SUPER STREET 2012
Races are open to eligible 1995-2012 models of American made
passenger car production sedans.
APPROVED COMPETITION MODELS
The following are the only approved models eligible for competition:
Buick Regal: 1995-1997
Chevrolet Monte Carlo SS: 2007
Chevrolet Impala SS: 2008-2012
Dodge Charger: 2007-2012
Chevrolet Monte Carlo: 1995-2007
Ford Thunderbird: 1995-1997
Ford Taurus: 2000-2005
Ford Fusion: 2006-2012
Mercury Cougar: 1995-1997
Dodge Intrepid: 2001-2008
Pontiac Grand Prix: 1995-2003
Toyota Camry: 2009-2012
Any other models must be submitted to Track Officials for approval.
GLASS
A. Windshield/Windshield braces
A clear polycarbonate windshield may be used in lieu of a
standard glass windshield. The windshield must be a minimum
of 1/8 thick and have a min. of three (3) metal straps or braces
1/8 inch thick by one (1) inch installed inside the windshield.
The straps must be bolted to the roof panel or roll bar at the
top and the dashboard panel at the bottom with 5/16 inch
bolts. A piece of rubber stripping must be installed between
the windshield and straps. The straps must be installed in
a manner which will not obstruct the vision of the driver.
Windshield clips three (3) inches wide by one (1) inch by 1/8
inch must be installed if not riveted or bolted in place. If used,
three (3) clips must be bolted to the roof of the truck and
extend over the edge of the windshield. Two (2) clips must be
bolted to the cowl and extend over the bottom of the windshield.
Clips must be spaced a minimum of 12 inches apart.
B. Rear Window
Only clear standard production 1/8 inch thick polycarbonate is
to be used in the rear window opening. The standard production
polycarbonate must be formed to the same shape as the
original equipment glass. The rear window must be secured
with a minimum of two (2) metal straps on the outside, not
less than 1/8 inch by one (1) inch wide, evenly spaced, and
bolted to the roof at the top and the deck support panel at
the bottom. Holes in rear glass must be acceptable to track
specifications.
C. Rear View Mirror
Only one (1) rear view mirror will be permitted and must be
mounted at the top of the windshield. A wink type three (3)
dimensional mirror will be permitted with a maximum width
of 26 inches. The rear view mirror must not extend outside of
the truck/car.
D. Side Window Glass/Window Screen.
A nylon mesh window screen must be installed in the left side
door window opening and be positioned to cover the entire
window opening. The window screen must be a rib type,
made from minimum inch, maximum one (1) inch wide nylon
material with a minimum one (1) inch square opening between
the ribs. The minimum window screen size must be 22 inches
wide by 16 inches high. All window screen mounts must be
a minimum inch diameter solid steel rod on the bottom and
a minimum one (1) inch wide by 3/16 inch thick flat steel or
a minimum inch diameter solid steel rod on the top, with
mounts welded to the roll cage. The window screen, when in
the closed position, must fit tight and be secured with a quick
release lever type latch at the top in the front only. Quarter
windows must be the same size and located in the stock
location for the make and model truck/car being used. Only
clear, flat, polycarbonate is to be used in the quarter window
openings. Only one (1) air inlet in each quarter window will be
permitted. The maximum hose size is three (3) inches. Suction
ducts will not be permitted.
E. A vent deflector panel may be installed at the bottom of the
windshield “A” post. The deflector may extend a maximum of
8 in. rearward from the lower rear edge of the “A” post and a
maximum vertical height of 6 in.
DASHBOARD
All dash panels must be acceptable to Track Officials.
FIREWALL
A. All cars must have full fire walls of magnetic sheet steel not
less than 24 gauge (0.025 inch thick).
B. The front fire wall must extend straight across from the left
side to the right side with no offset and extend from the top
of the dash panel down to the frame rails. If the floor pan is
raised on the right side, the fire wall must extend down to the
top of the frame.
C. A rear fire wall of magnetic sheet steel, a minimum of 24 gage
(0.025 inch thick), must be located between the trunk compartment
and the driver’s compartment and must be welded in place.
D. All fire walls must be sealed with no holes between the
engine and driver’s compartment, and trunk compartment
and driver’s compartment, and they must be welded and not
pop-riveted.
IDENTIFICATION AND MARKINGS
A. It is recommended that accessories used in the interest of
safety and stability be submitted for review by Track Officials.
B. Electric heating pads, blankets, or any other method will
not be permitted for warming the transmission, rear end assembly,
or tires.
C. The drivers must not compete in any Event with head or
arm extended outside of a closed body race car.
D. Unless otherwise authorized by Track Officials, race cars
will not be permitted on the track until the track has been
opened for official practice.
E. Passengers will not be permitted to ride in/on the race car
at any time.
F. Filming devices will not be allowed to extend beyond the pit
wall unless authorized by the Track Officials.
GENERAL ENGINE REQUIRMENTS
No coating on any internal engine components,
including but not limited to ceramic or Teflon.
ENGINE REQUIRMENTS, CARBURETOR RULES, AND OVERALL MINIMUM CAR WEIGHTS
A.
NASCAR
legal LMSC engines allowed.
(Must use box stock holly 350cfm carb or box stock holly 500cfm
carb,
with the only adjustments allowed being power valve change and jetting change).
MINIMUM WEIGHT:
500 cfm carb (With Driver and with a 3/4 lb. per lap allowance) 3200LBS with
1450 right side.
350 cfm carb (With Driver and with a 3/4 lb. per lap allowance) 3150LBS with
1400 right side.
B. NASCAR legal Crate Engines allowed: The Chevy 602, 603, and 604 crate engines allowed.
MINIMUM WEIGHT:
604:
(With Driver and with a 3/4 lb. per lap allowance) 3125LBS with 1375 right
side.
