2012 Super Stock RULES - Updated 2/29/12    
Rules in this rule book will be the rules for Spencer Speedway for the next 3 years with minimal changes. We are trying to keep rules uniform so there will be no big changes for year to year.

BODY AND CHASSIS:
  1. Open to all two door North American made steel bodied passenger cars from 1974 to 1989 with a 108" wheel base minimum. No pony or sport cars. Must be full tube rear housing.
  2. Car body and overall appearance must retain stock dimensions. Altered body lines will be significant reason for disqualification. The body may not be lowered on the frame. The body must be mounted in original factory location in relation to the frame. Frame must remain stock front to rear. Rear may be reinforced, but must remain stock. Rear may be crossed. Stock dimension windshield pillars must be retained. Windshield pillars and windshield angle must remain stock. Steel or Aluminum bodies only, no fiberglass roofs aloud.
  3. All glass , including windshield, must be removed. Windshield must have 4- 3 inch tabs( 2 on top, 2 on bottom) and 2 inter center braces. Windshield must be replaced by Lexan.
  4. Body molding including door handles must be removed.
  5. Interior of the car must be completely stripped. Driver must sit in stock position. Floor must be stock front to rear. Rusted areas may be replaced with 22- gauge steel.
  6. Battery must be anchored and mounted inside a spill proof container outside of the driver’s compartment and not behind the rear axle.
  7. Front firewall must be steel with all the holes covered with no less than 20- gauge steel, and must remain in the original position and location. Rear firewall must be completely closed off from the trunk compartment with 20- gauge steel, which must be riveted or welded.
  8. No cock pitting of driver’s compartment. Right side floor may not be any higher than the transmission tunnel.
  9. Front inner fender panels may be removed.
 10. Stock front and rear bumpers must be in original location. No bracing outside of the bumper. You may use plastic nose and tail panels only.
 11. All uni-body cars must have a minimum 2 inch sub frame. The sub frame must be no less then .120 wall thickness.
 12. Fiberglass hoods allowed. No hood scoops. No bolts or other supports to raise the center of hood at windshield side. No air boxes of any kind. 2 inch cowl hood for air cleaner (2101 is taller) lower air filter bottom is allowed to gain clearance. Hood must be closed of at windshield.
 13. Body panels are not to go below frame rails on any part of the car.
 14. Any added weight must be painted white with car number in black or dark color.
 15. Car must have full frame front to rear as it come from factory.
 16. Radiator must have an overflow can mounted securely, one gallon minimum. Radiator must be stock type. NO ANTIFREEZE ALLOWED!!
 17. Driver’s side 1" web net with a quick release is mandatory. Mesh nets are prohibited.
 18. Steel drive shafts only
 19. Single viewing surface mirrors allowed, must be the same dimension as the factory original.
 20. All cars must be neatly painted and professionally lettered. Numbers 00-99, 2 digits only. No letters. Numbers must be 18" high.
 21. All teams must have and maintain a one-way radio/ scanner for direct communication with the Spencer Speedway tower. This helps with positioning and safety. TRACK RADIO- 154.600.
 22. ALL CARS MUST HAVE A WORKING FIRE EXTINGUISHER IN EASY REACH OF THE DRIVER OR TRACK CREW, 2 ½ LBS. MINIMUM.

