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2003 Pro Stock Rules and Car Specs

Farley, West Liberty, Dubuque (12-01-02)

YEAR/BODY TYPE: Stock appearing nose section is required. Nose extensions may not flair out, they must run parallel with door panels. Rear roof panels may be mounted per body style of car using. Left and right side roof panels must be the same length and design. See attached for roof and window posts dimensions. Rear of car must be enclosed between bumper and deck lid, attached top and bottom. Rear filler must be rigid and tight to the deck. Minimum filler width is frame rail to frame rail. Maximum deck height is 36" from the ground. Maximum spoiler height from deck is 8" inches. Spoiler braces a maximum 8" tall and 16" long. Rear quarter panel may be no longer than 52" from the center of rear axle to rear of deck. The floor pan of the driver's compartment from drivers seat forward and up a minimum of 6" in front of feet must be made of one sheet .125 thickness metal.
WHEELBASE: Minimum 103 inches, no tolerance.
ENGINE: Any size engine allowed. Any intake is allowed, with a maximum of 1 1/2" allowed between top of intake and bottom of carb. One 2-barrel Holley 4412 (500 cfm) allowed, air horn mandatory. Starter must be operable. No aluminum heads or block allowed. Valve angle must be within 1 1/2 degree of OEM. Roller rockers and cam allowed. No dry sumps allowed. All cars will be required to be equipped with a round dry element type air cleaner, maximum height four (4) inches. Maximum diameter seventeen (17) inches. All air cleaners are required to have a complete metal top and bottom. No carburetor air dams or devises permitted to increase the airflow to the carburetor, either inside or outside of the air cleaner, and must rest on carburetor.
CHASSIS: Cars with a fabricated front stub are allowed a maximum 6" engine setback. Cars with a factory front stub will be allowed an 8" setback. To be considered a factory front stub, you must retain stock steering and idler arm, lower control arms, and standard frame rail.
WEIGHT: Standard weight is 2600 lb., post race. Cars with a stock stub will be allowed a 150 pound break. Cars running a GM 358 CI motor or less, a Ford or a Dodge with a 364 CI motor or less will also be allowed an additional 150-pound weight break.
Examples; Fabricated Stub, Big Motor-2600 lb.
Fabricated Stub, Small motor-2450lb
Stock Stub, Big Motor-2450lb
Stock Stub, Small Motor-2300lb
BATTERY: Must be mounted in a safe and secure manner.
STARTER: Starter must be operable and start car.
FUEL: Mechanical fuel pump only, mounted in stock location. Fuel must be gasoline only. The gasoline shall not be blended with alcohol's, ether's or oxygenates and it shall not be blended with aniline or it's derivatives, nitrous compounds, or other nitrogen containing compounds. No icing or cooling of the fuel system is permitted.
RADIATOR: Any type of radiator is allowed which will fit under the hood with minor cutting or altering stock fit of hood.
BRAKES: All cars will be required to be equipped with four (4) wheel operational brakes. Brake rotors will be required to be made of cast iron or cast steel; calipers may be made of steel or aluminum. CARBON FIBER OR CERAMIC BRAKES WILL NOT BE PERMITTED.
WHEELS: 10 inch wide steel. Beadlock on right rear only. No aluminum wheels.
TIRES: Required tires are Hoosier Dirt Bozz 285-265-255/65-15. Medium compound only allowed. Must durometer at 50-pt minimum at any time.
REAR ENDS: Any type of truck or floater type allowed. Quick change allowed.
TRANSMISSION/CLUTCH: Any type transmission allowed. Flywheel scattershield is required on all clutch transmissions. No in/out boxes allowed. Brinn and Bert type transmissions allowed. All cars must have a reverse.
WEIGHT:. All weights must be painted white and have the car number on it. They must be securely fastened with 7/16 or larger bolts. Weights must be in car, but outside driver's compartment. No weight allowed on rear bumper or fuel cell braces.
SAFETY, SEAT BELTS, SEATS, HELMETS, AND WINDOW NETS: All seats must be made of aluminum or steel and approved by Officials. All seats will be required to be mounted to the frame or the roll cage of the car. All cars will be required to be equipped with a minimum 5-point harness. All belts will be required to be mounted to the frame of the car or to the roll cage. Helmets should be of full-face shield type and are subject to inspection. All cars will be required to use a full size window net in the driver's door at all times. Fire resistant shoes & gloves recommended. Fireproof drivers suit required.
ROLL BARS: Four-point roll cage of suitable tubing base and upright members shall be welded solidly to the frame. Cage shall be braced to rear frame and diagonally side-to-side between rear uprights. At least 3 drivers side bars between the 2 uprights running horizontally, outside diameter of the tubing must be at least 1 1/2" OD with .095 wall thickness. Drivers side vent bar and a diagonal bar in the halo are also required. Flame retardant roll cage padding required on all pipes within reach of driver.
MIRRORS: NOT ALLOWED
NO TRANSMITTING OR RECEIVING DEVICES
FUEL CELL/GUARD
: An approved manufactured fuel cell with a maximum capacity of 32 gallons. Fuel cell will be required to be encased in a metal container. All fuel cells must be equipped with a rollover valve in the vent fitting and in the fuel fill. Fuel cells must be required to have pick up location on top of cell. It is highly recommended that all fuel cells be equipped with foam. Fuel cell will be required to be mounted to the frame of the car. Fuel cell will be required to be secured with straps or tubing around it. Fuel cell cannot hang below the bottom of the rear end tubes with the car setting at race height. All cars will be required to be equipped with a fuel cell guard that is mounted separately from the fuel cell and comes to the bottom of the fuel cell. Minimum 1 " tubing must be used for fuel guard.
FIREWALLS: Rear firewall must separate driver's compartment from rear wheels and fuel cell. Front firewall must be solid, with all holes covered.
TOW HOOKS: All cars must have a tow hook on the front and rear minimum 3/8 cable. Rule Will Be Enforced.
DRIVESHAFT: An approved driveshaft safety loop must be used at a point 6" back from the front universal joint. Minimum requirement 1/4" x 2". Drive shaft must be painted white. No carbon fiber driveshafts.
APPEARANCE: Paint all cars neatly and brightly. Bright and light colors are recommended. Numbers will be assigned; they must be painted neatly on both sides and roof of car. Numbering must be done using minimum 24" tall with 3"width numbers. Numbers must also appear on rear filler panel. Must have minimum 6" tall number visible from the front.
EXHAUST/MUFFLER: Collector type headers are mandatory, and will be required to exit under the car and extend rearward to a point behind the bellhousing. Headers must exit under the car and parallel to the ground or may exit left side of car. All competing models will be required to use mufflers to meet a maximum noise level of 98 DBA at 100 feet.

