PRO STREET is the quickest and fastest heads-up class in the Pacific Street Car Association’s
line-up. Mid to Low 6’s at over 230MPH is what you will see in this class. From a ’57 Chevy to a ’07 GTO.. Twin Turbos, Supercharged, and Enormously Large Nitrous Injected Mountain Motors make’s this the class everybody is talking about!!!
Pro Street CLASS GUIDELINES
Steel, aluminum, fiberglass and carbon fiber bodies and body parts are allowed as long as the car retains it’s original appearance and profile. Wheel well openings can be modified for tire clearance. Rear wings are allowed, but may not extend more than 28 inches from the transition point with the body to the tip. The drivers and passenger doors must be fully operational and must open from the outside. The PSCA reserves the right to add weight penalties for any body modification that does not fit within the current rules.
PSCA reserves the right to add weight as deemed necessary to any body style that presents a superior aerodynamic advantage at any time during the season
LETTERING / DECALS:
Contingency decals or SPONSOR decals may be permanent on body, per approval from an PSCA official.
CHASSIS / SUSPENSION:
Any chassis and suspension combination that passes NHRA safety standards is allowed.
Any rear-end, gear ratio and transmission are allowed. Automatic transmissions may use a
trans-brake air or electric shifters.
Entries may utilize only 1 Distributor or 1 Mag.
See Weight Breaks.
ENGINE MOUNT LOCATION:
The maximum allowable engine setback is no more than 10% of the wheelbase as measured from centerline of front spindle to center of furthest forward spark plug hole.
Any cylinder head is allowed as long as only 1 spark plug per cylinder is functional.
Mufflers are not required.
FUEL / FUEL SYSTEMS:
Gasoline & Alcohol only (No Nitro) The PSCA reserves the right to check gasoline at any time during competition. The addition of chemical additives intended to alter the makeup of the gasoline for increased performance is strictly prohibited. During fuel check, a competitor must identify the brand of gasoline being used. The sample will be considered illegal if it does not match the baseline results (ex. color, dielectric reading +or-.2, and chemical tests) logged by PSCA. Failure to pass fuel check is grounds for disallowance of the run during competition and disqualification from the event during eliminations.
All nitrous systems are allowed. Nitrous oxide commercially available,
thermostatically controlled blanket-type warmer accepted. Any other external heating of bottle’s
prohibited. The use of any agents other than nitrous oxide as part of, or mixed with, this
pressurized fuel system is prohibited. Nitrous oxide may not be used in conjunction with
supercharger or turbochargers. If entry is teched in at a non-nitrous weight break, all nitrous
oxide lines, fittings, solenoids, and bottles must be removed before car is allowed to pass tech.
SUPERCHARGER / TURBOCHARGER:
Single centrifugal supercharger, single or twin turbochargers allowed (max twin turbo size is 91.000mm ea.) Two-stage superchargers or turbos are not allowed (twin turbos must share a common plenum). Intercoolers are allowed. Screw & Roots-type limited to single supercharger per engine.
Roots-type size limited to 14-71; 19 inches maximum rotor length, 11 1/4-inch case width, rotor
cavity diameter 5.840 inches maximum, variable multi-speed supercharger devices prohibited.
Supercharger restraint systems required on Screw & Roots-type units. (125% Over-Drive Limit on Screw Super Charged Entries) Nitrous oxide not allowed in combination with supercharger or turbocharger.
TURBOCHARGER MEASURING PROCEDURE (Example 88mm):
PSCA accepted dual turbochargers are permitted with the following requirements: 1) Turbochargers must be of conventional impeller and housing design and type. 2) Turbochargers are limited to a maximum size of 88MM – 3.464-inch- inducer wheel diameter at the point where the leading edge of the compressor wheel meets the inlet housing. 3) Inlet housing is permitted a maximum inlet diameter of 3.545-inch where the leading edge of the compressor wheel meets the housing. 4) Compressor wheel to housing clearance must maintain a maximum of 0.080-inch clearance beginning from a) where the leading edge of the compressor wheel meets the inlet of the compressor housing to b) the transition point where the trailing edge of the compressor wheel meets the volute. 5) All air entering the turbocharger must pass through the turbocharger inlet. Injection of any liquid, gas, or any other substance into the inlet or exhaust housing prohibited. 6) Turbochargers must share common plenum. 7) Stacking turbochargers prohibited. Turbocharger compressor wheel must be constructed of cast or billet aluminum. Exotic material wheels prohibited.