ENGINE:
  1. Stock unaltered engine and transmission combination. Including all engine accessories except air filters and valve covers. Any diameter front engine pulleys allowed (v-belt types only).
  2. Engine must match make and model of car used. All engine blocks must be standard production. Blocks must have stock external and internal measurements. No V6 engines allowed
  3. Engine maximum displacement:
  Ford 351 c.i. maximum overbore .060
  GM 350 c.i. maximum overbore .060
  Mopar 360 c.i. maximum overbore .020
  4. All cars must be self starting. No push starting.
  5. Crankshaft height is 15".
  6. Aftermarket crankshafts may be used if the are a direct replacement for stock. Minimum weight is 48 lbs. No scalloped counterweights. No reduced diameter counterweights. No gun drilled crankshafts. Stock factory OEM bearing diameters only. Normal balancing , with drilling perpendicular to main journals only. Stroke must remain stock. Hydraulic or solid camshafts may be used. No roller cams of lifters of any type.
  7. Pistons: Aftermarket stock type pistons may be used. No internal heat coatings or thermal barriers. GM engines must use stock OEM type flat top or dished pistons. No domed pistons allowed. All Ford and Chrysler must use OEM equivalent 9-1 CR pistons.
  8. All engines must use stock type crank, and block.
After market connecting rods may be used if they are a direct replacement for stock OEM in weight. Rod must meet or exceed the factory stock weight of the rod it replaces.
  9. Extra capacity oil pans allowed. Oil pan must have an inspection hole 1 1/4 inches. Must be unobstructed. Located 9 ½ inches from rear of block base or 4 ½ inches from front block base, 1 1/4 inches from oil pan rail. Side kick out oil pans will be allowed. Side rails must be exposed. No thru bolt pans.
 10. Cylinder heads and exhaust manifolds must be factory stock OEM production cast iron only. No angle milling of heads. No offset locator pins. No porting, polishing , or grinding allowed. All valve seats and bowl work must be machine cut concentric to valve guide with pilot. No undercut valves allowed. Heads must be stock OE or World Products head # 42660 or # 42670 , no vortec, no bowtie, no centerbolt heads. No marine or truck manifolds. No epoxy or fillers to be used in manifolds or heads. Screw in or pinned studs allowed. NO Chevy angle plugs. NO boss Ford, or Chryslers Hemi’s, or Pontiac Ram Air heads allowed. NO 305 Chevrolet heads allowed, except on 305 c.i. engines.
 11. No engine oil coolers. Transmission oil cooler must have mechanical connections. No hose clamps!!
 12. Compression ratio must not exceed 10:1
 13. Camshaft: Any hydraulic or solid cam may be used. Stock OEM diameter lifters must be used (.842 diameter for Chevy). No roller lifters. Lifter bores must not be indexed. Lifter bores must remain stock. Sleeves are not allowed.
 14. Rocker arm ratio 1.5 or 1.6 Stud girdles allowed. Roller rockers, roller tip rockers will be allowed.
 15. Valves maximum intake diameter 2.02", maximum exhaust 1.60". Valves must be stock steel. No PRO-flow valves, no titanium, etc.. Steel retainers only.
 16. Carburetor must be factory stock only with a maximum throttle plate opening of 1 11/16". Throttle plate may be drilled to help engine idle fuel mixing. No thinning of throttle shafts or riveting of throttle plates. The shafts must have stock type screws in throttle pates with at least one thread protruding through throttle shaft. No marine or truck venturi clusters may be used. Only choke plate may be removed. Any JETS are ok. Brass floats are ok. Holly 4412 is optional with the removal of the choke plate. Carburetor adapter with gaskets, maximum height is 1.130". Carburetor adapter may not be altered angle milled. Two straight holes only bored perpendicular to the top maximum size 1.750". No HP HOLLY CARBURETORS. No HP holly metering blocks.
 17. Fuel pump: Electric fuel pumps are not permitted, cooling of the fuel pump is not permitted, only mechanical fuel pumps in stock location are allowed.
 18. All air must be filtered through the element. Top of the air cleaner must be solid with NO holes. Top and bottom of the air cleaner must be of the same diameter. NO air induction, ducts, baffles, tubes, funnels, or hats which may control the air leading to or through air filter, or inside air filter to redirect air into carburetor. The filter base must have a minimum round opening of 5 inches.. It will be permissible to shield the front area of the air cleaner up to a maximum of one half of the air cleaner circumference and no wider than the height of the element. A one (1) inch maximum height spacer may be used between the carburetor and the air cleaner. K&N Plastic top and Bottom ARE NOT Allowed. Only paper air filters will be allowed.
 19. Cast iron intake manifold (TWO BARREL ONLY) . Manifolds must not be cut below carburetor (to open up intake to allow cross flow between intake inlets. MUST BE STOCK!! No center dump manifolds allowed. 2101 manifold (ford manifold EDL-2181) allowed, new style only. No paint or coating of any kind

Exhaust:
  1. Exhaust pipes must extend behind the driver’s door. No H-pipes or cross over exhaust. Must be duel exhaust. Exhaust must be right and left. May exit under cars, must have down turns if exiting under cars. No one sided exhaust. LOBAC MUFFLERS ARE REQUIRED. No muffler no racing!!
  2. Factory throttle cable linkage allowed. Dual return springs mandatory.
  3. Officials reserve the right of reject improper mounted exhaust systems! Exhaust headers must be a commercially manufactured header using a steel primary tube size of 1 5/8 “ minimum and a maximum of 1 3/4 “outside diameter. 1 5/8 “ to 1 3/4" step header permitted. Must be a conventional four into one collector with a maximum size of 3 1/2 inch OD. Maximum header flange will be 3/8 inch. NO header plates between heads and headers. NO adjustable headers. NO inserts allowed in any part of the header or collectors. NO 180 degree headers. NO stainless headers. NO merge. NO pyramid. No Try y or similar style collector permitted. NO exhaust pipes allowed in driver's compartment. NO thermal wrap permitted on headers. NO crossover pipes permitted. All exhaust pipes must be a single round steel 3" or 3 ½ " pipe, with muffler.

