Street Stock
Late Model
Limited Late Model
Open Wheel Modified
Sprint Cars
Street Stock
Outlaw 4′s
4-Cylinder Bombers
Dirt Daubers
STREET STOCK RULES
STREET STOCK ADDENDUM
4/08/2010
IGNITION SYSTEM:
Stock OEM or stock replacement distributors ONLY.
HEI or dual points with only one set of points operable.
All distributors must have factory casting numbers on housing.
Modules must be stock or stock replacement ONLY!
Modules must be factory type sealed units.
NO ACCEL, MSD OR HIGH PERFORMANCE BOARD-TYPE MODULES.
Coil must remain in distributor and be stock or stock replacement ONLY.
Coil must fit in stock cap. Only one coil will be allowed on car.
NO ACCEL, MSD OR HIGH PERFORMANCE COILSAny variations or exceptions must be cleared IN WRITING by East Bay Raceway Park tech.
This is a protest division.
1. Only American-made sedans with a minimum of 108″ wheel base plus or minus 1″. NO front wheel drive vehicles allowed.
NO convertibles or compact-size bodies. Racing seats and belts mandatory. Must have a complete roll cage around driver. Must have thee horizontal safety bars on left side.
2. Street Stock bodies must remain stock appearing.
Stock appearing roofs and window panels only. Fiberglass, steel or aluminum allowed. Any roof or window panel not stock will have to be stock appearing and stock dimensions. All upholstery must be removed. All glass must be removed and a safety screen installed in the space of the windshield. Full window screen mandatory (See General Safety Rules.) All safety bars must be approved and padded. All cars must have complete firewall and floor pan. Complete means that it must go from door post to door post and from in front of drivers pedals to behind main hoop of cage. The firewall and floorpan do not have to be stock as supplied by manufacturer and can be made of aluminum or steel. Inside drivers area may be boxed similar to that of a Late Model, but it still has to have floorpan under boxing. See Tech Inspector for specifics before you do it. If it does not meet his specs you will be required to remove it. There must be three bars in front of driver at windshield, see Tech. Must have full window screen – 1 x 2 minimum. NO stock bumpers–must be pipe bumper with rounded ends turning back towards frame rails. NO ROUGH END OR JAGGED BUMPERS.
NO SPOILERS ALLOWED.
BODY WIDTH: Maximum 72” across top of rear deck
Maximum 76” across center of car.
Maximum 82” across bottom of car.
Hood Scoop: Maximum 4” tall by 18” long.
3. Street Stock suspension is as follows:
Racing springs and shocks are permitted. No coils over shocks. Coil springs do not have to be the same size diameter side to side or front to rear. Leaf springs can be different size from side to side and have different number of leafs side to side. NO lengthening or shortening of A-frames or spindles. Spring buckets may be adjustable. Shock mounts must remain in relative stock location. Bottom shock mounts on rear end only may be moved 2 inches. Trailing arms must be same length. Top two the same length and bottom two the same length. Top does not have to be the same length as bottom. NO adjustable trailing arm. NO aluminum shocks. No adjustable shocks (fixed only). Wedge bolts are optional.
4. Steering quickeners O.K.
5. Unibody frames may be tied together. Check with Tech Inspector.
6. Pipe bumpers mandatory–no O.E. bumpers. Ends must be rounded off. NO sharp edges. Must not extend past body of car.
7. No aluminum driveshafts.
8. GM cars must run GM engine. Ford cars must run Ford engines.
9. Batteries may be placed inside of car. All batteries must be safely covered and secured. Only one 12-volt battery per car. NO 18-volt batteries.
10. Stock fuel tank must be removed. Mandatory fuel cell must be mounted securely in trunk area. Gasoline only. No electric fuel pumps. Minimum
four straps around tank. Fuel tanks 22-gallon max. Fuel petroleum base. (Gas) regular pump-type gas, cam 2 or equivalent. NO trick additives. NO alcohol.
11. No Street Stock driver may compete in the Street Stock Division and any other division at East Bay Raceway on the same night. If a driver drives in any other division for four races or more he may not return to the Street Stock Division for the remainder of that year.
12. Street stocks must weigh a minimum of 3100 pounds.
13. Rear pan hard bar is optional.
14. Non-ported stock O.E.M. cast iron block only.
All engine parts must have casting or part numbers on them for identification. Engines must remain stock as manufactured with the following exceptions.
