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Williams Grove Speedway 2012
Street Stock Rules & Regulations
***Please note changes for the 2012 season
will be in
BLUE BOLD
PDF file to print or save >>
click here
updated 2/1/12
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.
Interchanging permitted within “sister” cars only – i.e.
Chevelle, Grand Prix and Monte Carlo; Camaro and
Firebird etc. Prior approval for any interchanging of
frame and body must obtained from a track technical
official.
Body must be stock in stock location on frame.
Stock firewall mounts and stock body mounts may be
removed but the firewall on the left side must be no
more than 20” from the left front weight jacker and the
firewall on the right side must be no more than 29” from
the right front weight jacker.
No chopping, channeling or modifying.
All roof pillars must be stock in shape but can be
outer skins only with support being provided by the roll
cage (car must appear “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.
Full firewalls must be present between driver and engine
compartment and driver and fuel cell. Aftermarket floor
pans and firewalls must be constructed of steel no
thinner than 20-gauge.
4.
All cars must have a stock type front bumper.
Rear bumper may be tubular.
Stock front bumper cover may be
replaced with an aftermarket stock-appearing bumper
cover
of
same manufacturer and comparable model;
variations must be approved. Non-visible reinforcing
pipe may be used behind bumper, but it must be securely
fastened to the frame.
A rear bumper cover must be present at the start of any
event. 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 is optional. Do not build a
battering ram. Wrecker hook up point must be included.
If bumper becomes loose or falls off during an event,
car will be disqualified.
5. 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.
6. No sharp edges inside or outside of the
cars, this includes bumpers.
7.
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 60 inches
measured from the vertical section of the firewall to
the back of the seat cushion area.
2. Fuel tank must be replaced with a fuel cell which
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. 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.
5. Roll bars must 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.
6.
All roll cage seams and joints must be fully welded.
7.
The tunnel beside the driver’s seat and above the
transmission and driveline cannot be more than 10 inches
higher than the floor pan, must be bent at 90 degrees
and extend to the right door area.
8.
Interior may be aluminum and may be boxed-in behind
driver’s seat but must extend down to “X”-brace
crossbar.
9.
A steel driveline hoop is mandatory.
10.
Area of floor under driver’s feet must be reinforced
with at least 1/8-inch plate, steel or aluminum.
FRAME AND SUSPENSION
-
1. Frame must be the same make, model and year as
body used
with interchanging allowed only as discussed in
“Eligible Models” section.
No aftermarket kit frames permitted. No down-tube frames.
Body and frame must match rear suspension type –
coil-spring bodies on coil-spring frames, leaf-spring
bodies on leaf-spring frames and torsion bar bodies on
torsion bar frames only.
2. Cars of uni-body construction must use a frame of
eight inches in circumference (2”x2” box tubing) to tie
front and rear frame rails together. Eight-inch
circumference tubing is 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
may be fabricated from tubing
duplicating length and location of factory rail – diagrams of
Chevelle/Monte Carlo and Camaro/Firebird frames follow (other frame
types will be added as needed).
Rusted areas may be reinforced with a steel
channel iron or tubing.
6.
Spring part of suspension must remain stock and be
mounted in stock position on stock fixtures.
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 made by
manufacturer of car being used only. No interchanging.
No NASCAR type spindles. Front upper control arm may be
a tubular aftermarket non-adjustable arm mounted on
stock mounts.
9.
Engine set-back is not permitted. The #1 cylinder spark
plug on Chevrolet small-block V8s must be at least 1”
forward of the left upper ball joint or weight jacker.
Steering quickeners are 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 and beadlocks are permitted
on any wheel. No wheel covers of any kind. Foam mud
plugs are permitted.
12. Four wheel brakes must be in good working order
at all times. Rear disc brakes are 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.
14.
No McPherson strut suspensions are permitted.
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 cast
iron block that was less than 366 cubic inches
originally. No aluminum blocks. Stroke to remain stock.
Crankshaft must be factory production or stock dimension
aftermarket steel or cast iron crank with stock stroke.
