Street Stock Rules

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Williams Grove Speedway 2010
Street Stock Rules & Regulations

RULE BOOK DISCLAIMER

The rules and/or regulations set forth herein are designed to provide for the orderly conduct of racing events and to establish minimum acceptable requirements for such events, and, by participating in these events, all participants are deemed to have complied with these rules. NO EXPRESS OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM PUBLICATION 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 a participant, spectator or official.

The race director shall be empowered to permit minor deviation from any of the specifications herein or impose any further restrictions that in his opinion do not alter the minimum acceptable requirements. NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM SUCH ALTERATION OF SPECIFICATIONS. Any interpretation or deviation of these rules is left to the discretion of the officials. Their decision is final.

ELIGIBLE MODELS - North American made passenger cars from 1950 with a wheelbase of no less than 108 inches originally. Wheel base must remain stock except cars with a wheel base of more than 108 inches may be shortened to 108 inches with approval of speedway tech personnel on a case by case basis. No jeeps, trucks, sports cars, convertibles or station wagons.

1. Body and frame must be same make, model and year. No interchanging. Body must be stock in stock location on frame. Stock firewall mounts and stock body mounts must remain in stock position. Rubber grommets may be removed from body mounts. No chopping, channeling or modifying. This means stock roof post. STOCK MEANS STOCK. All glass, lights, trim and other objects that may come loose should be removed. Windshield permitted. No side skirts. Body panels must be bolted not dzus buttoned. Rocker panels can be fabricated but must be steel and remain stock appearing.

2. Must be complete steel body or stock appearing body. All body panels must be steel. If using stock appearing body, all lines and bends must match OEM body.

3. Must have front and rear firewall. Front firewall must be stock in stock position. In case of rust, front firewall may be patched but not removed. A full firewall of metal must be installed between driver and fuel cell.

4. Must have a full factory floor to back of driver's seat. In case of rust, floor can be patched, but it can not be removed. Full factory floor must remain intact on all uni-body cars from front to back to prove originality of frame rail location.

AFTERMARKET FLOORPANS and FIREWALLS OPTIONAL TO THE FOLLOWING SPECS:

A) FIREWALL AND FLOOR PANS MUST BE MADE OF 20 GAUGE STEEL

B) THE TUNNEL BESIDE DRIVER’S SEAT ABOVE TRANSMISSION CAN NOT BE MORE THAN 8” FROM FLOOR PAN AND MUST BE BENT AT 90 DEGREES AND GO STRAIGHT ACROSS TO RIGHT DOOR.

C) INTERIOR MAY BE ALUMINUM, MAY BE BOXED IN BEHIND DRIVER’S SEAT BUT MUST RUN DOWN TO X BRACE CROSS BAR.

D) RIGHT SIDE FRONT FIREWALL CAN BE NO FURTHER BACK THEN 29” FROM RIGHT FRONT SHOCK HOLE.

5. All cars must have a stock type front and rear bumper. Stock front bumper may be replaced with an aftermarket stock appearing bumper cover. Stay in manufactures line and comparable model. Must be approved if not similar body style. Non-visible reinforcing pipe can be used behind bumper, but it must be securely fastened to the frame. Car will be disqualified if bumper cover comes off and anything but a stock bumper is exposed. A bar may be used to protect the radiator as follows. A 3-piece design using a 1-1/4 inch pipe may be constructed which is no wider than the frame rails and no higher than 10 inches off the frame rails. A maximum of two bars may be attached to the top of the bumper from the protective hoop. Rear bracing of hoop optional. Do not build a battering ram. Wrecker hook up point must be included. If bumper becomes loose or fells off during an event, car will be disqualified.

6. If rub rails are used, they must be a single rail design and be attached flush with the body contours. Skid rails must be tight to the body except a kick out of skid rail permitted 18 inches in front of rear tire but may not extend past tread of any tire at any time.

7. No sharp edges inside or outside of the cars, this includes bumpers.

8. All doors must be welded or bolted shut.

INTERIOR

1. Seats and upholstery must be removed and a racing seat properly installed and firmly anchored. Driver's seat may be no farther back than 56 inches measured from the vertical section of the firewall to the back of the seat cushion area.