603:
(With Driver and with a 3/4 lb. per lap allowance) 3100LBS with 1375 right
side.
602:
(With Driver and with a 3/4 lb. per lap allowance) 3075LBS with 1350 right
side.
(Must use box stock 390cfm or 650cfm holly carb, with the only adjustments allowed being power valve change and jetting change.) A one (1) piece solid aluminum carburetor spacer, one (1) inch thick maximum may be installed between intake manifold and carburetor.
The spacer must be centered on the intake manifold and
may be open or the four (4) hole type. No taper, bevels, or
any modifications permitted.
A one (1) piece paper gasket maximum .065 inch thickness
must be installed between the carburetor and spacer. A
one (1) piece paper gasket maximum .065 thickness must be
installed between the spacer and intake manifold. The gasket
must be no larger than the top of the intake manifold.
C. Street Stock/Pure Stock engines allowed: (Must use box stock holly 350 or 500cfm carb, with the only adjustments allowed being power valve change and jetting change)
MINIMUM WEIGHT: (With Driver and with a 3/4 lb. per lap allowance)
Tube chassis with stock clip 3050 lbs with 1375 right side.
ENGINE LOCATION
V8 MOTORS
A. First (1) spark plug hole on the right side must line-up with
or no farther back than the upper ball joint (May be in front of
the ball joint.)
ENGINE GROUND CLEARANCE
All engines must maintain a height of 12 inches from ground to
center of crankshaft, with car at race height and driver in car.
ENGINE MOUNTS
All engine mounts must be acceptable to Track Officials and
meet the following minimum requirements.
A. All engine mounts must be reinforced steel or aluminum
B. All engine mounts must be securely bolted
C. Adjustable engine mounts will not be permitted.
Carburetor Gasoline Filter
Only one (1) gasoline cartridge type filter may be used between
the fuel cell and the fuel pump. A fuel filter on the pressure
side of the fuel pump may only be used at the carburetor
fuel bowl inlet. The location and size of the filter must be
acceptable to Track Officials.
CARBURETOR AIR AND AIR INTAKE
Air cleaners must be in place during practice or competition.
CARBURETOR AIR CLEANER and AIR FILTER
A. Only a round dry gauze type paper air filter element maintaining
a minimum of 12 inches and a maximum of 17 inches
in diameter will be permitted. The air filter element must
maintain a minimum of 1-1/2 inches and a maximum of four (4)
inches in height. All air shall be filtered through the element.
The air filter elements may not be sprayed or soaked with any
type of chemicals or liquids.
B. Only a round metal air filter housing is permitted. The top
and bottom of the air filter housing must be solid and must be
the same diameter. No lips or expanded edges are permitted.
The air filter housing must be the same diameter as the
filter element. The air filter housing must be centered and sit
level on the carburetor. The bottom of the air filter housing
must be lower than the top of the carburetor choke horn. No
tubes, funnels, or any device which may control the flow of air
is permitted inside of the air cleaner or between the air filter
housing and the carburetor.
C. Cars with HEI ignition may use an offset air cleaner for
clearance purposes only.
AIR INTAKE
Cowl air induction is not permitted. Absolutely no ducts or
baffles permitted on or leading to the air cleaner or element.
No fresh air openings of any type are permitted in the hood
or cowl area.
ENGINE/CAR ELECTRICAL SYSTEM/ IGNITION SYSTEM
A. Electronic distributors are permitted. All electronic distributors
must be stock type housing, equipped with a magnetic
pickup, gear driven, and mounted in the stock location.
B. Single or dual point camshaft driven distributors are permitted.
C. Only one (1) ignition coil is permitted and it must be
mounted on the engine side of the firewall.
D. Electronic firing module amplifier box is permitted.
E. No computerized, multi-coil, dual electronic firing module
amplifier box, or crank trigger systems permitted. No magnetos
permitted. All ignition systems are subject to approval by
Track Officials.
F. No adjustable timing controls permitted
G. No external RPM limiters will be permitted.
H. No accessories to regulate the Power supply will be permitted.
I. Spark Plugs
Any make or brand of spark plugs may be used.
J. Alternator
The alternator system, when used, must be working within
specifications and mounted on the front of the engine in the
standard location.
K. Starter
The self-starter must be in working order and in stock location.
All cars must start under their own power. After race
is under way cars may be started by hand pushing in pit area
only; but under no circumstances, is any car to be pushed
onto race track from pit area.
L. Battery
The battery must be installed in an enclosed battery box,
complete with a cover, located behind the front
spindle in front of the firewall or in front of the rear axle
housing behind the driver’s seat. The battery box must be
mounted inside the outside edge of the frame rails and cannot
extend below the bottom of the frame rail. The battery
mounting position must be acceptable to Track Officials.
Any battery that would be installed during the race must be
installed in the battery box.
M. Electrical Switch Locations
All electrical switches must be located within reach of the
driver except the labeled ON/OFF switch, which must be
located on the front of dash panel in the center. The ON/OFF
switch must be wired to the battery cable in a manner that
would cut off all electrical power to the car.
ENGINE COOLING SYSTEM
Engine cooling system must be acceptable to Track Officials.
No icing, freon type chemicals, or refrigerants may be used in
or near the engine compartment. No additional water lines
may be added to or from the water pump or intake manifold
to the cylinder heads or block. Portable cooling machines or
devices will not be permitted.
WATER PUMP
A. Only aluminum or cast steel mechanical water pumps in
the stock location, turning in the same direction of crankshaft
rotation, will be permitted.
B. Water pump impellers may be altered.
C. Coolant flow must be in the same direction as the approved
production engine.
D. Only standard production V-type or flat type V-ribbed belts
and pulleys will be permitted.
FAN
A. Engine-driven fans, if used, must be operational and belt
driven from the crankshaft. Free spin or clutch type fans will
not be permitted.
