Super Stock Division
Super Stock Division
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Eligible Models
a. 1950 or newer American made.
1. Minimum wheelbase 108"
A. Ford: 105"
2. Body swaps allowed
3. Ford or Chrysler engines may be installed in a
GM metric chassis built to Mid-Am specs.
4. Unibody cars are not allowed
Chassis
Frames
a. Must be completely stock configuration from front of steering box to
behind rear spring pockets
b. No modifications, or alterations of any kind (chopping, shortening, wedging,
dropping)
1. The only exception being notching and plating for
fuel pump clearance (See Section V.K.2.a.ii)
c. Minimum frame height: 6" (except front crossmember)
1. 5" minimum height on exhaust
2. All measurements with driver in car
d. Plating of frame for strength or repair is allowed
Suspension
a. Springs
1. Stock appearing steel spring that fits in original
mounts in original location.
2. Springs may be altered (cut, heated, or bent)
3. No twist-in spring spacers allowed.
4. Hidden spring spacers allowed on top of front springs
5. Two rear weight jacks are allowed
b. Shocks
1. Aftermarket OEM shocks allowed Ð stock mount
only
2. Front shocks must be in stock location
A. spacers may be used on
bottom mount
3. Rear shocks must be OEM style rubber mount
A. Mounting positions may
be moved
4. No aluminum shocks
5. Adjustable shocks allowed
A. Adjustment may not be external
Spindles & Hubs
a. All components must be stock OEM.
b. No drop spindles.
c. Spindles stock for that make and model of chassis
d. No lightening of hubs.
e. Coleman hub recommended on right front GM metric chassis
Steering
a. Stock tie rods only
1. No heim joints
2. No aluminum tie rod sleeves
b. Cars using aftermarket steering shaft must...
1. Install a safety sleeve in the main shaft OR
2. Use a complete aftermarket collapsible racing column
3. An impact collar must be welded on the shaft before
the final mounting bearing.
Control Arms**
a. Stock control arms may be used
1. OEM correct for make and model and year
b Front upper control arm may be replaced with complete steel tubular drop
in replacement, one piece control arm of stock length, plus or minus1/2"
of stock length using stock ball joints. Stock length is 8".
c. No metal bushings
d. Upper A-arm cross shaft may be milled 1/4" maximum
1. Offset cross shaft is legal
e. Upper A-arm may be notched for shock bolt clearance
f. no DCR rear control arm bushings or pivots allowed
g. modification of top hats is prohibited
h. top hats must remain in original OEM condition
** These rules are being added as a research and development trial. Failure to comply will result in the rules from 2007 being reinstated.
Modifications
a. Rear upper control arms may be modified for pinion angle correction
b. Rear upper trailing arm holes may be raised up to 1" on the frame
Sway Bars
a. OEM Sway Bars Only
a. Must be mounted to frame in stock position in stock mounts
1. May be adjustable
2. Lollipop adjusters are not allowed
Wheel Base
a. Must match stock dimension (Maximum 1" variance between the two sides)
Roll Cage
a. 6 point roll cage is mandatory
b. No offset cages
c. No laid back cages
d. Minimum 4 drivers side door bars.
1. Drivers side door bars must be plated with minimum
1/8" plate steel
2. Door bars must have 2 uprights between each door
bar.
3. Drivers door bars should be flush with inside of
door skin.
e. Cage must have 1 bar side to side at dash level
f. Minimum 3 right side door bars.
g. Which may run straight between front and rear uprights.
h. Minimum 2 side to side bars behind drivers seat
1. 1 bar side to side at shoulder height
2. 1 bar diagonally from top to bottom
i. Each side of cage must have an upright bar at vent window area (Wing Window
Bars)
j. Top halo of roll cage must have a center bar from the front to rear of
the halo.
k. Cage must be securely welded to frame with 3" gussets
l. Mandatory bars will be 1 3/4" x 0.095 round steel tube
m. Driver foot protection bar highly recommended
n. 2 bars from top of rear hoop extending through to rear frame rails
o. Bars from firewall forward optional
p. All 90 degree connections must be gusseted
q. All roll cages, installations and welding will have to meet approval of
safety inspectors
r. While sitting in seat, mandatory 3" clearance between top of drivers
helmet and top of roll cage
s. Main hoop should be 39" high
1. Main hoop must be vertical
2. Lower cages may be issued weight penalties
t. X-brace in the center of the frame section, underneath the driver compartment,
is highly recommended (Mid-Am Style)
u. Roll cages set back further than 82 1/2" from center of lower ball
joint to back of main hoop will have weight penalty of 100 lbs. The further
back, the more weight will apply.
