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Class Description
Limited Street is a heads-up class for all types of vehicles from
60's muscle cars to late model
Mustangs and Camaros'. This class is limited to Small Blocks only. Suspension, both front and
rear must retain stock configuration. Legal power adders include the use of a nitrous oxide single
plate, centrifugal type superchargers, 80 mm or smaller turbocharger. All cars compete on a DOT
approved 28 x11.5 ET Street Tire.
Class Guidelines
BODY
BODY:
The car must retain its original appearance and profiles. Aftermarket fiberglass parts are limited to
hoods, rear deck lids and front bumpers only. After market fiberglass wings and spoilers are permitted.
LETTERING / DECALS:
Car lettering & Decals are allowed on all windows (Except where PSCA
Class & Series Decals are required) 1 major sponsor decal will be
allowed on the rear quarter panel, decklid or door (Not to exceed 250sq
Inches per side) and Hood Scoop or Cowl area (Not to exceed 50sq
Inches per side) Wild Street Class sponsor decal (K&N Filters) must
be placed in the lower passenger corner of the front windshield PSCA
Series Sponsor decal (TBA) must be placed in the lower passenger
corner of the front windshield..
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 (Scoop can be no larger than what came stock on that year
vehicle). Fiberglass replacement hoods (cowl) are permitted. Cowl hoods are limited to 5 inches in height.
INTERIOR:
All factory interior pieces must be in factory locations. Factory door panels, headliner, carpet,
dashboard are required. Back seat may be deleted, but must have carpet covering the bare floor.
SEAT LOCATION:
Two front bucket seats, or one bench seat with upholstery required. Seats must remain in the
stock location.
WINDOWS:
Must be of safety glass. No Lexan permitted. The only exception will be the rear window of an El
Camino or other truck for roll bar access. All front door windows must be fully operational.
BRACKET RACING AIDS
The use of any bracket racing aids such as optical sensors, delay boxes,
and throttle
stops are prohibited
BRAKES
The braking system may be upgraded to discs or larger drums. All cars must have front and rear
brakes.
CHASSIS / SUSPENSION
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 (But will carry a 50lb weight penalty)
K-MEMBER
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.
REAR SUSPENSION
All cars must retain stock rear suspension. Bolt on traction devices are permitted. Sway bars may
be deleted or added (This includes "weld in" ANTI-ROLL Bars) Leaf springs may be relocated for tire clearance purposes. Shocks must
retain original angle as factory equipped.
FRAME & CHASSIS
Stock frame rails must be retained front and rear and be unaltered.
Sub frame connectors are
permitted.
DRIVE TRAIN
AUTOMATIC TRANSMISSIONS:
Any 3 speed or overdrive automatic transmission is allowed. No 2 speed or
Powerglides
permitted.
Aftermarket torque converter, shift kit, valve body, shifter, and pan cooler use are permitted. Trans
brakes are not allowed & car will not pass tech if solenoid is
attached to trans. No electric or air shifters permitted. All shifts must be made manually.
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.
Please call if you plan on using
a Manual trans!!
REAREND:
Any factory type rear end is allowed.
ELECTRICAL:
The battery may be relocated. The charging system must be operative and the alternator must be
mounted in the engine compartment. Electric fans allowed.
ENGINE
Small blocks only. There is a 415ci limit. There are no restrictions on internal engine
modifications Pontiac and Olds
engines are legal under 415ci.
BLOCK:
Aftermarket cast iron production blocks are allowed. Aluminum blocks permitted only on vehicles
that came factory equipped.
#2
In the 2007 Championship Craig Williams
CAMSHAFT:
Any Camshaft Permitted
CARBURETOR / THROTTLE BODY:
Carburetor limited to a single conventional 800 cfm(4150 type design). Carburetor is limited to
800cfm 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 80 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!!
ENGINE MOUNT LOCATION:
Engine must remain in stock location, and must retain factory style engine mounts
NO MOTOR
PLATES ALLOWED Engine mounts may be solid. Engine may not touch the factory unaltered
firewall.
