Section 11
*** March 4, 2010 ***
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.
Lower control mounts must be in OEM 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 or
steel 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. (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 from ground.
All exterior side rails, front and rear bumpers WILL have rounded
edges and bolt heads. BRS will have a new Safety Tech. inspector specifically
for this enforcement and other safety items.
Mandatory loop bar or heavy chain front and rear for wrecker use is
mandatory and will be strictly enforced, max. length
is width of frame. No overbuilt bumpers "Cowcatcher's" will be
allowed.
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 D.I.R.T. 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 & G.M. 400 + .040 overbore; No stroker engine of any type.
All G.M. 400's will run 1 + 11/16" Restrictor plate Stock
item straight 4-hole, no additional machine work.
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. As per DIRT Rule Book: "SPECIAL NOTE- Only cylinder
heads produced by Chevy, Chrysler, or Ford prior to 1996 with their part and
casting numbers approved by DIRT and pass the ball check will be eligible to
run. Chevy Vortex and Ford GT NOT ALLOWED. Cast Iron OEM stock production only
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 distributors, points, HEI only. Aftermarket replacement
parts allowed. NO printed boards or
traction control devices of any type 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.
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.
No parts may be added or removed.
All cars running Automatic transmissions are recommended to run a
scatter shield safety blanket.
No hollow convertors allowed or any method of creating a direct
drive system.
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 or steel bushings
(NO MONO BALL). (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 full spool.
Leaf springs allowed, Must be magnetic adjustable sliders
allowed.
Full 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 Tires will be American Racer 26.5/8.0-15DT, 27.5/8.0-15DT, or
Hoosier #'s #36149 and #36155 or 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.
Exhaust
System and Muffler: Stock O.E.M. passenger car exhaust manifolds only.
Passenger-type only. No grinding, polishing, porting, or acid dipping. Headers
are allowed, 1 5/8" tube only. Step or merged collectors are NOT allowed.
180Ί Headers are NOT allowed, but crossover headers are allowed. Fully welded
exhaust highly recommended. Mandatory mufflers
may not be altered or modified from original design in any way. No 2 into 1
exhausts. All cars must have one muffler per bank of cylinders in working
order. Maximum exhaust pipe diameter is 3. Complete exhaust system must remain
under car and exit to rear behind driver.
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, 400 G.M. 3,200 lbs.
NO TOLERANCE.
TRACK SCALES WILL BE USED TO DETERMINE WEIGHT!