Bodies
Body Overview
a Must resemble a production vehicle
b. Must be all steel
1. Nose and Tail accepted
2. No fiberglass
3. No aluminum
4. Minimum thickness 24 gauge
c. Must use a stock production roof
d. No offset bodies
e. Aftermarket or neatly fabricated nose and tail may be used
(officials discretion)
f. Drivers door must be gutted for installation of door bars.
g. Driver's compartment may use stock firewall or fabricated "foot box."
1. Foot Box may not be set back any further than 4"
from stock firewall location (call the track if clarification on exact placement
is needed)
2. Minimum 18 gauge steel construction
h. Stock floor or 1/8" plate required under driver
i. Interior may be of Mid-American design
1. Must be steel; minimum 22 gauge
j. All interior upholstery and flammable material must be removed.
k. All exterior chrome, door handles, etc. must be removed
l. All glass, except windshield, must be removed
1. If using lexan or screen for windshield, must be
braced with either (3) 1" x 1/8" straps, or (3) 3/8" minimum
square or round steel tubing, evenly spaced.
2. Mesh must be 1" or smaller, 0.035 minimum
wire diameter type 304 stainless steel or equivalent
A. Drivers using screens must
use approved full face helmet
3. No tinted windows
m. Front and rear firewalls must be completely sealed with minimum 22 gauge
steel
n. No sharp edges
1. Wheel wells, if hemmed, must be hemmed inward
Hood & Trunk
a. Remove stock latches
b. Hood and deck lid pins mandatory
c. Hood must be sealed tightly at firewall or dash
d. No functional hood scoops or holes in hood
1. No cold air induction, period!
e. Spoiler may be stock or fabricated if less than 5".
Bumpers and Protection Bars
a. Stock type bumpers; steel or aluminum
1. Cars with rubber noses may use tubing bumpers
A. Tubing may be round or
squared
B. Tubing may not exceed 0.095"
thickness
C. Tubing ends must be open
for inspection
b. No reinforcing
c. Bumper brackets may be welded to frame horns
d. Bumpers must be capped to fenders to prevent hooking another car
1. No jagged edge bumpers
e. Must have front and rear towing points
1. Front hoop is acceptable
2. Chain loop or cable OK
f. Front and rear protection bars allowed
1. One bar only
2. Maximum 1 1/2" tube
3. No higher than hood or trunk
4. No wider than frame horns
g. Side rub rails allowed
1. Maximum 1" x 2" square tube
A. May not protrude more than
1"
2. Must have 45 degree capped ends
3. Must be securely mounted no further than 1"
from end of rub rail
4. Competition Committee members will closely inspect
rub rail mounting
Body Height
a. Front air dam and side rocker panels - minimum 5" ground clearance
b. Rear 1/4 panel behind rear tire must be 10" minimum ground clearance
Numbers
a. Contrasting Colors
b. Height:
1. Doors: Minimum 16" high
2. Roof: Minimum 24" high
3. Letter suffixes must be at least 50% of Number
size
c. Width: Minimum 3"
d. Clearly readable from the scoring tower from any point on the racing surface
e. Front and rear bumper numbers must be a minimum of 5" high
f. No "spray can" numbering
General Appearance
a. All cars must be neat appearing
1. Cars must be painted
2. No loose body panels
3. No dented up cars
A. Damage should be repaired
weekly
4. No profane or otherwise offensive slogans
5. Rust should be repaired
b. Cars not meeting appearance standards will not be allowed to compete.