B. Electric engine cooling fans are optional. When an electric
fan is used, it must be mounted parallel to the radiator.
C. If an engine-driven fan is used, it must be a standard magnetic
steel fan with a minimum of four (4) blades. Removal of
the fan blades or fan belt will not be permitted.
1. The minimum diameter of the fan must not be less than 14
inches.
2. The fan blades must be a minimum of 3-1/2 inches wide. Flat
fan blades will not be permitted.
D. The installation and location of the fan must be acceptable
to Track Officials.
FAN SHROUD AND DUCTS
When an electric fan is used, shrouds or panels rearward of
the radiator will not be permitted. When a standard steel fan
is used, the shroud must follow the entire circumference of
the fan and must not extend more than one (1) inch rearward
of the trailing edge of the fan blade. Flat panels or air dividers
will not be permitted. Fan shrouds and ducts must not be
used for down force purposes and must be acceptable to track
officials.
RADIATOR
A. The radiator must remain stock appearing and remain in the
standard position not to exceed two (2) inches from vertical.
B. Radiator dust or shaker screens will be permitted.
C. Radiator installation must be acceptable to Track Officials.
D. The radiator overflow tube may be located at the rear cowl
area ahead of the windshield directed rearward or may be
relocated to the rear of the car.
E. A panel the width of the radiator must be attached from
the front of the bumper cover to the trailing edge of the radiator.
All air that enters the grille area must flow through the
radiator core.
F. All radiator cooling tubes must be operational. All cooling
fins must be evenly spaced top to bottom and side to side and
must remain at a 90 degree angle to the side tanks. The spacing
and width must be acceptable to Track Officials.
ENGINE LUBRICATION
OIL
Any oil is permissible. Combustion enhancing additives will
not be permitted.
OIL PRESSURE
Oil pressure may be regulated at the discretion of the owner
or driver.
OIL FILTERS
Oil filters and breather caps acceptable to Track Officials will
be permitted.
OILING SYSTEM
A. Dry sump or air over oil systems will not be permitted.
During the running of the race, oil must be added from the engine
compartment. External oil pumps will not be permitted.
B. Oil drain lines will not be permitted.
C. Inside valve cover oiling systems will not be permitted.
D. Quick disconnect fittings will not be permitted.
ENGINE EXHAUST SYSTEM
The exhaust systems and components must be acceptable to
Track Officials and meet the following minimum requirements.
EXHAUST MANIFOLD
A. Exhaust headers will be permitted. The exhaust headers
must be manufactured using a magnetic steel primary tube size
of 1-5/8 inches outside diameter, maximum 30 inches in length
cut off square, no cones or pyramids will be permitted, with
a collector tube size of three (3) inches outside diameter. The
header collector pipe must not be reduced at any point between
the primary tubes and the exhaust pipe. Primary tubes
must exit down and turn to the rear into the collector pipe.
Those tubes that do not must be mounted parallel, or angle
down, in reference to the cylinder head, then turn down and
turn to the rear into the collector pipe. The maximum thickness
permitted on the header mounting flange will be 3/8 inch.
B. Stainless steel, stepped, 180 degree, merge, or crossover
equalizer tube systems will not be permitted.
C. Spacers will not be permitted between the cylinder head
and the exhaust manifold. Only one (1) gasket, maximum
0.075 inch thickness, may be used between the cylinder head
and exhaust manifold and/or header.
D. Thermal wrap will not be permitted.
E. Scavenge lines and/or hoses will not be permitted between
the engine and exhaust system.
F. Internal coatings will not be permitted.
EXHAUST PIPES
A. Exhaust pipes from the exhaust header collector must
not be larger than four (4) inches or smaller than three (3)
inches outside diameter but must be the same diameter for
the entire length. Only round exhaust pipes will be permitted,
but may be flattened to an oval shape a minimum of 1-1/2
inches high. The circumference must be the same as the round
exhaust pipe of the same diameter. Any device to reduce the
interior diameter of the exhaust pipe will not be permitted.
The exhaust pipe may exit the collector pipe and turn either
right or left and may join into one (1) pipe that must exit the
car either beneath or on top of the frame rail. When the two
(2) exhaust pipes into one (1) system is used, all exhaust pipes
must be routed beneath the transmission and exit to the outside
of the car, with a single pipe only, behind the driver and in
front of the rear wheels. Any exhaust pipe exiting through the
inside of the car must be completely sealed and not extend
more than 1/2 inch outside the door. Frames, rocker and
quarter panels must not be notched to accommodate exhaust
pipes.
B. Exhaust pipes must be made of magnetic steel, fastened to
the header collector and to the frame in a secure manner acceptable
to Track Officials.
C. Thermal wrap will not be permitted on the exhaust collector
or exhaust pipes.
D. Crossover pipes or merge systems will not be permitted.
HEAT SHIELDS
Heat shields will not be permitted.
DRIVE TRAIN
The drive train systems and components must be acceptable to
Track Officials and meet the following minimum requirements.
CLUTCH ASSEMBLY
The clutch and clutch assembly must be acceptable to Track
Officials and meet the following requirements:
A. Multiple disc clutches are permitted. The disc clutch housing
assembly or cover may be made from aluminum or steel.
B. Limited to steel discs and pressure plates.
C. The minimum clutch disc diameter permitted is 5 1/2
inches.
FLYWHEEL
The flywheel must be acceptable to Track Officials and meet
the following requirements:
A. Only a magnetic steel flywheel, bolted to crankshaft, will be
permitted.
B. The minimum starter ring gear outside diameter permitted
will be 12-7/8 inches for GM.
BELL HOUSING
A. Only special production all-magnetic steel bell housings will
be permitted.
B. Bell housings must be the same design as an OEM-type
production bell housing.