IGNITION:
  1. Only stock OEM/ HEI ignition allowed. After market distributor cap and rotor allowed. Stock ignition modules may be replaced with MSD# 8364 or pro comp # ML-482 circuit board modules. Ignition coils must be factory stock replacement. After market ignition wires may be used.

TRANSMISSION:
  1. Stock production automatic transmission for year and model of car is allowed. Power glide transmissions will be allowed as an optional transmission with the following gear ratios only: 1.76 ratio V8 transmission or 1.82 ratio 6 cyl. transmission. No other ratios allowed. No high performance or special order transmissions allowed. NO MODIFYING OF TRANSMISSION IN ANY MANNER IS ALLOWED!! Reverse gear must be in working order.
  2. All cars must have stock, unaltered OEM V8 cylinder torque converter with a stall speed between 1500-2300 RPMs. Stall speed will be checked with car in gear, on the ground measured with a tachometer. 11 & 12 torque converters only.
  3. Manual transmission will be allowed. All gears must work!
  4. The disc clutch housing assembly or cover shall be made from steel ONLY. Any single disc OEM production type clutch assembly, with a minimum 10 1/2 inch diameter steel hub disc. Stock type pressure plate. Any type throw out barring. No lighting or machine work on fly wheel of any kind. Clutch MUST be mounted inside an approved bell housing..
  5. Stock type 3 or 4 speed transmissions. Only 1.1 to 1 in high gear.

WHEELS AND TIRES:
  1. Street stock steel wheels only. Maximum width of 8". No more than 1 inch off set difference between any 2 wheels side to side, front to back. After market wheels are permitted. All wheels must have the same diameter, either 14" or 15" . Must have steel backer plates welded to center of wheel. Heavy studs and nuts must be used. Studs must extend through nuts. REINFORCED WHEELS RIGHT FRONT, OVERSIZED STUDS AND LUGS RIGHT FRONT ARE MANDATORY. No aluminum, mag or sport type wheels allowed. Racing wheels are permitted.
  2. Only designated track tires are allowed. Tires to be announced.
  3. Maximum tire width 76" measured outside to outside.
  4. Wheel spacers not allowed.
  5. No use of bleed off or pop off to control tire pressure.
  6. Tire durometer readings will be checked.
  7. Safety hubs, right front only are allowed. No wide 5 design.

SUSPENSION:
  1. Parts must be stock for make and model no heavy duty or limited product. Racing springs may be used; springs must mount in original spring mounting bracket position and location, only 4 springs are allowed per car and must be stock in appearance. Coil springs may be cut no adjustable shocks. Front shocks may be relocated. No coil over shocks. Spring is to be 3/4" diameter maximum.
  2. Stock sway bar must be standard size. Sway bar link must be standard factory production type. Rear sway bar not allowed.
  3. A-frames must remain stock and unaltered. After market A- frames allowed. They must be stock dimension and in stock location.
  4. Stock type shocks only (non-adjustable)..
  5. Jack bolts are allowed front and rear.
  6. NO MONO BALLS ALLOWED ON ANY PART OF YOUR CAR!!
  7.After market front spindles allowed, must be stock dimension. No lowering or offsets allowed.
  8. Tubular front upper arms permitted, must remain stock dimensions. Must use stock mount, non adjustable. Recommended upper control arms UBM15-0809-5R and UBM15-0829-5L, all additional stock mount, non-offset replacement length arm will be at the discretion of the officials. Left must be on the left, right must be on the right. Lower control arms; must be in original OEM position. Replacement Neoprene bushing allowed. No steel bushings. No offset, aluminum or bearing type bushings in control arms.
  9. Lower control arm: stock or aftermarket as in Johnson’s part #JC1-09-02-003 ?L or R. Or similar. (www.johnsonchassis.com)

REAR ENDS:
  1. Locked rear ends only!! Limited slip rear ends are not allowed. No Detroit lockers. Ford 9" rear ends allowed.
No transmission or rear end combination shall exceed 560 final gear.