Drivers Compartment
Kill Switch
a. must be "push-pull" or metal toggle type
b. Must be clearly labeled
c. Must be easily accessible from either side of car
d. Must be reachable by driver when strapped in
Fire Extinguisher
a. Must be fully charged
b. Must be securely mounted within reach of driver
c. Must be quick release mounting
Padding in Drivers Area
a. Center of steering wheel must be padded
b. Roll bar must be padded by drivers head
c. Inside of driver door must be padded
d. Additional padding required in areas of possible contact
Window Net
a. Net must be permanently mounted on bottom
b. Quick release mechanism must be toward front roll cage upright near roof
Seat
a. Must be properly installed
b. approved aluminum seat only
c. Must be high back design
d. Headrest must be supported
e. Rib rest must remain flexible
f. Must be mounted with minimum 3/8" hardware
g. Must use oversize washers
h. Minimum 6 mounting points
1. 4 points on seat bottom
2. 2 points on seat back
Five (5) Point Racing Harness
a. Condition of belts is up to the Officials discretion
b. 3" lap, 3" shoulder, and submarine belt required
c. Secured with minimum 3/8", grade 5 hardware
d. Lap mountings must swivel
e. Shoulder belts must be supported at shoulder level
Oil Pressure Lines
a. No plastic oil pressure lines
b. Metal only
Mirrors
a. Mirrors are allowed
Gas Pedal
a. Must be push/pull or toe clip design.
Engines
Definition
Unmodified" Definition: Sanding, grinding, porting, polishing, relieving,
acid dipping, chemical treating, abrasive blasting, re-drilling, addition
of material, flow enhancing techniques, etc. are all considered to be modifications
and therefore not legal in any further areas marked No modifications.
Sealed Engines
Sealed GM Crate Motor P/N 88958602 with Holley P/N 080541-1 650 CFM 4 barrel
is legal. See Section 7.13 for additional weight details.
Maximum Cube Displacement
a. Chevy 360
b. Ford 361
c. Mopar 366.
Vortec Head Compression Restriction
Chevys using Vortec heads are limited to 10.8:1 compression and a 2 barrel
carburetor.
Chassis and Engine Combination
a. Must be from parent company of chassis
b. No aluminum blocks
c. No aluminum heads
Cams
a. May be solid or hydraulic
b. No roller cams
c. No roller rockers
d. No stud girdles allowed
e. Vortech engines maximum valve lift .500
Intakes
a. Cast iron intakes only, except Vortec engine
b. No Modifications
c. Edelbrock 7116 Aluminum Performer Manifold is allowed on Vortec Engines
d. GM intakes 14096242 and 14096011 are illegal
Carburetor
a. No airflow modifications are allowed.
1. Choke butterfly may be removed
b. Quadrajet 4 bbl
c. 4412 Holley 2 bbl
1. Must be gauge legal
d. Rochester 2 bbl
e. Fords and Mopars will be allowed their respective factory carburetors
1. Holley 4 barrels are NOT allowed, factory or not
f. 1 1/4" maximum adapter plate including gaskets
g. No throttle cables allowed
h. Two throttle springs mandatory
Engines Continued
Cylinder Heads
a. Unmodified cast iron production cylinder heads allowed
b. OEM stock cast iron exhaust manifolds only on crate motors
c. Chevys also allowed
1. World Products SR IO52 casting
2. Vortec heads GM castings Ô062' and Ô906'
3. Maximum valve size
A. Vortec: 1.94" intake,
1.50" exhaust
B. All others: 2.02"
intake 1.60" exhaust
b. Fords also allowed
1. World Products Windsors and Windsor Juniors
2. Roush 200's
A. Max 361 C.I. with flat
top pistons and 4412 2 barrel
c. MoPars are allowed W2's
Exhaust Manifolds**
a. Oem stock cast iron exhaust manifolds only.
b. Headers part number to be determined for crate motor.
c. No Corvette exhaust manifolds.
d. Maximum 2 ½" exhaust pipes.
e. Exhaust must end behind driver.
f. Mufflers are mandatory
g. A 5" I.D. muffler is permissible as part of a 2 into 1 exhaust system
1. Maximum 5" muffler length 18"
2. Maximum 5" length of turn down from end of
muffler is 9".
h. 96 decibels maximum.