C. Holes and/or other modifications that, in the judgment
of Track Officials, have been made with the intent of weight
reduction, will not be permitted.
TRANSMISSION
A. Only standard production OEM type or Muncie or T-10
manual four (4) speed transmissions will be permitted. Standard
production OEM manual three (3) speed transmissions
will be permitted. Special production transmissions will not be
permitted. Top loader type transmission will not be permitted.
B. Only cast iron, aluminum, or magnesium transmission housing
will be permitted.
C. Holes and/or other modifications to the transmission case
or internal components that, in the judgment of Track Officials,
have been made with the intent of weight reduction will
not be permitted.
D. Only OEM type, steel, angle cut forward gears manufactured
for the transmission being used will be permitted.
Square cut forward gears will not be permitted.
E. Holes and/or other modifications to the transmission gears,
including but not limited to, narrowing of gears, that in the
judgment of Track Officials, have been made with the intent of
weight reduction will not be permitted.
F. All forward gears and reverse gear must be in working
order, and they must be operational from inside the driver’s
compartment.
G. All transmissions must have the input shaft and its main
drive gear constantly engaged. This assembly must be constantly
engaged with the countershaft and its cluster and
reverse gears.
H. Five (5) speed transmission with gears removed will not be
permitted.
I. Quick change transmissions will not be permitted.
J. Automatic or semi-automatic transmissions will not be
permitted.
K. Only Fire resistant type shifter boots, secured with fasteners,
acceptable to Track Officials will be permitted.
L. External oil pumps and oil coolers will not be permitted.
M. Heating pads and/or blankets will not be permitted for
warming the transmission.
DRIVE SHAFT
A. The drive shaft, universal joints, and yokes must be magnetic
steel and be similar in design to the standard production
type. The drive shaft must be made of one (1) piece magnetic
steel and must be either 2-3/4 inches or 3 inches in diameter.
B. Two (2) 360 degree solid magnetic steel brackets, with no
holes or slots, not less than two (2) inches wide and 1/4 inch
thick, must be placed around the drive shaft. The front bracket
must be welded to the rear suspension cross member and
the rear bracket must be welded or bolted, with a minimum of
two (2) minimum 3/8 inch diameter bolts on each side, to the
horizontal tunnel bar (#6).
C. All drive shafts must be painted white.
REAR AXLE
The rear axle must be acceptable to Track Officials and meet
the following requirements:
A. The center of the rear end housing must be within 1/2 inch
of the center line of the tread width, front and rear.
B. Only the following differentials will be permitted:
1. Only Detroit locker ratchet type differentials will be
permitted . When this type differential is used, one (1) wheel,
when jacked up, must turn freely by hand for one (1) full turn-
360 degrees.
2. Locker units must contain the following:
1 central drive unit
2 clutch halves
2 springs
2 axle gears
3. Locked rear drive axle assemblies (solid spool) will be
permitted. When jacked up, both rear wheels must rotate
in the same direction and the same rotational distance at all
times. One (1) wheel, when jacked up, must not rotate in any
direction.
C. Only quick change rear end center sections with a minimum
cross section height of 12 inches at the center of the
rear axle with a side bell minimum diameter of 12 inches and
magnetic steel spur gears on the back side will be permitted.
Only a magnetic steel lower jackshaft and driveshaft yoke will
be permitted in the quick change rear end center section.
D. Full floating rear axle must be used, but must not alter the
tread width or general appearance.
E. Only solid, one-piece magnetic steel axle housings will
be permitted. Only one-piece, magnetic steel axles will be
permitted.
F. Cambered rear axle housings will not be permitted. The
method used to check camber will be the Track Officials’
option.
G. Only metal drive plates, the same thickness on the left and
right side, will be permitted and the drive plates must be one
(1) piece with a single internal spline. Grease fittings will not
be permitted on the drive plates or axle caps.
H. If rear axle housing support bars are used, they must not
have any method of adjustment.
I. External oil pumps and oil coolers will not be permitted.
J. Heating pads and/or blankets will not be permitted for
warming the rear end assembly.
K. No lightening of ring and pinion gears.
L. No lightweight locker units.
M. No titanium parts allowed at all.
N. 9” Ford rear end permitted.
WHEELS
A. 8" wheels
B. All wheels must be the same width off offset (backspacing)
C. Only solid, one-piece, heavy-duty 5/8 inch magnetic steel
lug bolts and standard one (1) inch hex by minimum 5/8 inch
thick, fully threaded, solid, one-piece magnetic steel lug nuts
will be permitted. The first thread on each lug bolt must
be visible from the front of the lug nut when the lug nut is
installed.
D. Bleeder valves will not be permitted.
E. Tape or heat shielding material will not be permitted on the
wheels.
F. Car numbers must be painted on wheels.
TIRES
FREE Track Tires
FRAMES
All frames must be acceptable to Track Officials. Any frame
rejected by the Track Officials will not be approved until necessary
corrections have been made. No holes may be cut in
frame rails to lighten. The frame used must meet the requirements
described in the following paragraph.
GENERAL FRAME ELIGIBILITY
A. All frame components must be made of magnetic steel and
welded. The frame must consist of a front and rear sub-frame
connected to the main frame on which the roll cage is welded.
Sub-frames must not be offset from the main frame centerline.
Holes drilled in frames, frame supports, and cross members
that, in the judgment of Track Officials, were made with the
primary intent of weight reduction, will not be permitted.
B. 1960 or older General Motors front frame sections will not
be permitted.
FRAME REQUIRMENTS
A. A tubular welded magnetic steel frame must be used except
that the stock front sub-frame, beginning a minimum of 22
inches rearward of the centerline of the front spindles and extending
forward to in front of the radiator, must be a product
of the automobile manufacturers. Front sub-frames may be
interchanged from one manufacturer to another (such as Ford
to General Motors). The sub-frame must remain stock. The
only modifications permitted are for spring buckets and the
bottom of the cross member may be cut for oil pan clearance.