Front tires must have a minimum tread width of 4.5 inches. Front tires do not have to be DOT
approved. Rear tires have no limitations. The tread of the tires must not protrude outside the body
line at the top of the tire.
PRO STREET WEIGHT GUIDE:
(All weights are race-ready, car with driver)
Engine Group/ Power Adder/ Weight
Rotary Turbo or Nitrous / 1700
4 Cyl. Turbo or Nitrous / 1750
All 6 Cyl. Turbo or Nitrous / 2150
Single Turbocharged Combos:
All 332ci or less/ Single Turbocharged / 2150
All 333ci-450ci / Single Turbocharged / 2250
All 451ci-500ci / Single Turbocharged / 2350
All 501ci-550ci / Single Turbocharged / 2450
Small Cubic Inch Twin Turbocharged Combos:
All 332ci or less / Twin Turbocharged (up to 76mm MAX ea) / 2200
All 332ci or less / Twin Turbocharged (76.001-80mm MAX ea) / 2300
All 332ci or less / Twin Turbocharged (80.001-88mm MAX ea) / 2400
All 332ci or less / Twin Turbocharged (88.001-91mm MAX ea) / 2500
Medium Cubic Inch Small Block Twin Turbocharged Combos:
All 333ci-450ci / Twin Turbocharged (up to 80mm MAX ea) / 2450
All 333ci-450ci / Twin Turbocharged (80.001-88mm MAX ea) / 2500
All 333ci-450ci / Twin Turbocharged (88.001-91mm MAX ea) / 2550
All 333ci-450ci / Twin Turbocharged (88mm/NHRA Pro Mod or 94mm MAX ea) / 2600
Big Block (450ci & Under) Twin Turbocharged Combos:
All up to 450ci / Twin Turbocharged (up to 88mm MAX ea) / 2600
All up to 450ci / Twin Turbocharged (88.01 – 91mm MAX ea) / 2650
All up to 450ci / Twin Turbocharged (88mm/NHRA Pro Mod or 94mm MAX ea) / 2700
Small or Big Block (Big Cubic Inch) Twin Turbocharged Combos:
All 451ci-500ci / Twin Turbocharged (up to 88mm MAX ea) / 2650
All 451ci-500ci / Twin Turbocharged (88.01 – 91mm MAX ea) / 2700
All 451ci-500ci / Twin Turbocharged (88mm/NHRA Pro Mod or 94mm MAX ea) / 2750
All 501ci-550ci / Twin Turbocharged (up to 88mm MAX ea) / 2700
All 501ci-550ci / Twin Turbocharged (88.01 – 91mm MAX ea) / 2750
All 501ci-550ci / Twin Turbocharged (88mm/NHRA Pro Mod or 94mm MAX ea) / 2800
Small Block NA, Nitrous & Supercharged Combos:
Small Block / Naturally Aspirated / 1900
Small Block / Nitrous Oxide / 2050
Small Block / Roots Supercharged / 2300
Small Block / Centrifugal Supercharged / 2400
Small Block / Screw Supercharged / 2600
Big Block NA & Nitrous Combos:
Big Block Unlimited CI / Naturally Aspirated / 2050
Big Block up to a 5.0 Bore Center / Nitrous Oxide / 2300
Big Block over 5.0 Bore Center / Nitrous Oxide / 2350
Big Block Supercharged Combos:
Big Blocks with a 6.71 will be 5.0lbs per cubic inch
Big Blocks up to 455ci/ Roots or Single Centrifugal Supercharged / 2500
Big Blocks up to 455ci/ Screw Supercharger (D-Rotor) / 2750
Big Blocks up to 455ci/ Screw Supercharger (C-Rotor) / 2850
Big Block 456ci & up / Single Centrifugal Supercharged / 2600
Big Block 456ci & up/ Roots Supercharged / 2650
Big Block 456ci & up/ Screw Supercharger (D-Rotor) / 2850
Big Block 456ci & up/ Screw Supercharger (C-Rotor) / 2900
Big Block 456ci & up/ Twin F-2 SuperChargers / 2750
*Entries using torque converters with manual trans may deduct…50 lbs.
