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EXTREME
DRAG RADIAL
is
a heads-up class for all
types of vehicles. Rear
suspension may utilize
ladder bar or four-links (no
full tube chassis).
Legal combinations include
the use of nitrous oxide,
supercharger, turbocharger
and normal aspiration at
different weight breaks for
parity. All entries must
compete
on a
must
compete
on a 12
inch wide (or smaller)
DOT
approved, Drag
Radial Tire
Class Guidelines:
BODY:
The car must retain its original appearance and profiles. Aftermarket fiberglass
or carbon fiber replacement panels are limited to hood, front fenders, doors, deck lid and bumpers. One piece front ends are permitted, but must retain factory head lights,
grille and bumper (if originally
equipped).
FIREWALL:
Must retain in original factory location, and be constructed out of
sheet-metal. Notching of factory firewall for valve cover clearance is allowed. Firewalls that are moved from the
factory location will receive a 50lb weight
penalty..
INTERIOR:
Dash board must be
factory appearing and in stock location.
WINDOWS:
Must be of safety glass, Lexan, or other shatterproof materials, minimum 1/8th inch thick. Also must be clear and non hazy.
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
FRONT SUBFRAME:
All sub framed or full framed cars must retain complete stock front subframe from firewall forward. Frame connectors or rear frame rails may not pass engine firewall, except for the following exceptions. The 62-67 Chevy II's and 64 1/2-68 Mustangs and similar cars with bolt-on front K-members, must retain stock or aftermarket bolt-on front subframe. The subframe must be a bolt on (not welded, unless kit is OK by
PSCA officials) to factory mounting location. Frame connectors or rear frame rails may pass firewall location, but not exceed where original front subframe mounts to the body. All late model Mustangs must retain factory front subframe from firewall forward. Stock or direct fit aftermarket K-members are permitted, but must be bolted in factory location using factory bolt holes. Cross members on all front sub frames may be altered or removed for oil pan clearance.
FRONT 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, 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, Part
#RC-106 & Skinny Kid
front end kits for late model
Mustangs.... Kits must be installed as
instructed and not modified.
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
No Restrictions
DRIVE TRAIN
AUTOMATIC TRANSMISSIONS:
Any OEM automatic transmission permitted. Aftermarket torque converter, shift kit, valve body, shifter, and pan cooler use are permitted. Trans brakes are permitted.
MANUAL TRANSMISSION:
After-market clutch (single disc only) assisted manual transmissions are allowed Clutch/Automatics or planetary transmissions
(Lenco or Jeffco) are not allowed. Split sliders are also not allowed. All shifts must be made manually without the aid of electric, hydraulic or pneumatic devices.
ENGINE:
No cubic inch limits.
(see weight guide below)
ENGINE BLOCK:
No Restrictions
ENGINE MOUNT LOCATION:
The
maximum allowable engine
setback from the center line
of the number-one spark-plug
hole to the center line of
the front spindle is 2
inches, except in those
vehicles in which the engine
was factory installed at a
distance greater than 2
inches behind the spindle.
In both
cases, the engine must
be mounted in front of the Original
Factory Firewall Location. For
those cars with the firewall
moved back and your engine
is more than 2" and
Less than 4" from
the center line of the
number-one spark-plug hole
to the center line of the
front spindle,
you will be penalized an
additional 50lbs
CYLINDER
HEADS:
No Billet Cylinder Heads
Permitted. See weight guide
below for individual specifications...
CARBURETOR / THROTTLE BODY:
Any single or dual carburetor or throttle body set-up is allowed
EFI:
Any EFI system is permitted
NITROUS:
Any nitrous combo is
legal.
SUPERCHARGER:
Roots up to a 14.71
(No Screwchargers) See
weight adds.
TURBOCHARGER:
Single 106mm Max
Turbo (Small or Big
Blocks) - 88mm Max ea
Twin Turbo (Small
Blocks Only) See
weight adds.
EXHAUST:
Production type mufflers or collector mufflers are required. Modification or removal of muffler internals is prohibited (no gutting).
IGNITION:
No restrictions
OILING SYSTEM:
No Restrictions. The front cross member may be altered for oil pan removal. Vacuum pumps are acceptable.
ON BOARD DIAGNOSTICS / DATA RECORDERS:
On board diagnostic computers and recorders are permitted. Memory and playback tachometers are allowed.