"THE RULES AND/OR REGULATIONS SET FOURTH HEREIN ARE DESIGNED TO PROVIDE FOR THE ORDERLY CONDUCT OF RACING EVENTS AND TO ESTABLISH MINIMUM ACCEPTABLE REQUIREMENTS FOR SUCH EVENTS. THESE RULES SHALL GOVERN THE CONDITION OF ALL RACING EVENTS. AND, BY PARTICIPATING IN THESE EVENTS, ALL RACING MEMBERS ARE DEEMED TO HAVE COMPLIED WITH THESE RULES. NO EXPRESSED OR IMPLIED WARRANTY OR SAFETY SHALL RESULT FROM PUBLICATION OF, OR COMPLIANCE WITH THESE RULES AND/OR REGULATIONS, THEY ARE INTENDED AS A GUIDE FOR THE CONDUCT OF THE SPORT AND ARE IN NO WAY A GUARANTEE AGAINST INJURY OR DEATH TO PARTICIPANTS, SPECTATORS, OR OTHERS".

2002 Pro Stock Rules and Car Specs.doc Microsoft Word Document

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Copyright 2001-2003 Simmons Promotions Inc.
Simmons Promotions Inc.
27317 Olde Farley Rd
Farley, Iowa 52046
SPI office phone # 1-563-744-3620
Fax # 1-563-744-3598
Last modified: August 10, 2003

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