2. Gas tank to be removed and a fuel cell is mandatory. Fuel cell must be encased in an approved material and be secured with a minimum of two steel straps two inches wide.

3. Floor of trunk must be removed.

4. No sheet metal work permitted in driver's area from dash to rear of seat. Interior sheet metal may not box around driver's seat.

5. Battery to be securely fastened. If battery is located in driver's compartment it must be covered to prevent leakage in case of a crash.

6. Roll bars will be a four-post design boxed frame, well braced using at least 1-1/2 inch OD pipe or tubing with a wall thickness of .095 minimum. The bars must be welded to the top of the frame and extend at least four inches above the driver's head. Driver's side must have a minimum of four protective side bars, three bars on the opposite side of the cage. Two bars must run from the top of the cage to the rear frame section. No threaded pipe or pipe fittings in cage. Roll cage kits permitted.

FRAME AND SUSPENSION 1. Frame must be the same make, model and year as body used. No interchanging. No after market kit frames permitted. No down tube frames.2. Cars of uni-body construction must use a frame of 8 inches in circumference (2x2 box tubing) to tie front and rear frame rails together. Eight inch circumference tubing a minimum requirement.3. All frames may be reinforced with round steel tubing to the front fire wall and to the rear fire wall but all frame components must remain in stock position.4. No part of chassis may be moved or relocated from its original position except where noted.5. Rear sub-frame must remain stock, in stock position with stock dimensions. Rusted areas may be reinforced with a steel channel iron or tubing.

6. Must use original suspension that matches the type of car being used. Spring part of suspension must remain stock. Must be original stock type mounted in stock position on stock fixtures and be leaf for leaf, coil for coil or torsion for torsion. Rusted areas of stock fixtures may be replaced with other material but must remain in stock position. No straight front axles.

7. Stock appearing rears and stock appearing Ford 9 -inch rears permitted. No Grand National or floater rears permitted. Rear must be locked. Must be mounted in stock position on stock fixtures. No offsetting. Interchanging of rears permitted within manufacturers line, integral type for integral type or non-integral for non-integral. Any steel spool, replacement axles and C-clip eliminators permitted. Minor modification to length of stock rear control arm permitted but must remain stock.

8. Stock spindles only. Must be made by manufacturer of car being used. No interchanging.No NASCAR type spindles. Front upper control arm may be a tubular aftermarket non-adjustable arm mounted on stock mounts.

9. No engine set back. Steering quickeners permitted.

10. No double shocking. Racing shocks permitted, front and rear shock location optional. If stock spring pockets are rusted or damaged, they may be remanufactured but must closely resemble stock and remain in original stock position. Shock mounts may be relocated. Weight jacks permitted.

11. Steel wheels only 12 inch maximum width. Racing wheels recommended. If stock wheels are used, wheels must be reinforced with a 1/4 inch steel center plate. Reverse racing rim permitted, beadlocks permitted on any wheel. No wheel covers of any kind. Foam mud plugs permitted.

12. Four wheel brakes must be in good working order at all times. Rear disc brakes optional. Aftermarket master cylinder permitted. Master cylinder may be moved to inside driver's compartment on inside of firewall. In-line proportioning valves permitted. No plastic brake lines.

13. FoMoCo chassis cars {T-Birds and Cougars) from 1983 thru 1988 with a 104 inch wheel base may be stretched to meet the 108 inch wheel base rule by adding a section to the floor pan. The body would be made to fit the chassis in a similar manner.

ENGINES

1. Production V-8 engines limited to 366 cubic inches and must be in chassis originally cataloged by manufacturer. Block must be a standard production block that was less than 366 cubic inches originally. No aluminum blocks. Stroke to remain stock. Crankshaft must be factory production or stock dimension after market steel or cast iron crank with stock stroke. No swapping of cranks. Crank may be turned to a maximum of .040 under. Chevy bow-tie and Ford SVO blocks permitted. Ford SVO crank with part number M6303-D351 permitted. MOPAR high performance crank with part number P4120312 permitted. Minimum crankshaft weight is 46 pounds.

