Section 11
TENTATIVE
2010 Street Stock division
Open to any American Made Car 1960 or newer.
Read Sections 1-11 first as they apply to this class
Track Raceceiver Mandatory
In the event your car does not fit the rules, but you wish to compete, please contact Black Rock Speedway ahead of time so we may make a determination on your car before you arrive.
Engine cubic inch displacement and the car weight must be displayed on the hood & the side of the race car.
ENGINE: V8-ONLY GM, FORD,
CHRYSLER-Motor limits as follows:
1960
or newer American manufacturer brand rear wheel drive passenger car. NO trucks,
SUVs, or jeeps.
Minimum
wheelbase 107 with 1 tolerance.
Full frame cars can have rear frame from center of
axle back replaced with 2x3 tubing.
Unibody
cars can have the frame replaced with 2x3 tubing from 36 behind centerline of
front wheels. 2x3 tubing must go over the rear end housing.
Front
frame on all cars can be replaced forward of the steering box and idler arm
only (front steer cars) with tubing.
All
suspension and steering components must be OEM and in stock mounting location.
Tie
rod ends may be replaced with hiem joints.
Steering
column may be replaced for safety.
Stock
configuration steel aftermarket non-adjustable upper a-arms are allowed.
Steel
body shocks front and rear. Stock or alternate locations allowed. One shock per
wheel (NO ADJUSTABLE SHOCKS ALLOWED) Max. allowable shock cost $100/ea.,
weight
jack bolts, adjustable spring spacers allowed.
No pull bars, torque arms, pan hard bars or leaf/coil type suspensions.
No three link rear suspensions.
Suspension
bushings can be replaced with solid type rubber bushings(NO MONO BALL TYPE)
Stock
front clip must remain NO fully tubed front clips allowed.
Factory
steel bodies may be gutted.
Roof
and hood must be factory items or equivalent, subject to tech approval.
steel or aluminum roofs must be a min thickness of
.040.
Fiber glass roof and hood only allowed subject to tech
approval.
NO
spoiler allowed of any type.
Side
body panels may be replaced with sheet metal or aluminum min .040.
Aftermarket
front covers mandatory rear bumper covers optional. NO late model style down force noses allowed. On late model style
bodies the rear section above bumper must be enclosed from the rear bumper
mounts to the rear deck. (NO
fiberglass). Front and rear bumpers must be constructed of tubing only no angle
iron or channel iron allowed.
Rear
bumper must run the entire width of body and is required to be a min of 12 in
height.
Any
and all rub rails must be tight against the body, enclosed on both ends as well
as anchored within 3 of each end.
All
crash rails/bumper supports must be located inside of body panels both front
and rear.
No sharp edges, open tube ends on bumpers or rub rails on outside of the
body.
Front
and rear bumpers may be replaced with tubing.
Cars
must look clean and presentable: body damage on cars should be repaired
promptly.
Max
body width will be 82
One
aluminum or copper/brass radiator must be located in front of engine.
Cast
iron water pump only.
Electric
fans allowed.
602
crate motor acceptable: must follow dirt motor rules.
All
engines must remain stock stroke for Mfg. and cu. in.
Maximum
cubic inch. GM 350+ .070 overbore; Ford 351+ .070 over bore; Chrysler 360+ .040
overbore; No
stroker engine of any type.
Stock
production blocks only.
1
pipe plug must welded in oil pan for viewing of rods and crank.
Stock
cast iron production heads, NO after
market or special order heads
Heads continued: NO hand
grinding, sanding, blending, or de-burring where a cutter or stone or stone
leaves off. The amount of metal you will be able to remove in the bowl areas on
both intake and exhaust will be determined by the same method used by dirt
inspectors. Method of checking will be as follows:
On
the exhaust side the header will be removed and the inspector will place a tool
in the port which will consist of a .531 diameter ball bearing welded to a
shaft. With the valve fully open, the ball will be placed against the valve
stem and moved to the full circle around the valve stem. If the ball drops down
through the valve seat in any position around the full circle of the valve stem,
It will be deemed illegal. On the intake side the intake will be removed
and the same procedure will be done using a ball size of .787. NOTE : these
methods of checking the head will hold true with a cold or hot engine.
Part
numbers on cyl. heads must be visual and unaltered.
DIRT
engine rules apply
NO race flow, cut down or none OEM valves allowed. OEM stock diameter
valves only GM,FD-11/32 min, Chrysler 3/8 min.
Steel
or aluminum roller rockers allowed. Max ratio 1.6.
No stud
girdles or (shaft rocker arm setups allowed, Except stock Chrysler OEM).
Gasoline
engines only---NO additives or
alcohol motors.
Any
flat tappet cam or hydraulic cam with functional NON-roller lifters allowed.
Flat
top pistons only.
NO piston may extend beyond the surface of block deck.
Stock
unaltered crankshafts or aftermarket equivalent only. Connecting rods must be
stock steel I-beam unaltered up to 5.7.