The cross member must not be moved from its original
location. Offset frames will not be permitted. The main frame
side rails must be parallel and be an equal distance from the
centerline of the frame. The main frame side rails must be the
same size (height and width), constructed using a single tube,
and inserted in standard rocker panels and must be magnetic
steel box tubing a minimum two (2) inches in width by three
(3) inches in height and a maximum three (3) inches by four
(4) inches, and must have a minimum wall thickness of not less
than 1/8 inch meeting the ASTM A-500 specifications. Frames
must not be notched to accommodate the exhaust pipes.
Rocker panels must remain in the standard location. The rear
sub-frame rails must be configured and attached in the same
location on the left side and the right side, be parallel and be
an equal distance from the centerline of the rear sub-frame.
The rear sub-frame rails must angle in at 90 degrees, then
turn back at 90 degrees (kick-in) from the frame side rails and
must angle upward and rearward from the kick- in extending
across the rear axle housing, angle down and turn to the rear
of the car and must be a minimum two (2) inches in width
by three (3) inches in height with a minimum wall thickness
of not less than 0.083 inch meeting the ASTM A-500 specifications
and must be similar in design and configuration to
standard automobile rear kick-ups. The rear sub-frame rails
must be parallel. The rear sub-frame must incorporate the
mounting locations for the rear springs, shocks, pan hard bar,
and fuel cell ending with a cross member a minimum of one (1)
inch in width by three (3) inches in height with a minimum wall
thickness of not less than 0.083 inch meeting the ASTM A-500
specifications (refer to the Construction Guidelines in the
rear pages of the Rule Book). A reinforcement bar, minimum
1-1/2 inches in diameter and 0.083 inch wall thickness, must
extend below the rear frame section behind the fuel cell. This
reinforcement bar must be as wide as the rear frame rails
and extend as low as the bottom of the fuel cell with two (2)
vertical uprights evenly spaced between the frame rails and
attached to the rear cross member. Two (2) support bars, one
(1) located on each corner, must angle upwards and be welded
to the rear frame rails.
B. The distance from the outside edge of the main frame side
rails, left and right, must be the same, measured from the
centerline of the tread width, front and rear. When measured
from the outside edge of the left side frame rail to the outside
edge of the right side frame rail, a minimum width of 57 inches
and a maximum width of 64 inches must be maintained on all
frames. Weight containers must not be added on the outside
of the frame rails. Weight containers, if used, must only be
attached to the inside of the main frame rails.
C. An optional tubular front sub-frame may be used on any
model car, but must be constructed by the following guideline:
(1) A GM-type front steer tubular front sub-frame must
be constructed using two (2) inch wide by four (4) inch high
magnetic steel tubing with a minimum 0.083 inch wall thickness
meeting the ASTM A-500 specifications. All front steer
assemblies must maintain a dimension of 32 inches from the
center of the left side frame rail to the center of the right
side frame rail at any point from the frame side rail kick outs
extending forward in front of the steering assembly. The front
frame extensions using two (2) inch wide by three (3) inch
high by minimum 0.083 inch wall thickness magnetic steel
tubing meeting the ASTM A-500 specifications may be welded
to the end of the sub-frame but should angle down a maximum
of 18 degrees. The front sub-frame must be attached in
the center of the frame at the frame side rail kick outs and
extend forward a length of 16 inches on one (1) side with the
opposite side no more than one (1) inch difference and angle
upward at between 22 and 25 degrees. At this point, a piece
of tubing 27 inches long must be welded and extend straight
forward in front of the steering assembly.A distance of 25
inches must be maintained from the leading edge of the kick
out to the centerline of the front cross member. The subframe
cross member must be mounted at the centerline of the
front sub-frame at a 90 degree angle and must be constructed
using two (2) inch high by three (3) inch wide magnetic steel
tubing with a minimum 0.083 inch wall thickness meeting the
ASTM A-500 specifications. It is permissible to install a cross
member center section using three (3) pieces of one (1) inch
by one (1) inch by 0.120 inch thickness magnetic steel tubing
welded together with a 3/8 inch magnetic steel plate welded
to each end. A 3/8 inch steel plate must be welded to each
end of the cross member. A minimum of four (4) 3/8 inch
diameter bolt holes (two (2) on each end) must be drilled for
attaching the cross member together. This will permit easy
removal of the engine oil pan. A cross member center section
made of 1/2 inch thick by three (3) inches wide magnetic
steel plate welded to the left and right of the front cross
member, and supported by 1/4 inch thick by two (2) inches
wide magnetic steel plate, may be installed as an alternative
to the center section described above. The mounting points
for the lower A-frames must be 14-1/4 inches at the rear and
8-3/4 inches on the front, measured from the centerline of
the sub-frame to the centerline of the mounting hole. When
measuring either the right or left side, the distance from the
centerline of the bottom ball joint to the centerline of the
sub-frame must be equal.
D. A minimum ground clearance of four (4) inches must be
maintained on any part of the frame or body.
SUSPENSION
All suspension systems, components and parts must be acceptable
to Track Officials and meet the following minimum
requirements:
A. All suspension components must be reinforced. Non-ferrous
suspension parts will not be permitted.