2. Production rod from a V-8 engine less than 365 cubic inches. Any stock dimension steel rod (no titanium) may be substituted. Modification to rod length prohibited. Rods, block and crank to be used in the same combination that the factory originally manufactured. Ford permitted to use 6 inch length rod with approved SVO crank.

3. Flat top pistons only. Zero deck, piston may not be above block.

4. Option I - Any factory steel head. Must have a 60 cc minimum combustion chamber. No aluminum heads. No relocating of rocker arm studs. Option II - Vortec and DART/World Products Sportsman II steel head with casting number of 1037 permitted as follows: Must have a 60 cc minimum combustion chamber. No relocating rocker arm studs. No porting or polishing. Matching ports in intake port of head only. Depth maximum for matching port is 3/4 of an inch. Lifter bore must remain stock. The valve seat area can be cleaned up using a maximum 80-degree grinding stone. No additional hand or machine work permitted. CC measurement of intake runner of head to remain stock with the exception of matching port.

5. Production valve or production replacement valve using steel or stainless steel only. Any spring and retainer permitted. Roller rockers permitted. No roller cams. No dry sump systems.

6. Block must be cast iron. Must have been installed on an assembly line automobile. All factory identification numbers and or part numbers must remain on crank and heads. Main bearing caps must be iron or steel. Electric fans permitted in addition to use of

7. Limited to one two barrel carburetor that was originally manufactured as a two barrel carburetor. No predators or dominators. 8. Any approved aluminum intake other than a smoke ram or tunnel ram. Intake height to be a maximum of 8 inches measured from the top of the carburetor bowl using a straight edge from the bowl to the #3 or #4 runner of the intake manifold.

9. Headers permitted, but must be chassis type headers only with collector and extend to or beyond firewall. No 180 degree or up and over type headers.

10. Starter must be in working condition at all times. Battery ignition only. Stock distributor with after market components permitted, no modification to housing. No MSD ignition. Ford may use the Ford ignition box.

11. Gasoline only. No electric fuel pumps or pressurized fuel systems.

12. Stock clutch or stock appearing after market clutch of stock diameter only.No aluminum flywheels or pressure plate. No mufti-disc clutch or racing clutch. Must use a stamped steel blow proof bell housing with a 2 x 3 inch inspection hole located 3 inches from the transmission mounting surface for clutch inspection.

13. Stock manual transmission or stock automatic transmission only with a working reverse. Automatics must use a working stock appearing torque converter.

14. Protest fee as per general rules. Any car disqualified receives no payoff for that event.

GENERAL RULES - All Drivers must use Raceceiver radios

1. Tires to be either a 10 inch DOT approved tire or an 11 inch HOOSIER spec track tire. Compound must be D-15 or D-35. A D-45 or D-55 may be used on the right rear only. Tire must be stamped with HTMA on sidewall. No tire bleeders. HTMA to be highlighted.

2. Quick release safety belt and shoulder harness must be installed.

3. Roll bars to be padded in driver's area. Full windshield screen for driver protection strongly recommended.

4. Driver responsible for wearing an approved racing helmet and an approved fire retardant drivers uniform and gloves.

5. A window net or arm restraints to be used.

6. Cars must weigh at least 2800 pounds including driver after any event.

All weights to be securely fastened and painted white with car number painted on weight. Must use ½ inch or larger bolt to fasten weight and weight must be securely fastened. No weight added above the deck.

7. All driveshafts to be painted white.

8. All cars must be presentable to the public at all times and must be clearly identified with numbers 18 inches high.

CAR NUMBERS MUST BE REGISTERED WITH THE SPEEDWAY,

NO DUPLICATE NUMBERS. THE ABOVE RULES ARE INTENDED TO BE A GUIDELINE IN CONSTRUCTING A CAR. THE DECISION OF TRACK OFFICIALS IS FINAL.

CALL BEFORE YOU BUY OR BUILD.

Williams Grove Speedway, 1 Speedway Drive, Mechanicsburg, PA 17055

717-697-5000