2013 Siskiyou Motor Speedway Pro-Stock Rules

 

OUTLAW PRO STOCK RULES
2013

Printable Version
1. MODELS
A. American sedans ,hardtops and convertibles
B. 108 inch wheel base minimum.
2. CHASSIS:
A. Factory production complete full frame, 1960 or newer parallel American
passenger car frame clips or frame clip from unibody cars.
B .Full frames may cut perimeter off to resemble uni body clips.
C .No fully fabricated chassis allowed.

3. BODIES:
A. Full steel, aluminum or fiberglass body, must be stock appearing.
Side Panels must have two (2) breaks.
B. 0.40” thickness Aluminum, or .0625 plastic Flat nose allowed…center of
front wheel to farthest point of nose a maximum of 45 inches
C .All body parts must remain stock appearing and remain in place
unless otherwise approved by tech-man. Aluminum hood, fenders, doors
and trunk lid allowed with a minimum of 0.40” thickness. Roof MUST be
stock appearing.
D. Race car appearance should be kept neat and clean at all times.
E. Fenders may be trimmed and rolled for tire clearance.
F. No uncovered holes in hood or trunk except for air cleaner.
G. Rear spoilers optional. Maximum 6’ blade length attached to
trailing edge of deck lid.
H. All chrome and trim pieces must be removed from body panels.
I. Doors must be securely fastened.
J. Wind shield must have a minimum or 3 1/4” solid steel or ½”
tubing in front of Driver for protection.
K. OEM body must run stock appearing front bumpers, plastic
optional. After Market body must run molded plastic stock appearing
front bumper, Aluminum Sheet metal nose optional.
L. Stock firewall optional. Replacement firewall and doghouse optional
M. Bumpers must be braced to prevent hooking to other cars but not to exceed
the width of the outside of the tires.
N. After market body must fall within the attached measurement guidelines.
O. Nerf bars will be no wider than the tires. Rub rails to be attached flat to Body.
Both are made a maximum of 1 1/4” tubing with no open- end tubes.
P. All cars are numbered with a minimum of 18”numbers on both sides and top of car.
N. NO REFLECTIVE NUMBERS! Numbers to contrast Body color.

4. ENGINES
A. Any size or make V-8
B. Any cast- iron head. No aluminum heads or blocks.
C. Engine location: #1 spark plug can be no further back than the middle of lower
ball joint. If location is further back it must be moved forward.
D. Any single carb manifold.
E. Any hydraulic camshaft. No rollers.
F. Any style header allowed. Must run through muffler.
G. V-8 stock rocker arms mandatory. No roller rockers or roller tips.
H. No electronic traction control or timing control devices of any kind.
I. Any single carburetor allowed.
J. Any gasoline fuel allowed. No nitrous oxide, nitro methane or alcohol.

5. FRONT SUSPENSION
A. Must be unaltered OEM parts.
B. Lower control arms must be in stock location. Screw in ball joints O.K.
C. Upper control arms may be after market and do not have to be in stock location
( rod end type o.k.)
D. Steering box must be stock OEM and must remain within original bolt pattern of
frame used.
E. No rack and pinion.
F. Tie rods can be radius rod type with stock type inner tie rod end and a minimum of
5/8” rod end outer weight jacks optional.

6. REAR SUSPENSION
A. Must be stock type 3 link, 4 link, or stack leaf. Mountings can be adjustable
and multi positioned. No aluminum components.
B. Coil springs must be mounted on top of rear end housing within 4’’ of center line
of rear end housing, forward or backward. Cannot be mounted on trailing arm.
C. Leaf springs may use sliders.
D. Top link on coil springs 3 link, can be no longer than 28” center to center.
E. Heim joints and swedge rods allowed.
F. NO coil springs less than 4 ½” O.D.
G. Steel Body Non adjustable racing shocks allowed:(1) shock and spring per wheel.
Weight jacks are allowed.
H. “J bars allowed in place of pan hard bar. No cushions or biscuits. The following items
specifically cannot be used: Coilovers, coilover eliminators, biscuit bars, pull bars, push bars,
lift bars, mono leafs, bird cages, Reese bars, traction bars, spring bars, any bar that goes from
rear end housing, tward rear of car, brake shocks, brake floaters, or any other non stock type item.

7. REAR END
A. Any OEM manufacture type rear end will be allowed.
B. Locking differential or floater rear ends will be allowed.
C. No aluminum housing or carriers.
D. No gold track, True track or similar type, traction controls.
E. Open mini spool, full spool, or welded spider gears only.

8. TRANSMISSION
A. OEM standard or automatic transmission only. Must have two (2)
forward and one (1) reverse gear.
B. All automatic transmissions must run converter.
C. Standard transmissions must run steel or iron flywheels and standard 10 ½”
or 11” OEM clutch. No aftermarket racing clutches. Any steel or iron flywheel
allowed.
D.180 degree scatter shield made of 1/4” steel plate MANDATORY on both
automatic and standard transmissions. Blow proof bell housing optional.
E. No aluminum bell housing.