B. Rear Suspension Trailing Arms Only a conventional two
(2) link truck trailing arm type or a three (3) link passenger
car type suspension will be permitted. (1) Truck trailing arms
must be attached to the rear axle housing, with one (1) solid
‘U’ bolt on each side over the axle housing and through the
truck trailing arm, with nuts securing the truck trailing arm
to the axle housing and to the chassis in the front with a steel
or rubber bushing or mono balls, (must be the same on both
sides), at the end of each truck trailing arm attached with
minimum 3/4 inch diameter bolts. Truck trailing arms using
heim joints (spherical rod ends) will not be permitted. The
front truck trailing arm mounting brackets must be one-piece,
welded magnetic steel. Hydraulic or spring loaded mounting
points or links will not be permitted. Mounting points on the
axle housing must be evenly spaced and welded to prevent
movement and must be equal distance from the centerline of
the rear frame rails. Truck trailing arms when measured from
the center of the front mounting bushing to the center of the
rear axle tube, in a straight line, must maintain an equal length
on the left side and the right side with a minimum length of
45 inches. Pickup truck OEM trailing arms may be cut down
to a minimum two (2) inches wide by three (3) inches high.
I-Beam style truck trailing arms must be used. They must be
constructed using two (2) C-channels of a minimum of one
(1) inch in width by three (3) inches in height magnetic steel
with a minimum wall thickness of 1/8 inch meeting the ASTM
A-500 specifications, welded back to back, creating a vertical
wall of two (2) 1/8 inch wall thickness with a completed overall
size of two (2) inches in width by three (3) inches in height.
Box tube truck trailing arms will be permitted. Adjustable
truck trailing arms will not be permitted. Any spacers used
between the rear axle housing and the truck trailing arms
must be made of a solid metal block. All truck trailing arms
and mounting brackets must be acceptable to Track Officials.
Holes and/or other modifications to the truck trailing arms
and mounting brackets that, in the judgment of Track Officials,
have been made with the intent of weight reduction will not
be permitted. (2) Passenger car type trailing arms must be a
maximum of 25 inches in length at the center of the mounting
holes. The trailing arms must be fabricated using a minimum
1-1/4 inch by two (2) inches steel box tubing with a minimum
wall thickness of 1/8 inch meeting the ASTM A-500 specifications.
Both trailing arms must be the same length and be
made in one (1) piece. Both trailing arms must be parallel with
each other when attached to the frame and rear axle housing.
Mounting points on the axle housing must be evenly spaced
and welded to prevent movement and must be equal distance
from the centerline of the rear frame rails. Standard type rubber
or metal bushings must be used. Adjustable rear trailing
arms will not be permitted. All trailing arms and mounting
brackets must be acceptable to Track Officials. Holes and/or
other modifications to the passenger type trailing arms that,
in the judgment of Track Officials, have been made with the
intent of weight reduction, will not be permitted. Hydraulic or
spring loaded mounting points or links will not be permitted.
C. The rear axle housing must be held in the center of the car
side to side by a single straight tubular pan hard bar behind
the rear axle connected to the frame on the right side and the
rear axle housing on the left side.
COIL SPRINGS
All downward front chassis movement while the race car is
in competition must be limited only by the normal increasing
rate of the front springs or the bottoming of the chassis
against the race track, whichever occurs first. Any device or
procedure that, in the judgment of Track Officials, attempts to
detract from or compromise the above will not be permitted.
Only coil spring suspension will be permitted. All coil
springs must be constructed using round magnetic steel wire.
Ovate and flat wire will not be permitted. The coil spring wire
diameter must be the same size from the top to the bottom
of the springs. All of the coils in a spring must be active. The
coil springs in all four (4) wheels must be active in any and all
suspension movement.
A. COIL OVER SPRINGS
1. Front coil over springs must mount to the stock appearing
lower A-frames.
2. Strut bars will not be permitted for mounting of the coil
overs.
3.Rear coil overs must be mounted on the outside of the rear
frame rails. Both springs must be mounted to brackets on the
rear axle housing in the same location on the left and on the
right side.
4. Only one (1) spring per wheel will be permitted.
5. Coil over springs must be heavy-duty magnetic steel and
must be constructed with both coil ends closed and ground.
Refer to 2012 NASCAR LMSC Rule Book for minimum and
maximum diameters.
6. Progressive or digressive rate springs will not be permitted.
7. One (1) spring rubber insert, not to exceed one (1) full coil,
acceptable to Track Officials will be permitted.
B. FRONT COIL SPRINGS
1. The front coil springs must be heavy-duty magnetic steel
and must be constructed with one (1) closed, ground coil end
and one (1) open coil end.
2. The front coil spring mounts must be located on the stock
appearing lower A-frame for the bottom mount and the top
mount must be welded to the chassis frame rails.
3. It is permissible to install heavy-duty bolts (jacking bolts)
for the purpose of raising or lowering the car.
4. Jacking bolts will not be permitted to extend through the
frame rail tube.
5. One (1) spring rubber insert, not to exceed one (1) full coil,
acceptable to Track Officials will be permitted.
6. All coil springs must maintain a minimum outside diameter
of 5-1/4 inches and a maximum outside diameter of 5-3/4
inches.
7. Only one (1) spring per wheel will be permitted.
8. Progressive or digressive rate springs will not permitted.
C. REAR COIL SPRINGS
1. The rear coil springs must be heavy-duty magnetic steel and
must be constructed with both coil ends closed and ground.
2. Coil springs mounted on the truck trailing arms must not
be located outside the rear frame rail kick-ups, and must be
equal distance from the centerline of the rear frame rails.
3. All upper and lower rear coil spring mounts must be
located between the rear frame side rails. Jacking bolts will be
permitted to be located through the frame rails. The center
of the jacking bolt must not extend further than the center
of the frame rail from the inside edge. Jacking bolts located
through the frame rails must have a solid sleeve extending
through the frame from top to bottom and be welded completely
into the frame rails.
4. The rear coil spring lower mounts must be located in front
of the rear axle housing.
5. The rear coil spring upper mounts must be located and
welded on the chassis directly above the lower mounts.
6. One (1) spring rubber insert, not to exceed one (1) full coil,
acceptable to Track Officials will be permitted.
