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2008 Pro Street Rules

Posted on March 4, 2021March 4, 2021 By pscaracing

2007 Champion Ed Thornton

Class Description
PRO STREET is the quickest and fastest heads-up class in the Pacific Street Car Association’s
line-up.  Mid 6’s at over 220MPH is what you will see in this class. From ’57 Chevy’s to ’07 GTO’s… Twin Turbo’s, Supercharged, and in your face Nitrous Injected Mountain Motors make’s this the class everybody is talking about!!!

Pro Street  CLASS GUIDELINES

BODY:
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.

AERODYNAMICS:
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.

BRACKET RACING AIDS
The use of bracket racing aids such as optical sensors, delay boxes, stutter boxes, and throttle
stops are not allowed.

CHASSIS / SUSPENSION:
Any chassis and suspension combination that passes NHRA safety standards is allowed.

DRIVE TRAIN:
Any rear-end, gear ratio and transmission are allowed. Automatic transmissions may use a
trans-brake air or electric shifters.

Ignition:
Entries may utilize only 1 Distributor or 1 Mag.

DISPLACEMENT LIMITS:
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.

HEADS:
Any cylinder head is allowed as long as only 1 spark plug per cylinder is functional.

EXHAUST:
Mufflers are not required. Headers must have a 4 pipes into 1 single outlet collector and must not protrude more than 2 inches outside the bodyline (Please refer to picture below).  If The PSCA Tech Official feels your exhaust does not meet the following specs, your combo may receive a 25 – 50lb Weight add depending on the severity…..


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.
                          

     
INDUCTION
NITROUS OXIDE:
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 or multiple supercharger or turbocharger allowed (max twin turbo size is 91.000mm ea.) 
Two-stage superchargers or turbos are not allowed (twin superchargers or 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. (96% Over-Drive Limit on Screw Super Charged Entries)
Nitrous oxide not allowed in combination with supercharger or turbocharger.

TIRES:
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

Import Combos:
Rotary Turbo or Nitrous / 1750
4 Cyl. Turbo or Nitrous / 1800
All 6 Cyl. Turbo or Nitrous / 2250

Single Turbocharged Combos:
All 332ci or less/ Single Turbocharged / 2600
All 333ci-450ci / Single Turbocharged / 2700
All 451ci-500ci / Single Turbocharged  / 2800
All 501ci-550ci  / Single Turbocharged  / 2900

Small Cubic Inch Twin Turbocharged Combos:
All 332ci or less / Twin Turbocharged (up to 76mm MAX ea) / 2400
All 332ci or less / Twin Turbocharged (76.001-80mm MAX ea) / 2500
All 332ci or less / Twin Turbocharged (80.001-88mm MAX ea) / 2600
All 332ci or less / Twin Turbocharged (88.001-91mm MAX ea) / 2
675

Medium Cubic Inch Small Block Twin Turbocharged Combos:
All 333ci-450ci / Twin Turbocharged (up to 80mm MAX ea) / 2600
All 333ci-450ci / Twin Turbocharged (80.001-88mm MAX ea) / 2650
All 333ci-450ci / Twin Turbocharged (88.001-91mm MAX ea) / 27
25

Big Block Twin Turbocharged Combos:
All up to 450ci / Twin Turbocharged (up to 88mm MAX ea) / 2850
All up to 450ci / Twin Turbocharged (88.01 – 91mm MAX ea) / 2925

Small or Big Block (Big Cubic Inch) Twin Turbocharged Combos:
All 451ci-500ci / Twin Turbocharged (up to 88mm MAX ea) / 2900
All 451ci-500ci / Twin Turbocharged (88.01 – 91mm MAX ea) / 2975
All 501ci-550ci / Twin Turbocharged (up to 88mm MAX ea) / 2950
All 501ci-550ci / Twin Turbocharged (88.01 – 91mm MAX ea) / 
3025

Small Block NA, Nitrous & Supercharged Combos:
Small Block / Naturally Aspirated / 2000
Small Block / Nitrous Oxide / 2150
Small Block / Roots Supercharged / 2400
Small Block / Screw Supercharged / 2550

Big Block NA & Nitrous Combos:
Big Block Unlimited CI / Naturally Aspirated / 2250
Big Block up to a 5.0 Bore Center / Nitrous Oxide / 2600
Big Block over 5.0 Bore Center / Nitrous Oxide / 2650

Big Block Supercharged Combos:
Big Blocks up to 455ci/ Roots or Single Centrifugal Supercharged / 2700
Big Blocks up to 455ci/ Screw Supercharger / 2850 (96% Over-Drive Limit)
Big Block 456ci & up / Single Centrifugal Supercharged / 2800
Big Block 456ci & up/ Roots Supercharged / 2850
Big Block 456ci & up/ Screw Supercharger / 3000 (96% Over-Drive Limit)
No Big Block Supercharged Combo (Except Centrifugal) Can Weigh Less Than 2700lbs

Weight Deductions:
*Entries using torque converters with manual trans may deduct…200 lbs.
*Entries using OEM Automatic Transmission may deduct…250 lbs.
*Turbo 
or Centrifugal Supercharged Entries without an intercooler may deduct…50lbs

PSCA Required Decals:
Class Sponsor Decal 
“Hughes Performance” decal must be installed on base of windshield on the passenger side. (Bottom left hand side when looking at front of vehicle windshield)
Series Sponsor Decal 
“TBA” decal must be installed on base of windshield on the drivers 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. All contingency decals may appear anywhere on the windows 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 Rules:
Penalties will vary for any PSCA Class 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 car performance (Example: Over CI, Illegal Power Adders, 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
SCALES:
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, you are no longer able to make runs in that 2nd class… This also means NO RUNS 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. 

BYE-RUNS:
All vehicles must take the tree, and run down the 1/4 mile.

Rules

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