2006 STREET
STOCK RULES
2006 STREET STOCK RULES
I. GENERAL
All components are subject to inspection and approval or inspecting officials. No equipment will be considered as having been approved by reason of having passed through inspection unobserved.
II. CHASSIS
A. Frame limited to American street type car, models 1960 through current year. No commercial vehicles, convertibles, station wagons, sports cars, or subcompacts are allowed. Frame, body, and engine must be absolutely stock for that make and model car with mo plating allowed on the frame. Front and rear frame sections on unibody cars may be tied together, but they must be in original position on the floor pan and must retain the basic appearance and design. No other bracing or unibody or full frame except through the roll cage. Frame and body must match in make, model, and year.
B. Wheelbases must be stock for make and model of car with a minimum stock wheel base of 110" for unibody cars; 108" for full frame cars. Chrysler/Plymouth with 108" unibody cars are allowed.
C. Frame limited to American street type car, models 1960 through current year. Not commercial vehicles, convertibles, station wagons, sports cars, or subcompacts are allowed. Frame, body and engine must be absolutely stock for that make and model car with no plating allowed on the frame. Front and rear frame sections on unibody cars may be tied together, but they must be in original position on the floor pan and must retain the basic appearance and design. NO other bracing or unibody or full frame except through the roll cage. Frame and body must match in make, model, and year.
III. WEIGHT
The minimum weight after the race, including the driver, must be 3,400 pounds. Add-on weight must be securely bolted see safety rule # 26 (Any add on weight must be bolted to the frame or roll cage with the minimum of two 1/2 inch bolts and be painted white with your number on it. Any car loosing add-on weight during any race while be disqualified from that race.) Every car taking the checkered flag must weigh. Any part, either falling or knocked off the car, will not be allowed to be put back on the car before weighing.
IV. SUSPENSION
Front suspension must be A-frame type. Front and rear suspension must remain stock, unaltered, and in the original position. No modifying or reinforcing of the suspension or steering is allowed unless otherwise stated in these rules. Aftermarket spring and shocks are allowed. Rear weight jacks on coil spring cars are allowed. Front shocks may be moved outside of coil springs for the installation of weight jacks. Weight jacks, adjustable shackles or rear sliders (to replace shackles), and lowering blocks are allowed. No other aftermarket racing parts are allowed, unless otherwise stated in these rules.
V.
BODY
Stock bodies with no modifications or gutting are allowed. All chrome, glass,
plastic, and interior must be removed. All doors and trunks must be welded or
bolted. All headlight, parking light, and taillight assemblies must be removed.
Body must be neat and have acceptable metal stock front and rear firewalls. Full
stock floorboards, trunk, and rear fender wells are required. Inner door panels
may be removed from the driver's and front passengers sides. Car must be
brightly painted in colors that contrast with the car number. Fender wills may
be trimmed to an approximate height of 18" from the center of the axle. Hood
scoop, or box, may be a maximum of 3" tall above the hood with no openings for
out side air and closed on all sides. Underside of the hood may be removed.
Interchanging or replacing of body parts with metal must be approved by the
technical official.
VI. STEERING
Stock steering box must be in original stock location. Steering wheel and steering column may not be moved. No center steering or steering wheel and driver on left side of the drive shaft hump. No modification of the hump is allowed. Chain steering or reduction box is allowed. Quick release steering wheel is permitted.
VII. ENGINE
A. Engine must have been produced for consumer use in that make, model and year of car. Engine size must remain stock for that year, make, and model according to motor's repair manual. Bore size allowed: .060 plus .010 for wear.
B. A small block engine no larger than the sizes listed below will be allowed to replace the engine that came stock in that car as long as the replacement engine is the same block and head design as the original equipment engine.
General Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350 C.I.D.
Ford . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351 C.I.D.
Chrysler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 360 C.I.D.
C. Replacement engines must be stock bore and stroke combinations. Bore size allowed: Stock plus .060 plus .010 for wear.
D. One 2 barrel carburetor only. Holly model #4412, Holley model #0-80787-1 with NO alterations.
E. No electric fuel pumps. Mechanical fuel pumps, only, in original location will be permitted. No regulators allowed.
F. The use of fuel injection, super or turbo chargers, nitrous oxide, and water injection will not be allowed.
G. Stock cast iron intake manifold or cast iron bow-tie intake allowed. No porting, polishing, or enlarging allowed.
H. Battery type ignition only. No magnetos, dual points, or after market ignition. No modification to the distributor allowed except advanced springs. After market plug wires are permitted.
I. Stock or aftermarket 5.7 inch rod allowed. Stock stroke only. An aftermarket crankshaft, Scat part # 9-10442, Casting # 0442 may be used.
J. Any flat top or dish pistons are permitted. No pop-up pistons are allowed.
K. Any flat tappet cam and lifters are permitted. No roller, mushroom, or oversized lifters are allowed. No gear drives are allowed.
L. Stock O.E.M. cast iron heads are required. No porting, polishing, or port matching allowed. Valve size may not be enlarged. Valve springs must be the same size that comes on the head, with one spring only per valve, with or without a damper. Stock diameter steel valve spring retainers only are allowed. Screw in studs and guide plates are permitted. "World Products SR Torquer Casting I.D. # 1052 or Torquer Casting I.D. #1058 cylinder heads are allowed." 1.250 diameter valve springs only. Maximum intake valve size is 2.02 and maximum exhaust valve size is 1.60. Stock rocker arms or steel roller tip rocker arms are allowed. Roller rockers and stud girdles are allowed. Angle plug heads are not legal for Chevrolet powered cars. No aftermarket racing parts are allowed unless otherwise stated in these rules.