TRACTION
CONTROL:
Not
Permitted
RADIATOR:
An automotive-type radiator is required.
STEERING:
Rack and Pinion allowed on all vehicles.
STREET LEGAL REQUIREMENTS:
All cars are required to have working headlights and tail lights. Brake lights, turn signals are
not required to operate.
TIRES:
Front tires must have a minimum tread width of 4.5 inches. Front tires do not have to be DOT
approved. Rear Tires...12 inch MAX wide
D.O.T. Drag Radial Tires ONLY
WEIGHT BREAKS:
Weight breaks are determined by the engine combinations and power adders
WHEEL BASE:
Must retain stock wheel base with a maximum variation right to left and front to back of one inch.
XTREEME DRAG RADIAL WEIGHT GUIDE
Base
Weight (All
weights are race-ready, car
with driver)
4
Cly W/Any Power
Adder........................................................2700
lbs
6
Cly
W/Nitrous.........................................................................2700
lbs
6 Cly
W/Turbo
or Blower.........................................................2900
lbs
6 Cly
W/Turbo
and Nitrous.......................................................3350
lbs
Small
Blocks
W/Nitrous.............................................................2700
lbs
Small
Blocks W/Turbo (up to 94mm)
........................................3150
lbs
Small
Blocks W/Turbo (94.01 to 98mm)
....................................3250
lbs
Small Blocks W/Turbo
(98.01 -
106mm).....................................3350
lbs
Small
Blocks W/Twin Turbo (88mm
ea)
....................................3450
lbs
Small
Blocks Roots
Supercharger.............................................3300
lbs
Small
Blocks Centrifugal
Supercharger (Up to 4.5
Inlet)............3150
lbs
Small
Blocks Centrifugal
Supercharger (4.6 to 5.5
Inlet)............3250
lbs
Small
Blocks Centrifugal
Supercharger (5.6 to 6.05
Inlet MAX)..3350
lbs
Big Blocks Nitrous up to
500ci....................................................3000
lbs
Big Blocks Nitrous 501ci -
555ci..................................................3050
lbs
Big Blocks Nitrous 556ci -
600ci..................................................3150
lbs
Big Blocks Nitrous
601ci - 650ci
MAX..........................................3300
lbs
Big Blocks Roots
Supercharger..................................................3400
lbs
Big Blocks
Centrifugal Supercharger or
Turbo...........................3500
lbs
WEIGHT
ADDS:
Add 50
lbs. For
Non Factory Location
Firewall
Add 50
lbs. For
Engine Set-Back over 2"
but not to exceed 4"
Add 50
lbs. For
Dry Sump Oiling System
Add 50
lbs. For Small
Blocks Using CFE "Pro
King" & Edelbrock
"Victor II" or any
Symmetrical Cylinder
Heads
Add 75 lbs. For
Small Blocks using any
Canted Valve (Brodix CV
SP265 & SP330) or similar
Canted Valve Cylinder Heads
Add
100 lbs.
For
Small Blocks using Yates
High Port (part
#'s 6049SC1 & 6049C3H) Edelbrock
(SC-1) Brodix (BF 200
& 300 Series)
CFE "Storm"or
any splayed valve
cylinder heads
Add
75lbs. For
Big Blocks Using Dart 383
Oval Port Heads Or Similar
(Conventional Head with
valve angle +/- 3 degrees
From Factory)
Add
150 lbs. for
Big Blocks using any
Canted, Splayed Valve, Pro
Stock or Big Chief Style or similar
Cylinder Heads
Add
250 lbs. for
Big Blocks using Brodix part
#'s PB-1200
PB-1201 PB-1202 and PB-2005
Add
100 lbs. For
Wheelie Bars
WEIGHT
DEDUCTS:
Deduct
400 lbs. For no Power
Adder (Use Nitrous Base
Weights)
WHEEL BASE:
Must retain stock wheel base with a maximum variation from left to right and front
to back of one inch.
WHEELIE BARS:
Wheelie bars permitted at weight add
PSCA Required Decals:
Class Sponsor Decal
Borla Exhaust 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. 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 be 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
& 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
Registering For The Class:
All
XDR 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 XDR 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 XDR 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 XDR 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 XDR entries are allowed to tow
to staging lanes and after the track scales. All tow vehicles 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.
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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