HEADS:
Aftermarket cylinder heads allowed, but must retain the factory valve angle within 2 degrees.
Porting allowed. Welding, epoxy, raised ports, and exotic modifications strictly prohibited.
Please
call if your heads are not listed here
List of legal heads will be updated as new heads are
released.
Edelbrock Victor Jr - Edelbrock Performer - Dart Pro1 - Dart Iron
Eagle - Brodix Track 1 - Brodix 10STD - Brodix 11STD - Trick Flow 23 degree for Chevy - Trick Flow
Track Heat - Trick Flow Twisted Wedge - Trick Flow TFS-51400010 - World Products S/R
Torquers - AFR's 205, 210, 220 & 227 series - Canfield
20450-58-0-B,
GM's 12464298 & 10125377
AFR
215 & 225 are legal at a 100lb weight add...
INTAKE MANIFOLD:
Carburetor: commercially available, mass-produced cast aluminum single four barrel intakes are
permitted. No Dominator flange manifolds allowed. No sheet metal
or other composite manifolds
permitted. EFI may use a Composite upper manifold if factory equipped.
NITROUS:
Nitrous is limited to a conventional single stage plate system, single fogger nozzle,
(wet or dry) NX (Gemini Twin Stage 6) or SpeedTech's (Defuser
PN# 231-000 & 231-010) .
2 spray bars in the plenum are
legal in lieu of nitrous plate, but call
for prior approval. Two solenoids
for nitrous system MAX, one nitrous (MAX .125 Orifice), one gas and a third is permitted
only for a purge system. Plate has to be commercially available using spray
bars only (Cross Bar Plates are OK, but can only utilize 1
gas & 1 nitrous solenoid) System can only use
one 10lb bottle, with a dash 6 line from bottle to nitrous solenoid. No
progressive type controllers allowed.
SUPERCHARGER / TURBOCHARGER:
Single centrifugal supercharger (Super
Chargers must be belt driven...) or single turbocharger are permitted. Supercharger
inlet diameter (external): 4.00-inch maximum. Discharge diameter not to exceed (external) 3.00-inch maximum.
No Boost controller's permitted. Roots style up to 177c.i.d.
Turbo size is limited to a single TRUE 80 mm (Look
below for measuring Procedures) . No Boost Controllers Permitted!!
Accepted Single
Turbochargers: 76mm Single Turbochargers are permitted
on
V6 and Small Block V8 engines in accordance with the following
requirements: 1) Turbocharger must be of conventional
impeller and
housing design and type. 2) Turbocharger is limited to a
maximum size
of 2.99251 inches (76mm) inducer diameter at the point where the
leading
edge of the compressor wheel meets the inlet housing. 3)
Compressor
cover inlet is permitted a maximum inlet diameter of 3.08351
inches
(78.3214mm) 4) Compressor Wheel to housing clearance must
maintain a
maximum 0.091 (2.3114mm) clearance beginning from a) the leading
edge
of the compressor wheel where it 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. 6)
Injection of
any liquid, gas, or any other substance into the inlet or exhaust
housing prohibited. 7) Compressor wheel contour must be
continuous
features from the inducer to the exducer (no "stepped"
wheels).
Accepted Single
Turbochargers: 80mm Single Turbochargers are permitted
on
V6 and Small Block V8 engines in accordance with the following
requirements: 1) Turbocharger must be of conventional
impeller and
housing design and type. 2) Turbocharger is limited to a
maximum size
of 3.14960 inches (80mm) inducer diameter at the point where the
leading
edge of the compressor wheel meets the inlet housing. 3)
Compressor
cover inlet is permitted a maximum inlet diameter of 3.24060
inches
(82.3114mm) 4) Compressor Wheel to housing clearance must
maintain a
maximum 0.091 (2.3114mm) clearance beginning from a) the leading
edge
of the compressor wheel where it 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. 6)
Injection of
any liquid, gas, or any other substance into the inlet or exhaust
housing prohibited. 7) Compressor wheel contour must be
continuous
features from the inducer to the exducer (no "stepped"
wheels).