7. All coil springs must maintain a minimum outside diameter
of 4-3/4, inches and a maximum outside diameter of 5-1/4
inches.
8. Only one (1) spring per wheel will be permitted.
9. Progressive or digressive rate springs will not be permitted.
SHOCK ABSORBERS
NO REBUILDABLE SHOCKS ALLOWED.
The only brands allowed are: AFCO 10 & 13 Series, Carrera 31, 61 & 67 Series, QA1 55 & 67 Series, Pro AC Series.
The shocks will be controlled by a $700.00 claimer rule. Any
top five finisher in the race may claim any of the other top five
finishers shocks from that event. The claim must be made in
writing within 20 minutes after the event accompanied by the
$700.00 cash. Anyone not allowing their shocks to be claimed
will be suspended a minimum two racing events and fined a
minimum of $500.00.
SWAY BARS
Sway bars must be acceptable to Track Officials and meet the
following requirements:
A. Front sway bars and arms must meet the guidelines in the
2012 NASCAR Rulebook.
B. Sway bars (anti-roll bars) will not be permitted on the rear
suspension.
A-FRAMES
A. A-frames must have a stock appearance and be made of
magnetic steel. Holes and/or other modifications that, in the
judgment of Track Officials, have been made with the intent of
weight reduction, will not be permitted.
B. Upper and lower A-frames may be altered for tire clearance.
Heim joints (spherical rod ends) will not be permitted
on upper and lower A-frames.
C. Lower A-frames must have a stock appearance for the type
front sub-frame being used and mounted in the stock location.
Both A-frames must be the same length (no offsets permitted).
If fabricated, the General Motors type lower A-frames must
be constructed using a minimum one (1) inch wide by two (2)
inches high magnetic steel tubing. If fabricated, the Ford type
lower A-frames must be constructed using a minimum two (2)
inches wide by one (1) inch high magnetic steel tubing.
D. The distance from the centerline of the tread width, front
and rear, to the mounting points of the lower A-frames, left
and right, must be the same.
E. Only one (1) non-adjustable lower A-frame mounting hole
per side in the chassis or A-frame will be permitted. Slots or
adjustments will not be permitted.
F. Offset bushings will not be permitted in the chassis or
lower A-frame.
G. Ball joints must be stock appearing, heavy-duty magnetic
steel construction and must be acceptable to Track Officials.
The ball joints must not have any adjustment with the exception
of a free play adjustment in the housing for the ball and
socket.
SPINDLES, WHEEL BEARINGS AND HUBS
A. One-piece, non-adjustable, heavy-duty magnetic steel
spindles and heavy-duty wheel bearings will be mandatory.
Holes and/or other modifications that, in the judgment of
Track Officials, are made or used with the intent of weight
reduction will not be permitted.
B. Offset spindles will not be permitted.
C. Solid wide five (5) pattern hubs will be permitted.
D. Front and rear hubs must have the same dimensions on the
left and right side—offset hubs will not be permitted.
TREAD WIDTH REQUIREMENTS
A. Magnetic steel spacers will be permitted to utilize the max.
allowable tread width. Spacers, if used, must be the same
thickness left and right; however, the front and rear do not
have to agree.
B. Cars must not exceed the max. allowable tread width of
64-1/2 inches, front and rear, measured at the center of the
tire, zero toe in, at spindle height. A tolerance of 1/2 inch will
be permitted between the front tread width and rear tread
width, but the tread width must not exceed 64-1/2 inches.
WHEELBASE REQUIREMENTS
All cars must compete with a wheelbase of 105 inches minimum
plus or minus 1/2 inch on the left side or the right side.
BODY HEIGHT REQUIREMENTS
A. Cars must maintain a min. roof height of no less than 48
inches. The car height off the ground and body height, including
rake or degrees of body angle, shall be determined by measuring
the overall height of the car at a distance of 10 inches
behind the top of the windshield on the roof center line.
B. Competitors presenting car for inspection of the min. body
height and the min. ground clearance must have their tires
inflated to the air pressure recommended by the participating
tire manufacturer for the Event. This will apply to pre-race
and post-race inspection.
C. For more detailed body height dimensions, refer to the rear
pages of the Rule Book under Construction Guidelines.
GROUND CLEARANCE REQUIREMENTS
A. The frame rail and sheet metal clearance must be a min. of
four (4) inches.
B. The front air dam clearance must be a min. of four (4)
inches.
C. The engine ground clearance from the center of the
crankshaft at the water pump belt pulley must be a min. of 12
inches.
CAR HEIGHT ADJUSTMENT DEVICES
A. Mechanical or electrical devices for adjusting the car’s
height will not be permitted inside of the driver’s compartment.
B. Hydraulic or electronic weight shifting devices will not be
permitted at any time.
C. Electrical, pneumatic, hydraulic, remote control, or any other
devices that change the handling characteristics or height of
the car, will not be permitted.
D. Car height adjustments will not be permitted on the left
front suspension during a race unless approved by Track Officials.
STEERING COMPONENTS
A. All cars must be equipped with a magnetic steel steering
shaft.
B. All steering boxes must be mounted in the stock location
and the stock position at an angle of not less than 10 degrees
on GM type front sub-frames. Any means of raising or changing
the steering box position will not be permitted.
C. Tie rods, drag links, pitman arms, idler arms, and component
part s must be heavy-duty magnetic steel. Holes in
steering components that, in the judgment of Track Officials,
have been made with the primary intent of weight reduction,
will not be permitted. Heim joints (spherical rod ends) will
be permitted on steering linkage, but must have flat washer
larger than the ball.
D. The center-top of the steering post must be padded with at
least two (2) inches of resilient material.
E. A quick-release metal coupling with a metal housing acceptable
to Track Officials on the steering wheel is mandatory.