14A. GM Crate Motor #88958602 is legal to run in the Street Stock class with a Holley 4412 carburetor. Carburetor must pass track gauges. The GM 602 motor will be allowed to run with factory sealed aluminum intake and oil pan as long as all seal bolts are proper and have not been tampered with. ALL GM 602 crate motors must have either original factory seals or seals from an EAST BAY RACEWAY PARK approved re-builder. All re-builds must be arranged thru EBRP officials in advance of re-build. Any other re-builds will not be accepted for competition. ONLY GM 602 Crate motors with proper un-tampered seals or seal bolts will be allowed to run Gm intake #12366573 dual plane intake, all other motors will berequired to run a Quadra-Jet intake. ONLY GM 602 Crate Motors with proper un-tampered seals or seal bolts will be
allowed to run GM oil pan #25534353, all other motors will be required to run Stock or OEM Stock replacement oil pan.
15. Block only the following engines and over bores listed below will be accepted.
CHEVY 350 CI UP TO .060 PLUS
FORD 351 CI UP TO .060 PLUS
CHRYSLER 361 CI UP TO .010 PLUS
CHRYSLER 340 CI UP TO .060 PLUS
All engines must maintain stock bore and stroke combination.
Example:
CHEVY 350 CI 4″ BORE X 3.48 STROKE
CHRYSLER 360 CI 4″ BORE X 3.578 STROKE
CHRYSLER 340 CI 4.040″ BORE X 3.314 STROKE
FORD 351 CI 4″ BORE X 3.50 STROKE
16. You may deck the bloc k – pistons must not protrude above deck. NO TOLERANCE.
17. SCREENS – oil restrictions – lifter tray legal no other machine work allowed on block.
18. PISTONS
a) 3 Ring flat top pistons only.
b) Cast – Hypereutectic – OK – 2 or 4 Eye Brow
c)NO light weight, NO floating wrist pins, NO gapless rings. TRW Power Forged #2256 is OK.
19. HEADS
Cast iron O.E.M. stock production or World Products SR heads ONLY.
NO PORTING, POLISHING, GRINDING, PORT MATCHING
OR ACID-PORTING ALLOWED.
NO GM VORTEC HEADS.
a) Valve size must match stock production, for casting being used.
b) Max valve size 194 intake 150 exhaust.
c) 1 piece solid valve only.
d) Valve stern diameter Chevy 11/32, Ford 11/32, Chrysler 3/8, Ford-.005.
e) Milling of head combustion side only.
f) Valve springs stock diameter.
g) Heads may be machined to accept large valve springs; valve spring size no larger than 1.300.
h) Screw-in studs and guide plates – poly lock nuts, pinning of studs -
All O.K.
i) All motors must run stock size rockers for the motor used. No changing or mis-matching of rocker sizes from original factory sizes. Long slotted rockers OK.
20. CRANKSHAFTS
a. Stock for engine being used. NO grinding, polishing, shot peen, knife edging or drilling.
b. Eagle 4340 #435034815700 Steel Stock Replacement approved. Eagle #103503480 OEM Spec Replacement (cast) approved.
c. Minimum 51 lb. cranks.
21. RODS
a. Stock for engine being used.
Eagle Stock Replacement # SIR5700BPLW (565 grams) approved.
b. Heavy Duty – APR – bolts and nuts allowed
Scat #3-1CR5700P allowed.
c. No floating wrist pins
22. CAMSHAFT
a. Hydraulic solid lift flat tappet cam allowed
b. NO rollers – NO mushroom lifters.
c. Lifter tray is legal in side of valley.
No gear or belt drives allowed.
d. Offset keyway – 3-way crank gear. Cam offset key – Cam button allowed.
23. LUBRICATION SYSTEM
a. No dry sump systems
b. STOCK OR OEM REPLACEMENT Oil pan -steel baffles in pan or block O.K. NO RACING OIL PANS.
c. Inspection hole in left side of pan for rod – crank inspection.
IF NO HOLES YOU WILL PULL PAN
24. INTAKE MANIFOLD
a. Quadra-Jet intake manifold cast or aluminum only. Must be stock production with part number and firing order number on manifold.
b. No bowtie.
No truck.
No marine manifold.