9. COOLING SYSTEMS
A. Any radiator okay. Must remain in front of engine.
B. All radiators must have overflow directed at ground inside frame rail.

10. SEAT BELTS
A. High back, left turn, aluminum seat only. No baja seats, stock seats, etc.
B. Seat must be mounted to roll cage and secured to frame.
C. 5 point seat belt MANDATORY. No old, faded or fraying seat belts. 3”
lap and shoulder harness MANDATORY. All belts must be in good
appearing condition.
D. Belts must be mounted to roll cage or frame.

11. ROLL CAGE
A. Roll cages must consist of continuous hoops not less than 1.500 “
outside diameter and must have a wall thickness of at least .095”
B. Cages must be mounted to frame in at least 6 places. Roll bar padding driver compartment
is required. Drivers head cannot protrude above cage with driver strapped in driver seat
and his helmet on. Must have at least one cross bar in top of halo of roll cage.
C. Low carbon, mild steel, tubing is recommended. No brazing or soldering.
D. A minimum of Three (3) Driver side door bars, three (3) on passenger side at least
1 ½” O.D. And must be as parallel with the ground as possible and perpendicular to the driver
to provide maximum protection. The sidebars must be welded to the front and rear of the roll
cage members. Steel door plates are required: 18 gauge or .049 “ minimum metal thickness.
Must be securely welded to outside of door bars on driver side. Plate must cover the area
from the top of the door bar to the bottom door bar and from the rear down post to 5” in front of
of the seat
E. No brace bars forward of the cage may be higher than hood height. Main cage no further than
the engine plate.

12. WHEELS AND TIRES
A. Any steel wheel: maximum 8” wide Racing wheels.
B. Stud size: minimum 5/8” must stick through lug nut.
C. Bead locks allowed on right rear tire only. No bead locks, screws, or other tire locking devices
on any other tire.
D. IMCA G60 type tire allowed. SOS american racer G60 allowed. to mount on 8” wheel only
E. Siping and grooving (maximum 3/8”) allowed.
F. Hoosier 10” Slicks Take offs, #2025 #2035 #2045.
To mount on 8” or 10” steel wheels

13. BRAKES
A. Rotors and calipers must be stock or stock replacement type only.
B. Vented rotors mandatory.
C. Pedal assemblies optional.
D. Must have working brakes on demand on all four (4) wheels.
E. No shut off valves allowed.

14. SAFTEY
A. Helmets are required and must be rated snell 95 or newer & of similar
quality. Helmets must be worn at all times while on the track and must
accompany the vehicle at time of inspection. Approved fire retardant
driver suits, neck braces and gloves must be worn by the driver. Fire
retardant shoes are highly recommended.
B. Full size (16×20) window net is required unless arm restraints are used.
Five point safety belts, sub belt and shoulder harness required. No faded,
fraying or old belts allowed. The shoulder harness must be mounted inside
the frame rail and ahead of the rear tires.
C. A clearly marked “ on & off “ switch within easy reach of the driver is required. A 360-
degree drive shaft loop is required and must be made of 1/4”x 2” steel strap or 1 inch
tubing. Must be mounted within 6 inches of the front of the driveshaft. Drive shafts must
be painted white and must be made of steel.
D. All cars must have a minimum 2 ½ lb fire extinguisher mounted in a quick release
bracket that is within easy access of the driver.
E. All cars must have a hook, chain or eye welded to the front of and the rear of the car
for quick and easy removal from the track. Failure to do so will result in a fine of $25.00.
F. Racing fuel cells are required and must be mounted by at least two (2) solid
Steel straps that are a minimum of 2 x 1/8 inch. Fuel cells must be mounted in steel
containers and must be mounted securely behind the rear axle. Fuel cells must be
protected by roll cage tubing that extends past both sides of the fuel cell.
Fuel are limited to maximum of 32- gallon capacity and must have a rollover valve in
the vent. Fuel cells must be mounted at least 4” from rear bumper and cannot have the fuel
pick- up underneath the cell.
G. Exhaust system must be mounted so that gasses are directed away from cockpit and any
area where a fuel spill could occur.
H. Battery must be mounted securely and shielded properly.
I. Any weight added must be made of steel or lead, securely mounted, and must be painted
white with the car number on it.

15. MISCELLANEOS
A. No electric fuel pumps.
B. Engine must be self starting.
C. Battery must be mounted outside of driver compartment.
D. Steel drive line mandatory. Must be painted white and must have a strap
within 12 inches from front: 1/4” x 2” strap or 1” tubing: 360 degrees minimum.
E. NO REAR VIEW MIRRORS!
F. THE WINNER OF THE MAIN EVENT WILL START THE NEXT MAIN EVENT
AT THE REAR OF THE FIELD NO MATTER WHAT THEY QUALIFY FOR THAT
THAT NIGHT.

RULES WILL BE TECHED TO THE INTENT:
NOT TO THE LETTER!
TECH MAN DECISION IS FINAL.
IF IT DOES NOT SAY YOU CAN……..
THEN YOU CAN’T