BRAKES:
  1. Stock OEM brakes are mandatory on all 4 wheels and must be in 100% working order. Rear disc brakes allowed. Single piston calipers only. Must have stock type pads and rotors. No heavy duty or limited production parts. Duel brake system will be allowed. Must be mounted as close to stock as possible. No bias adjustments in reach of driver.

WEIGHT:
Engine compression: 9.0or less must weigh 3200lbs
Engine compression: 9.1-10.1 must weigh 3300 lbs
Weight of car MUST be posted on drivers side hood of car.
All weight is WITH driver in car. All cars must have a 56% left side weight with driver al all times. No allowance for gas after the race. No weight may be mounted in driver’s compartment. Weight must be painted white with car # in dark paint. Weight adjustments will be made on over competitive cars.
Ride height will be 6"
Maximum rear weight will be no more then 49% of total weight WITH driver.

ROLL CAGE:
  1. Cars must have a complete, full roll cage around the driver that must be welded to the frame. Tubing for roll cages must be 1 3/4" out side diameter and must be made of steel. Minimum wall thickness of roll cage tubing is .090.
  2. There must be at least 4 horizontal and 3 vertical bars within any remaining doors. All welds must have gussets.
  3. All roll cage bars, side bars or other protrusions that driver may come in contact with must be properly padded.
  4. Doors must be welded.

SEAT AND SHOULDER HARNESS:
  1. All seats must be aluminum and must have headrest or high back seat. Seat must be attached to roll cage and frame with 6 piece grade 5 bolts 3/8 diameter and USS washers. Back of seat must be mounted to the roll cage.
  2. Quick release 5 point restraint system that is designed for racing is mandatory. Also mandatory are minimum 3" wide lap belt and shoulder harness and a 2" wide antisubmarine strap with a central release. All safety belts must be no more than 2 years old and must have identification tag. All harnesses subject to tech inspectors approval.
  3. Steering wheel hub must be padded.
  4. Shoulder harness must be attached to the roll cage. Absolutely no original equipment belts.
  5. HANS OR HUTCHINS HEAD AND NECK RESTRAINTS ARE MANDATORY!!

FUEL CELL & FUEL:
  1. All cars must have a fuel cell, 22 gallons maximum. Plastic cells are permitted, but must be enclosed in a steel container made of minimum 20 gauge steel. An 8 gallon cell is recommended.
  2. Fuel cell must be mounted in center of trunk. No off set permitted. Bottom of fuel cell must be no lower then the centerline of the rear axle. Fuel cell must be securely fastened, bolted or strapped. Minimum outside diameter of 1" “X” welded beneath fuel cell, frame rail to rail.
  3.Sunoco fuel will the official fuel for Spencer Speedway for the next 5 years (starting 2010 season). Sunoco purple 110 fuel will be sold at Spencer Speedway. There will be no mixing of fuel and no additives added to the fuel. Fuel will be tested weekly. Any fuel not meeting track specs will be deemed illegal and you will be disqualified. All car owners in the Super Stock class is required to purchase and run 5 gallons of the Sunoco 110 fuel each week, unless you are running a Crate engine. You need to make sure a receipt is given to you for your purchase. You will be asked for your receipt at some point during the night so keep it handy. Your receipt will be numbered and a copy will be kept in your file. You may purchase a barrel of fuel and that will count towards your weekly fuel purchase. If you are found not to have purchased 5 gallons of fuel at the track each night you could lose all money and points for that night, and a fine may incur.

THE IDEA BEHIND THIS DIVISION IS TO HOLD EXPENSES DOWN. WHILE THE ABOVE RULES OFFER A GOOD OUTLINE, NOT EVERYTHING CAN BE COVERED BY A WRITTEN RULE. IF YOU WANT TO RUN ANYTHING NOT COVERED ASK JOHN WHITE OR CHUCK DERIDDER FIRST BEFORE DOING SO. IF YOU DON’T AND ANYTHING IS FOUND IT WILL AUTOMATICALLY BE RULED ILLEGAL. ANY ITEM FOUND ILLEGAL WILL BE CONFISCATED!!
 

Any Track Related Questions Please Contact: John White (631)745-9805