No swapping of cranks. Crank may be turned to a maximum
of .040 under. Chevrolet Bowtie and Ford SVO blocks
permitted.
Ford engines must use a cast iron or forged steel Ford
production crankshaft having the stock stroke of a 351
Windsor engine and weighing at least 46 pounds.
MOPAR high performance crank with part number P4120312
permitted. Minimum crankshaft weight is 46 pounds.
2. Connecting rods must be production items from a V8
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 travel above block deck).
4. Cylinder head options:
Option I - Any factory
steel head or bowtie head having a 60cc 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 60cc minimum combustion chamber. No
relocating rocker arm studs. No porting or polishing
except for 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.
Option III - Vortec
heads permitted with approved casting numbers of:
Small port #25534351 and
Large port #25534445 (supersedes #25534371).
RHS ProAction cylinder heads permitted for Ford
engines with approved part numbers #35301, #35302,
#35303.
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. All factory
identification numbers and or part numbers must remain
on crankshaft and heads. Main bearing caps must be iron
or steel.
7.
Limited to one two-barrel carburetor that was originally
manufactured as a two barrel carburetor
for
original equipment use, i.e. Carter, Holley, Rochester,
etc. No Predators, Dominators
or custom-made carburetors.
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;
may be inside-the-rail, over-the-rail or 180-degree with
collector and extend to or beyond firewall. “Tri-Y”
style not permitted.
10. Starter must be in
working condition at all times. Battery ignition only.
Stock distributor with aftermarket components permitted,
no modification to housing. No MSD ignition. Ford may
use the Ford ignition box.
11. Gasoline only;
no additives of any kind.
No electric fuel pumps or
pressurized fuel systems.
12. Stock clutch or stock appearing aftermarket
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
2x3-inch inspection hole located three 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.
TIRES
Only an 11-inch Hoosier brand tire (either Hoosier
Economy or Hoosier Spec) is permitted for competition.
The largest tire permitted is the Hoosier Economy 11
inch tire measuring 16.75 inches from sidewall to
sidewall with a 93 inch circumference. The tires must be
a 1300/D-15 or harder compound.
GENERAL RULES
1. All drivers must use a Raceceiver
radio.
Failure to have a working radio can result in
disqualification.
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. Drivers are responsible for
wearing an approved racing helmet and an approved fire
retardant driver's uniform and gloves.
5. A window net or arm
restraints to be used.
6.
Cars must weight at least 3,000 pounds including
driver after any event.
7. All weights to be securely fastened and
painted white with car number painted on weight.
Must be 1/2 inch or larger bolt to fasten weight and
weight must be securely fastened. No weight added
above the deck.
8. All driveshafts to be painted white.
9. All cars must be presentable to the public
at all times and must be clearly identified with numbers
18 inches high. No duplicate numbers.
10.
All electronic control devices are illegal,
including traction control systems. Penalty for
first offense shall be forfeiture of points and money
won that day, a two-race suspension and a $500 fine that
must be paid prior to the car being entered in another
race at Williams Grove Speedway. A second offense
will have a penalty of the forfeiture of ALL points for
that season, money won that day, a five-race suspension
and a $1,000 fine. Penalties for any subsequent
offenses will be determined by track management.
Cars from other speedways are welcome
to compete at Williams Grove Speedway but are expected
to comply with all Williams Grove engine, tire and
weight rules. A one-race grace period will be allowed
for compliance with all other rules.
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 717-697-5000
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Tues. thru Thurs. 9AM - 4PM
Fri. 11AM to end of race*
Sat. 2PM to end of race*
*
= providing we race
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Williams Grove Speedway
1 Speedway Drive
Mechanicsburg, PA 17055
Phone: 717-697-5000
Fax: 717-795-7216
Email:
williamsgrove@verizon.net
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Located at
the old Williams Grove
Amusement Park
Vendor spaces only $10,
space size is 15' x 25'
For information call 717-766-7215
For vendor space outside,
call Troy at 717-385-9015
Inside vendor space,
call Mim at 717-243-7113
For directions
click here
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