close to factory appearing as possible.
CHASSIS / SUSPENSION
All cars must retain stock suspension, aftermarket tubular control arms, coil over kits, or OEM front strut retrofits are permitted. Replacement Bolt-on Lightweight K-Members are legal, but must be a direct bolt on, no welding modifications permitted. Stock wheelbase will be enforced on all vehicles. You can weld tubes from your roll cage to the front suspension..
**The only front suspension bolt-on kit deemed legal by the PSCA are the CHRIS ALSTON No Fab, AJE, HEIDTS, Smith Racecraft and *FATMAN bolt-on kits (for 62-67 Nova's, 67-69 Camaro's & early Mustangs) Total Control Products Coil Over Conversion Kits, and The Rod & Custom Motorsport Mustang II kit for 64 1/2-66 Mustang, DoubleAAPerformance K-Member for G-Body, Part #RC-106 & Skinny Kid front end kits for late model Mustangs.... Kits must be installed as instructed and not modified in any manner.
Aftermarket factory-replacement-type K-member permitted, but must attach to the chassis using only the original factory OEM-type mounting bolts. No part of the K-member may be welded to the chassis.
FRAME & CHASSIS:
No Full Tube Chassis Cars Allowed
Any OEM automatic transmission permitted. Aftermarket torque converter, shift kit, valve body, shifter, and pan cooler use are permitted. Trans brakes are permitted.
After-market clutch (single disc only) assisted manual transmissions are allowed (See Weight Penalty's) Clutch/automatics or planetary transmissions are not allowed. Split sliders are also not allowed. All shifts must be made manually without the aid of electric, hydraulic or pneumatic devices. Any manual transmission built by an automotive manufacturer, with stock case and gears will race at same weight as an automatic transmission entry.
Any factory type rear end is allowed.
Boost and Nitrous Controllers are permitted.
650ci Limit for Big Blocks with a MAX Bore Space of 4.84 - 480ci Limit for Small Blocks with a MAX Bore Space of 4.40
Aftermarket Billet, Cast Iron & Aluminum Blocks are allowed.
CARBURETOR / THROTTLE BODY:
Any single or dual carburetor or throttle body set-up is allowed
Any EFI system is permitted
ENGINE MOUNT LOCATION:
Engine must remain in stock location. Engine may not touch the factory unaltered firewall. Motor plates are permitted.
Aftermarket cylinder heads, aluminum or cast iron are allowed (No Billet Heads Permitted except on Small Block Nitrous & Small Block Turbo Combos), See Weight Ads below
Any nitrous combo is legal, but cannot be used with any other power adder except by I-6 Combo (See Weights Below).
Any Roots (Up to 12.71) or Centrifugal MAX 4.5 Inducer Diameter) Equivalent or smaller with the following specs must be approved by the PSCA before being deemed legal:
MAX Inlet Hose Diameter 5.00"
Accepted Single Turbochargers: 94mm Single Turbochargers are permitted
Accepted Single Turbochargers: 98mm Single Turbochargers are permitted on
V6 and Small Block V8 engines in accordance with the following
Accepted Twin Turbochargers: 72mm or 67mm Twin Turbochargers are permitted on
V6 and Small Block V8 engines in accordance with the following
FUEL / FUEL SYSTEMS:
Gasoline (Race Gas) and E-85 are the only legal fuels permitted except for Small Block F1R, Roots and 88mm Turbo (or smaller) Combos can use M-1 (and any x275 combo is legal to run M-1 at x275 rules and weight)
ON BOARD DIAGNOSTICS / DATA RECORDERS:
On board diagnostic computers and recorders are permitted. Memory and playback tachometers are allowed.
Rack and Pinion allowed on all vehicles.
STREET LEGAL REQUIREMENTS:
All cars 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.
Front Tires: Must have a minimum tread width of 4.5 inches. Front tires do not have to be DOT approved.
Rear Tires: Mickey Thompson 275/60R15 (3754x) Drag Radials or M/T 3055, 3055c or 3055s or any slick shorter and/or narrower than the 28x10.5's listed
Must retain stock wheel base with a maximum variation right to left and front to back of one inch.
Wheelie bars are not permitted (any type of device other than factory OEM frame/suspension/body parts used to control a wheelie/wheel-stand in any way is also prohibited)
After each qualifying and elimination pass, all cars must stop and weigh at the track scales. If you lose in eliminations, and your opponent fails to make weight you will be reinstated into the eliminations only if you made minimum weight requirements. If both cars failed to make minimum weight, both cars will be disqualified. It is the driver's responsibility to verify with each track scale, the weight of his/her car prior to each race day. There will 5lb error factor allowed.
ALTERNATING LANES DURING QUALIFYING:
Each 275-Radial driver must alternate lanes during qualifying. Even if you skip a session, you must run the opposite lane you made your previous run in. If you choose to ignore this rule, your second consecutive pass in the same lane will be disqualified.
TOW BACK & TOW VEHICLES:
All 275-Radial entries are allowed to tow to staging lanes and to the track scales. All are subject to be searched by a Official at any time.
All 275-Radial vehicles must take the tree, and run down the track (Unless instructed by A Official) and Scale
All other combos will be evaluated on a case by case basis
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