1. Measurement will be taken from pit grandstand.
2. One week to fix
3. $20.00 fine every week not fixed.
i. No exhaust pipe in drivers compartment
j. Any car with headers will have to add extra weight.
** These rules are being added as a research and development trial. Failure
to comply will result in the rules from 2007 being reinstated.
Connection Rods
a. Steel Connecting Rods Only
b. No titanium rods
c. No aluminum rods
Chevy Small Block Crank Weight Requirement
a. Minimum 50 lbs.
Engine Placement
a. 73 - 77 Monte Carlo in stock location
1. All others may be set back so the lower ball joints
line up with the number 1 spark plug
b. On GM metric chassis: we will use the Mid-Am measurement
1. 33 1/2" from the top steering box bolt to
the back of the engine block
2. The cross member must be notched out and plated
in the area of the fuel pump only
c. Engine must be centered side to side
Transmission & Drivetrain
Transmission
a. Stock transmission for make and model
b. Transmission must remain completely unaltered
c. All gears must function
Clutch, Pressure Plate and Flywheel
a. Clutch, pressure plate, and flywheel must be stock OEM type
b. No aluminum flywheels
c. Flywheel, clutch disk, and pressure plate must weigh minimum 40 lbs combined
for non crate motors. Crate motors to be determined.
d. Scatter shield or steel bell housing required
e. Aftermarket clutch pedals are allowed
Clutch/Flywheel Inspection Hole
a. All cars are required to have a clutch/flywheel inspection hole
b. If dust cover or clutch release fork hole is in appropriate position to
view them, it will be adequate
c. 1" hole is preferred
Automatic Transmissions
a. Automatic transmissions must function in all gears
b. Torque converter and flex plate must weigh 40 lbs.
1. If teched for converter weight, save fluid, no
allowance for lost fluid
c. No transmission coolers in drivers' compartment
Differentials & Driveshaft
a. Ford 9" may be used in any GM chassis
1. No floater rear ends
2. Must be drum brake
3. Mounts must be from original rear end.
b. Rear ends locked with a spool, mini spool, or welded
1. Factory style limited slip allowed
A. Detroit lockers or other
ratcheting types not allowed
B. No inserts: EZLock, LockRite,
Powertrack, Gearless Locker
2. C-clip eliminators are allowed
c. Driveshaft must be white or bright
d. No aluminum or composite driveshafts
e. All cars must have driveshaft safety hoop of minimum 1" x 1/8"
strap steel
1. Hoop should be 6" behind front U-joint
Cooling System
a. Any radiator may be used
1. Must fit in stock location
2. Hood must close
3. One radiator only
b. Water only
1. Anti-freeze is $20.00 fine
c. Top 180 degrees of fan must be shrouded with minimum 18 gauge steel
1. Factory stock shrouding acceptable if it covers
top of fan
d. Electric fans, if used, must operate by a clearly labeled switch
1. No automatically controlled fans
e. Required: 1 quart (minimum) overflow catch can
Brakes
a. All cars must have safe functioning brakes at all four wheels
1. Disc brake caliper must be OEM for make and model
of frame
b. Stock master cylinder only
1. Must be mounted to firewall or foot box in stock
location
2. No floor mount
3. Stock brake pedal must be in stock location +/-
1/2"
4. No pedal extensions or pedal modifications without
written permission
c. No drilled or grooved rotors
d. No made for racing components, except pads and brake proportioning valve
e. Adjustable brake proportioning valves are allowed when mounted under the
hood
f. No 4 wheel discs unless they were original equipment on the frame used
Wheels & Tires
a. Maximum 8" wide rims
b. No aluminum or Magnesium alloy (Mag) wheels
c. Racing rims on right side
d. Minimum backspace 2"
e. 1" lug nuts required
f. 1/2" minimum wheel studs
g. Tires may be Good Year or Hoosier, but you must race with the tires you
used for qualification
h. No Tire softening or chemical treatment of any kind allowed
i. Track reserves the right to impound any tire for any length of time necessary
to determine if it has been chemically treated.
j. Minimum bare wheel weight: 19 lbs.
k. No wheel spacers allowed.
l. One new tire is allowed per night, three of the tires must have the 141
Speedway brand.