NO 6 rods allowed. NO lightning before balancing on
rotating assembly. Balancing and weight matching allowed.
Engine
setback is limited to the #1 spark plug even with the upper ball joint.
Factory
stock type distributors, points, HEI only. Aftermarket replacement parts
allowed. NO printed boards or traction
control devices of any type allowed.
No
180 degree headers allowed.
CARBURETOR:
Factory
stock two barrel or box stock Holley 4412, and for the 4412 to be legal it must
pass tech by track tools.
NOTE
track tools will not fit some Holleys, numbered 4412-S (may not pass tech)
Please
take note that if the tools dont fit, it will NOT be legal.
Cast
iron 2 barrel passenger type intake manifold, No marine or military type manifolds allowed. Aluminum intake
allowed as follows:
-chevy:
Weiand part #7547, 7547-1 & Edelbrock #5001 or #2101
-ford:
weiand part # 7515, 7516 & edelbrock #5021, 5081, 2760
-chrysler
Weiand part # 7545 & Edelbrock #5076
-chrysler
w-2 heads Weiand # 2920
NOTE
Only two unaltered carb
adaptors will be allowed: Part # BRP-377 & HV-301 or equivalent. With max
thickness of 1 1/8 including gasket.
NO bevel radius or tapering to said item.
ANY MODIFICATION TO ABOVE ITEMS WILL NOT
BE LEGAL
NO sideways mounted carburetors.
Wet
sump only.
No
electric fuel pumps.
Cast
iron unaltered exhaust manifolds or street type headers. Crossover headers
allowed NO interconnected headers
will be allowed.
Exhaust
must exit behind the driver.
Factory
stock automatic or standard transmissions only. All gears must workNO direct drives allowed.
Forward
and reverse must work with the engine running with foot on the brake.
Factory
stock steel flywheel and factory stock steel pressure plate housing, one clutch
disc only.
Stock
Size functional torque converter must measure min. 11-in. O.D. and have a drain
plug.
Steel
drive shaft only painted white.
Drive
shaft must have two hoops one no more than 6 from the front u-joint and one in
the middle of drive shaft.
Rear
suspension coil cars must use trailing arms that meet OEM specs, length and
location with 1 tolerance and have rubber bushings. (NO heims allowed).
Springs must be located in stock location on the top of the rear end housing.
Factory
stock rear ends only, Mounts must remain in stock location.
Ford
9" may use steel mini spool or steel full spool No Aluminum Spools or full
spools.
Leaf
springs allowed, Must be magnetic.
Floaters
allowed.
NO pull bars, torque arms, pan hard bars or leaf/coil type suspensions.
NO three link rear suspensions.
NO uniball suspension allowed in any location.
NO traction control devices.
NO quick change, posi, locker, gleason, or gold track rear ends.
8. WHEELS
& TIRES:
Maximum
8 wide steel rims, any backspace, No bead
locks except on Right Front and Right Rear.
BRS
Spec Tire will be American Racer 26.5/8.0-15DT, 27.5/8.0-15DT or equivalent of
other manufacturer, subject to BRS Track Approval.
Must
use at least ½ lugs with 1 racing lug nuts.
Grooving,
grinding and siping are allowed.
Tire
Plug allowed on RF and RR only.
NO chemical treating
NO wide five Rims or hubs.
Car
must have four fully functional OEM style calipers and rotors. Balance bars are
allowed with NO external or remote
adjusters.
A
foam filled fuel cell in a steel container is mandatory with a max capacity of
22
Fuel
cell must be securely fastened in the trunk area of the car.
Cell
over flow must have a role over valve either internal or external. A PVC valve
is recommended externally. This will prevent tech from asking you to remove the
foam from your cell for safety inspections.
Mufflers
are mandatory and must past track meter reading of 95 decibels.
Crossover
style headers are allowed, NON interconnected.
12. SAFETY:
Driver
seat must be located in stock OEM position . Seat must be a minimum of 25 in
front of the rear axle housing, measured to the rear bottom of the diver seat.
Gloves
and neck brace are required.
NO fiberglass seats.
Five
point racing safety harness is mandatory.
Head
and neck restraints are recommended.
Holes
through firewall should be kept to a minimum and sealed.
Window
nets are mandatory.
Highly
reccomended Min. 16 gauge Steel Plate Welded to out side of Left Side Drivers
rollcage bars.
Black Rock Speedway Tech reserves the right to check and deem any car in
competition illegal at Black Rock, regardless of home track.
Items
not covered in these rules are at the discretion of Black Rock Speedway Tech
Officials.
In
the interest of fair competition we reserve the right to address any over
competitive race car.
NO mirrors, two way radio or phone devises allowed. If any of these items
are found in a car competing at Black Rock Speedway, That driver will lose all
money for that evenings event as well as all points earned to date.
Minimum
weight with driver after heat and feature is 3000 lbs. CRATE engine cars 2800
.lbs
NO TOLERANCE.
TRACK
SCALES WILL BE USED TO DETERMINE WEIGHT!