GM PART NUMBER 88958602 & GM PART NUMBER 88958604 only.
1 THESE ENGINES ARE SEALED AT THE INTAKE MANIFOLD, CYLINDER HEAD, FRONT COVER, AND OIL PAN WITH
SPECIAL TWIST OFF BOLT HEADS. CRATE ENGINES MUST NOT BE ALTERED, MODIFIED OR CHANGE FROM
FACTORY SPECS.
2 THE SEALED ENGINES MUST REMAIN INTACT AND NOT BE TAMPERED WITH; ANY SEALS THAT HAVE BEEN REMOVED
OR TAMPERED WITH WILL MAKE THE ENGINE ILLEGAL AND NOT ELIGIBLE FOR COMPETITION. THE PENALTY FOR
ANYONE TAMPERING WITH SEALS, MODIFYING ANY INTERNAL ENGINE PARTS, CHANGING THE PARTS FROM STOCK
AS DELIVERED SEALED FROM THE FACTORY WILL BE SUBJECT TO EXPULSION FROM RACING WITH ANY FDLMCS
SANCTIONED EVENT FOR THE REMAINDER OF SEASON AND FUTURE SEASONS.
3 NO CHANGES ARE ALLOWED TO THE ENGINE - INTAKE MANIFOLD, HEADS, VALVE COVERS, FRONT COVER, OIL PAN,
HARMONIC BALANCER OR ANY OTHER PART / OR PARTS ON / OR IN ENGINE.
4 NO VACUUM PUMPS.
5 ALL CRATE ENGINES MUST REMAIN STOCK AS THEY CAME SEALED FROM THE FACTORY. CRATE ENGINES MUST
NOT BE ALTERED, MODIFIED OR CHANGED FROM FACTORY SPECS.
6 ENGINE SETBACK WILL BE 6" FROM CENTER OF TOP BALL JOINT TO THE MOST FORWARD SPARK PLUG.
7 ONE FOUR-BARREL CARBURETOR ONLY OF ANY MANUFACTURE.
8 ENGINE MUST BE NATURALLY ASPIRATED.
9 MAY USE ONE CARBURETOR SPACER (1 INCH-ONE PIECE WITH .040 TOLERANCE MAXIMUM) AND TWO STANDARD
PAPER GASKETS (MAXIMUM 0.070 INCH THICK), ONE GASKET BETWEEN INTAKE TO SPACER AND ONE GASKET
BETWEEN SPACER TO CARBURETOR.
10 ANY STOCK STYLE IGNITION WITH THE EXCEPTION OF MAGNETOS. (NO MAGNETOS OR CRANK TRIGGER IGNITIONS)
11 ALL CARS MUST HAVE STARTER IN WORKING ORDER.
12 CAST OR ALUMINUM WATER PUMPS PERMITTED.
13 NO ELECTRIC WATER PUMP.
14 COLLECTOR TYPE HEADERS REQUIRED. MUST HAVE FOUR (4) TUBES INTO ONE (1) COLLECTOR OF A CONSISTENT
DIAMETER.
15 MUFFLERS NOT REQUIRED UNLESS TRACK MANDATES.
16 NO TRI-Y HEADERS OR MERGED HEADERS ALLOWED
17 GAS ONLY - NO ALCOHOL - NO NITROUS OXIDE, NITRO METHANE OR OTHER NITRATE ADDITIVES OR PROPYLENE
OXIDE.
18 MECHANICAL PUMP ONLY. NO ELECTRIC PUMP.