Electrical
a. One 12 volt battery only
1. Securely mounted in a battery box away from fuel
cell and lines
b. Stock type ignitions only
1. No MSD Boxes
2. No traction control
3. Stock distributor ignitions only, no internally
adjustable or chipped distributors allowed
Fuel & Tanks
a. A fuel cell is required
1. Must be mounted between frame rails as far forward
as possible
2. Minimum 11" ground clearance
3. Must have fuel cell protector bar angle braced
to frame
4. Cell must be in a minimum 20 gauge can
5. Must be secured by four 1/8" x 1" straps,
two straps in each direction
b. Mounting will be heavily scrutinized, inspectors decision final
c. No fuel lines through drivers compartment, unless through continuous conduit
d. No bottom draw fuel tanks
e. All vent lines must have check valves
f. No alcohol
g. No oxygenators or nitro additives
h. Fuel must be automotive gasoline only
1. Track reserves the right to sample fuel
i. Mechanical fuel pumps only
Weight
a. Minimum weight for non-crate engine after race is 3200 lbs.
b. Minimum weight for crate engine after race is 3000 lbs.
c. Weighing includes driver seated in the driver's seat
d. All ballast must be painted white and have car number on it
e. All weights must be bolted; (1/2" diameter minimum hardware) or welded
to frame
1. No weight may be lower than 6" from the ground
2. Any weight mounted behind the rear axle may not
be lower than 10" from the ground
f. Loss of weight; immediate disqualification and $20.00 fine
g. Maximum 60% left side weight
h. Technical Inspectors may, at their discretion, add weight penalties for
infractions. Refer to Section 5, Penalties.
Teardown and Penalties
Track Teardown
a. The 141 Speedway will teardown engines on a regular basis.
1. Top End teardown - $40 awarded if legal
2. Bottom End teardown - $125 awarded if legal
b. Any car subject to teardown that leaves the grounds or refuses the teardown
will be suspended for 4 weeks.
c. The track retains the right to tear down any engine at any time without
compensation.
Competitor Teardown
A driver competing in the same feature event may request a teardown of another
competitor.
Requirement of Challenger
a. Request Must Be in Writing
b. Drivers making the request must have finished on the lead lap
c. Protestor's own car must pass inspection
Time Requirement
Requests for a competitor teardown must be made within 10 minutes of the end
of the event.
Amount of Protest Money
a. $200.00 to do a Top End Check
b. $500.00 to do a Bottom End Check
Teardown Findings
a. If found to be legal, protestee receives the protest money
b. If found illegal, the protester receives the protest money; illegal car
earns no points or money for that evening as well as possible long term suspension
Refusal to Teardown
Any car subject to teardown or that has been notified of a protest, that leaves
the grounds or refuses the teardown will be suspended for 4 weeks
Infractions and Penalties
a. Depending on the severity of the infraction, the track may issue a penalty
up to loss of all accumulated points, surrender of pay, and/or suspension
up to a year.
Safety Requirements
Competitors must meet the following safety requirements in order to participate
in an event
a. Driver's suit made of a flame retardant nature. The condition of the suit
is subject to the officials' discretion.
b. A minimum Snell 2000 rated or newer helmet. SA rated helmets recommended.
M rated helmets allowed if used in conjunction with fire retardant head sock.
c. Eye protection is required.
d. Fire retardant gloves are required
e. Fire retardant neck brace is required. A Hans or other style head and neck
support system may be used in place of a brace
Restrictions
a. No two way radios allowed in cars
b. No traction control
c. No turbos, superchargers, or nitrous oxide
d. No Titanium allowed anywhere