The use of two (2) universal joints, a min. of 12 inches apart,
in front of the firewall and a collapsible steering section in
the steering shaft is recommended and must be acceptable to
Track Officials.
F. Rack and pinion steering will not be permitted.
G. Only magnetic steel spoke steering wheels will be permitted.
H. The power steering pump must be mounted and driven off
the front of the engine.
I. All steering boxes must be constructed of magnetic cast steel.
BRAKES AND BRAKE COOLING
The car braking, brake cooling systems and components must
be acceptable to Track Officials and meet the following minimum
requirements. Holes and/or other modifications that,
in the judgment of Track Officials, are made or used with the
intent of weight reduction will not be permitted.
BRAKE COMPONENTS
A. Only single piston disc brakes with stock type calipers will
be permitted front and rear. Brakes must be installed on all
four (4) wheels. Floating brake calipers will not be permitted.
B. Only magnetic cast iron or magnetic cast steel round brake
rotors will be permitted. Rotors must maintain a minimum of
3/4 inch thickness and must not be drilled, slotted or grooved.
The brake rotors must be bolted to the hubs. Floating brake
rotors will not be permitted.
C. Master cylinder(s) and reservoir(s) must be mounted on the
engine side of the front fire wall.
D. Brake proportioning system adjustments inside the driver’s
compartment will be permitted. The balance bar for proportioning
the brake master cylinders will be permitted at the
brake pedal mounting point inside the car.
E. Electronic wheel speed sensors or brake actuators will not
be permitted.
F. Power assisted braking systems will not be permitted.
G. Brake fluid recirculatory systems will not be permitted.
H. Quick disconnect fittings on the brake lines will not be permitted.
I. Only one (1) brake caliper per wheel using only two (2)
brake pads per caliper will be permitted.
BRAKE COOLING
A. All brake cooling parts, components, and installation must
be acceptable to Track Officials.
B. One fan or blower will be permitted to be used in the
brake cooling hose per wheel. Mounting of brake cooling components
must be acceptable to Track Officials.
C. A maximum of two (2) scoops per brake, with a maximum
three (3) inch flexible hose to the brake, may be used for
brake cooling.
D. The maximum size for the air scoops is six (6) inches by
eight (8) inches, and when installed they must not extend
forward of the leading edge of the air dam.
E. Openings above the uppermost horizontal surface of the
front bumper including the headlight openings must not be
used to pick up air for brake cooling. Fans or blowers will not
be permitted.
F. Liquid or gas cooling of the brakes will not be permitted.
FUEL
Franklin County Moonshine 120 proof
FUEL SYSTEM
Pressure systems will not be permitted. Any concealed pressure
type containers, feed lines or actuating mechanisms
will not be permitted, even if inoperable. Icing, freon type
chemicals or refrigerants must be not be used in or near the
fuel system.
FUEL PUMP
The fuel pump must be acceptable to Track Officials and meet
the following minimum requirements:
A. Electric fuel pumps will not be permitted.
B. Cooling of the fuel pump will not be permitted.
C. Only mechanical, lever-action, camshaft actuated fuel
pumps in the stock location will be permitted.
D. A magnetic steel plate is required between the engine block
and the fuel pump on General Motors engines. Thermal plates
or gaskets will not be permitted.
FUEL CELL
The use of a commercially manufactured fuel cell acceptable
to Track Officials must be used.
A. The maximum fuel cell capacity including the filler spout
and overflow must be 22 gallons. The nominal fuel cell size
must be 32 5/8 inches by 16 5/8 inches by 8 7/8 inches unless
otherwise stated in individual division rules.
B. Materials other than standard foam, as provided by an approved
fuel cell manufacturer, will not be permitted.
C. Fuel cell check valve is required and must be acceptable to
Track Officials. All approved fuel cells may be equipped with
a steel ball fuel filler and fuel vent check va l ve assembly that
meets the following minimum requirements:
1. The fuel cell check valve housing must be manufactured of
aluminum or magnetic steel plate not less than 1/4 inch thick.
The bottom surface of the check valve plate must be flat.
Spacers will not be permitted between the check valve plate
and the fuel cell bladder.
2. The solid steel ball check valve must be encased in a four (4)
rail carriage. The rails must be constructed of solid aluminum
or magnetic steel not less than 1/4 inch thick by not less than
3/4 inch wide material. The carriage rails must be positioned
such that the surface of the 1/4 inch thick edge rides against
the steel check ball. Outside surfaces of the carriage must not
have any sharp edges. The carriage must not be altered in any
way and must remain perpendicular to the fuel cell check valve
top flange plate.
3. The fuel filler check valve carriage must not exceed a maximum
depth of 8-1/2 inches. The maximum inside diameter of
the filler neck including the check ball seat must not exceed
2-1/8 inches. When seated at least 112 of the check ball must
be visible. The diameter of the solid steel check ball must be
2-3/8 inches.
4. The fuel vent check valve carriage must not exceed a maximum
depth of 8-1/2 inches. The maximum inside diameter
of the vent pipe neck including the check ball seat must not
exceed 1-1 /4 inches. The diameter of the solid steel check
ball must be 1-3/8 inches.
5. The fuel inlet tube and vent tube must have a bead around
its circumference for hose retention.
FUEL CELL CONTAINER
A fuel cell container must be used and must be acceptable to
Track Officials and meet the following minimum requirements:
A. The fuel cell must be encased in a container of not less than
22 gage (0.031 inch thick) magnetic sheet steel. Fuel cells must
be fitted within the container so that the maximum capacity,
including filler spout, will not exceed 22 gallons.
B. The 22 gallon capacity fuel cell container size must be 33
inches by 17 inches by 9-1/4 inches (outside dimensions) unless
otherwise stated in individual division rules.
ROLL CAGE
Basic NASCAR roll cage structure