Permitted
Superchargers
-
Current
list of superchargers which fit within the Limited Street approved
"spec".
Vortech A,B,S,T-trim Supercharger Systems*
Vortech YS & YSI-trim Supercharger Systems
ATI P600*
ATI D-1, D-1SC, D-1R, F1, F1A, F1C, F1R
ATI P-1SC, P-1SCH
Paxton SN, VR4-series*
Paxton Novi 1000*, 2000
Powerdyne*
SVO*
KB Whipplecharger*
Saleen*
Eaton*
*Superchargers permitted 100-LB. weight break.
New superchargers will be evaluated as they are
released, and must be submitted for approval by manufacturer to PSCA Director in writing.
EXHAUST
Production type mufflers are required. No collector inserts,
or collector mufflers permitted. Modification or removal of muffler internals is prohibited (no gutting).
Exhaust system must extend to rear axle of vehicle.
FUEL / FUEL SYSTEMS
Gasoline
& Race Gas only (No Alcohol or 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.
IGNITION
Programmable ignition systems permitted (example..MSD Digital-7
Programmable, PMS & Ford EPEC Systems) using a hand held programmer ONLY. At no time will a laptop be allowed in any Limited Street
car. Crank triggers are not permitted.
2 step modules are allowed.
TRACTION CONTROL:
Not Permitted.
OILING SYSTEM
Dry sumps and external oiling systems are prohibited. The front cross member may be altered for
oil pan removal. Vacuum pumps are acceptable.
ON BOARD DIAGNOSTICS / DATA RECORDERS
Are permitted through the ignition system box (example..MSD Digital-7
Programmable) At no time will a laptop be allowed in any Limited Street
car.
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.
Headlights may not be removed for air inlet!!
TIRES
Front tires must have a minimum tread width of 4.5 inches. Front tires do not have to be DOT
approved. Rear tires must be Mickey Thompson ET Streets 28 x 11.50 or smaller DOT tire.
M/T ET Street Radials of any size are not allowed.
LIMITED STREET WEIGHT GUIDE:
(All weights are race-ready car with driver)
Naturally Aspirated / 2650lbs
Nitrous Assisted / 3200lbs
Supercharged / 3200lbs
Turbocharged
up to 76mm / 3200lbs
Turbocharged up to 76.01mm - 80mm / 3350lbs
WEIGHT ADD
Add
50 lbs.
For adding Rack
& Pinion Steering to cars that did not come factory equipped.
Add 100 lbs.
For the use of
any type of a intercooler on Turbo or
SuperCharged entries.
Add 100 lbs.
AFR
215 & 225 Cylinder Heads
WEIGHT
DEDUCT
Deduct
100 lbs.
for Rear Leaf
Spring w/Solid Axle Entries
Deduct
100 lbs.
for 310ci or Smaller Engines
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.
PSCA Required Decals:
Class Sponsor Decal
K&N Filters 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 or Contingency Rules:
Penalties will vary for any PSCA Class or Contingency 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
Registering For The Class:
All
Limited
Street Racers must register (Please bring your NHRA Track Tech Card
with you) at the PSCA Event Trailer before taking your car to tech....
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 Limited 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 Limited 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:
Limited Street does not allow tow vehicles of any sort in the staging
lanes. All Wild Street vehicles must drive to scales and return to pits
without the aide of any other vehicle.
Burn-Out Procedure:
Limited Street does not allow burn-outs across the starting line. You must
complete and stop your burn-out without crossing the starting line.
BYE-RUNS:
All vehicles must take the tree, and run down the 1/4 mile.
PSCA
Race Day Rules and Procedures...Click Here
All
drivers and vehicles must meet current NHRA and track requirements.
For questions or more
information on these rules, please contact Mel Roth at 661-917-3078
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