M. Lifter valley oil tray, oil accumulator, and any after market oil pan are allowed.
N. Under chassis headers with mufflers are allowed. Optional: Crossover header allowed with mufflers. Drivers' compartment around headers must be totally enclosed.
O.
ENGINE
Engine location must remain in original position. Aftermarket motor mounts and
stands are okay. They must be in original location.
See all safety rules. Cars must have approved windshield screen (expanded metal, etc.) “16 x 20” window nets are mandatory.
IX. BRAKES
Must have O.E.M. hubs and brakes with a minimum of two wheel brakes in good working order. three or four wheel brakes are recommended. Rear disc brakes may be installed. Must use stock components except for aftermarket mounting brackets, one aftermarket master cylinder and brake pedal assembly, with no front to rear or side-to-side adjustment capabilities. One single front brake cutoff allowed.
X. WHEELS
Steel wheels only are required. Width governed in sectional part of the tire rule. XI. TIRES
Maximum 11" sectional width street type passenger car tires are required. They must have D. O. T. numbers and tread design. No modifications of any type, including grooving, are allowed. No special racing tires, duals, knobbies, mud, snow, or off-road tires are allowed. Tires must be available to the general public at normal retail outlets, and they must be warranted by the manufacturer. Tire width will be checked with track tire gauge. Tire bead may be screwed to the rim. Modifications to the inside of the wheel for the purpose of securing the tire to the rim will be allowed. Recaps are allowed. External bead lock on right rear is optional. I.M.C.A. pull offs allowed.
XII. MUFFLERS
Mufflers are not required at this time.
XIII. ROLL CAGE
A. All cars must have a four (4) post roll cage surrounding the driver and anchored to the frame on both sides of the car. A roll bar, in front of the driver and behind the driver, tied together on each side at the top, will form the basic roll cage. All corners of the roll cage must have gussets. A cross bar from the top right corner of the rear roll bar to the bottom left corner of the rear roll bar is recommended. Minimum roll bar material is 1 1/2 " O.D. tubing or 1 5/8" O.D. black pipe with .095" wall thickness. At least three bars must be welded between the front and rear roll cage posts on the left side of the car for driver protection. Additional roll cage protection is optional. Roll cage may be braced to the front frame behind the upper a-frames.
B. Padding of roll bars around leg, arm, and head areas is mandatory.
XIV. REAR-END
A. Stock rear-ends for the make and model of the car required. It may be locked. Enclosed axle rear end only allowed. No late model grand national or quick change rear-ends allowed. Option: 9" Ford rear-end allowed. It must mount in stock location with stock springs for the make and model of car. Floaters rear-ends allowed.
B. Drive shaft must be looped in front and painted white.
C. No spacers are allowed on rear end hubs.
XV. TRANSMISSION
A. Automatic or standard O.E.M. transmission with all working gears. Must have a working clutch, 10.5" minimum clutch face, single disc only. No multi-disc clutch and no aluminum clutch parts.
B. Must have a minimum 11" working torque converter.
C. Automatic transmission coolers are allowed, see safety rules #29 and #30. (Automatic transmission must be approved scatter shield or blanket. Scatter shield may be constructed of 1/4 inch X 3 inch steel 270 degrees around flex plate. Shield may be welded and bolted to floorboard inside car. Transmission cooler must be located under hood or in trunk of car. Any cooler lines running through driver’s compartment must be run through metal pipe or conduit.) Hand clutches are allowed.
D. Explosion proof steel bell housing is mandatory.
E. Car must self start and must have neutral and reverse gear in operating order. All cars must be able to leave pit area and starting line under their own power. A car must be able to go forward and backward from a neutral position with the engine running.
XVI. BUMPERS AND NERF BARS
A. Front and rear bumpers may be constructed of no larger than two (2) inch O. D. pipe. Front bumpers must be at least the width of the frame and may not extend beyond the outside of the frame horn. Front bumper may not extend forward more than a maximum of 42 inches from the center of the lower ball joints. Rear bumper may wrap around to the side of the car, but it may not extend beyond the outside of the rear tires. No open or sharp edges will be permitted. Stock bumpers are optional. All bumpers must be in the original location. Bumper uprights may be 12 inches maximum height. If homemade bumpers are used, then all corners must connect to form a rectangle with rounded 90 degree corners. No single bar bumpers are allowed. If stock bumpers sustain extensive damage and become unsafe, then the technical official may require you to replace the bumper.
B. Nerf bars are optional, but if used, they must be within 2" of the body. Bumpers and nerf bars must have rounded ends with no sharp edges. Nerf bars must be located between the wheels.
XVII. FUEL CELL
Fuel cell must be located safe distance from the driver in the trunk compartment with a firewall between the driver and the cell. Firewalls must be constructed so in case of fire, flames cannot enter driver's compartment around, under, or over the firewall. Cells must be securely mounted with a minimum of two (2), one (1) inch steel straps are allowed.
XVIII. FUEL
Pump gasoline, only, with no additives is allowed. Approved track gasoline is allowed. XIX. RADIATOR
A. Two (2) radiators are allowed. Auxiliary radiators must be located a safe distance from the driver. See safety rule #11 (Radiator fans must have shrouds make of at least 16 gauge steel in all classes. Aluminum shrouds are allowed. Other types of shrouds must be approved the technical official. If a rear radiator is used, overflow tubes must be directed to the rear of the car away from the driver. Radiator hoses that run inside of the car must be enclosed in metal. Drivers must be shielded for rear radiator protection. No car will be allowed to compete without a hood) regarding rear radiators.
B. Electric fans are allowed on the front and/or rear radiators.
C. Fan shrouds must be approved by the technical official.
XX. BATTERY
One 12 volt battery only allowed. See safety rule #27 (Battery must be in a marine type case with at least one 2 inch steel strap 1/8 inch thick, 270 degrees over the case) for installation.
01/29/2006