*Entries using OEM Automatic Transmission may deduct…75 lbs.
*Entries using Screw Supercharger at 92% (or less) can deduct…………100 lbs.
PSCA Required Decals:
Class Sponsor Decal
A Hughes decal must be installed on base of windshield on the passenger side. (Bottom left hand side when looking at front of vehicle windshield) before entering the tech area..
PSCA Oval Decals
1 PSCA Oval decal must be placed on each side of every car in a visible location before entering the tech area..
Series Sponsor Decal
Chassisworks decal must be installed on base of windshield on the driver’s side. (Bottom right hand side when looking at front of vehicle windshield)
Contingency Program & Contingency Decals
In order to become eligible for PSCA official contingency program, You must first become a member of the PSCA. You can do this at the PSCA Event Trailer during registration or on-line at the PSCA Store. In order to receive Contingency Monies from any of the listed Contingency Sponsors, you must have the correct product listed and matching Contingency Decal for that product on your car for the entire PSCA Racing Event… Racers will be checked for Products & Decals while being teched in and winners & runner-ups again will be checked in the Winner’s Circle after the conclusion of each event. Winners & Runner-ups failing to show up for this mandatory Inspection will forfeit all Contingency Money that is owed!!!! All Contingency Decals may appear anywhere on the vehicle in a clear and organized fashion. Contingency decals may not be overlapped or modified. Most decals are available at the PSCA Event Trailer, but in the event the PSCA does not have the decals in stock, it is the racer’s responsibility to obtain the proper decals to be eligible for the Contingency payout.
Penalties for violating any PSCA Class Or Contingency Program Rules
Penalties will vary for any PSCA Class or Contingency Program Rule violation’s from Championship Point Deduction, Race Suspension, Probation and/or Re-instatement Fine (Paid to St Jude In the name of the PSCA) If you are in any violation that directly effects our “Electronics Policies” (Example: Use of a Delay Box, Use of a Throttle Stop, etc..) You can receive the Maximum Penalty (Disqualification from Event with loss of 50 Championship Points, Two-Race Suspension and a $500 Re-Instatement Donation) You will also be listed on a Web Page for all to view what violation and penalty any racer receives..
RACE DAY POLICY’S
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 Pro Street 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.
Entering into a 2nd Class:
During qualifying, any PSCA racer who purchases a 2nd NHRA Tech Card and pays entry into an additional class will be able to do so. However, once your Final Pro Street Qualifying Session is Completed, Driver and Car are no longer able to make runs in that 2nd class… This also means NO RUNS (Driver and Car) in the Sunday Morning Bracket Time Trials Session.
TOW BACK & TOW VEHICLES:
All Pro Street entries are allowed to tow to staging lanes and to the track scales. All are subject to be searched by a PSCA Official at any time.
All vehicles must take the tree, and run down the 1/4 mile (Unless instructed by PSCA Official) and scale.
All Pro Street Racers that earn prize money can go directly to the PSCA trailer after eliminations and pick up his/her Winnings.
Winners Circle Picture & Contingency Verification:
Pro Street Winner & Runner-up must return to the PSCA Winners Circle Area for Official Photographs and Contingency Verification. Failing to do so, will result in loss of all contingency monies earned. There are no exceptions!!!
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