NOTE:
Check your part number. If it is not listed for a stock production automobile no high performance, it is not going to pass tech.
25. CARBURETOR
a. Holley 4412 mandatory. MUST pass track tech gauges.
b. No performance carburetors. NO Holley 4412HP carburetors will be allowed.
c. No air filter hats
d. No air boxes
e. No duct work to air cleaner
f. Round-type air cleaners only
g. Choke and outside linkage may be removed
h. Maximum 1.65″ height adapter plate (including gaskets).
26. IGNITION
a. Stock OEM distributors only
b. No trigger ignition system
c. Coil must remain in distributor
d. Point style Ignition – Dual points O.K. but only one set working
e. Stock-type coil only–must fit stock cap
f. Only one coil will be allowed on car
27. COOLING SYSTEM
a. Water pump, cast iron only
b. Radiator fan; steel only (no flex or plastic)
c. No electric fans or pumps
d. Aluminum pulleys are allowed on crank or water pump. NO racing harmonic balancers.
e. Steel or aluminum water pump pulleys allowed.
f. Radiator – mounted in stock location
g. Radiator – steel or aluminum
h. Lower pully can be aluminum
28. FUEL – GASOLINE ONLY
a. Fuel subject to testing at anytime
b. Any infraction of fuel rule will result in a complete disqualification
29. EXHAUST HEADERS OR CAST IRON MANIFOLDS
a. 3″ maximum outlet
b. Must be under car
c. No cherry bombs or cut-out mufflers
d. Schoenfeld #112535 mufflers are mandatory with 98 decimals at trackside
Schoenfeld #112530 mufflers are also allowed.
See general rules for penalty in cases of loss or no muffler at tech shed
30. TRANSMISSIONS
a. Must remain stock as intended for street use
b. All gears in working order
c. Three, 4 – speed cast or aluminum O.K.
d. Auto transmission must have torque convertor in working order
31. CLUTCHES
a. Conventional clutches minimum of 10″ disc
b. NO hydra clutches or release bearings or master/slave cylinders release bearings
c. L-88 fly wheel – legal
d. Mini-starter – legal
e. Hydraulic throw-out bearings are approved for competition.
32. REAR ENDS; NO ALUMINUM PARTS
a. 6M 10 – 12 Bolt O.K. – 9″ Ford O.K.
b. 5-lug axles only – Harden axles O.K.
c. Mini-Spools (hardened)
d. No full spools. No Detroit lockers. No limited slip or positractions
33. TIRES
Track approved tires as supplied by EAST BAY RACEWAY PARK Racing Tire Division
Hoosier 26.5 or 27.5/8.0-15 A, D or H40 ONLY
No tire softeners. No soaking of tires. No preheating of tires. No chemicals of any type which alter softness of rubber allowed on or inside tire except oxygen or nitrogen. If found, tires will be confiscated, driver will receive a minimum $500 fine, loss of all points, accrued to date and/or possible suspension. This could turn into an EPC problem if it continues. No grinding or removal of factory markings. No snow chains.
34. BRAKES
NO driver controlled adjusters allowed in driver’s area.
Dual or single reservoir pedals allowed.
NO adjustment cables or valves that allow driver to change brake bias
During the running of an event will be allowed.
RULE BOOK DISCLAIMER
The rules and/or regulations set forth herein are designed to provide for the orderly conduct of racing events and to establish minimum acceptable requirements for such events. These rules shall govern the condition of all events, and by participating in these events, all participants are deemed to have complied with these rules. NO EXPRESS OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM THE PUBLICATION OF OR COMPLIANCE WITH THESE RULES AND/OR REGULATIONS. They are intended entirely as a guide for the conduct of the sport and in no way guarantee against injury or death to any participant, spectator or official.
The race director or Head Tech Inspector shall be empowered to permit reasonable and appropriate deviation from any of the specifications herein or impose any further restrictions that in their opinion do not alter the minimum acceptable requirements. ANO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM SUCH ALTERATIONS OR DEVIATIONS. Any interpretation or deviation of these rules is left to the discretion of the officials and is final and binding.
On occasion when situations arise that are not covered by written rules herein, special rulings may be put into effect by the track officials. Once such rulings are acted upon, they may become an act of policy and will be added to the existing rules of procedures.
The Management of East Bay Raceway Park
