Page 96 of GM Goodwrench Engines Catalog by GM Goodwrench

GOODWRENCH SERVICE REPLACEMENT ENGINES Section V Page 95 August 2004 12366017 262 CID Reman 4.3L 1994 Chevrolet, GMC ST1 (L35)(4.3W) M30, CTF 1995 Chevrolet, GMC ST1 (L35)(4.3W) M50, M30, NM8 (exc. NM8) 1995 Chevrolet, GMC ST1 (L35)(4.3W) M50, NM8, W99 (exc. NM8) 1995 Chevrolet, GMC LM1 (L35) M30 Engine-Specific Content: Oil Pump Notes: Includes 21-PSI Oil Pressure Bypass Valve. INSTALLATION INSTRUCTIONS Instruct customer that the first service interval including an oil and filter change should be between 300 and 500 miles. Replacement of oil related parts: If the original engine failed either catastrophically or due to bearing failure, the engine oil cooler MUST BE REPLACED and the oil lines and remote filter adapter MUST BE REMOVED from the vehicle and thoroughly flushed or replaced. Ingestion of fibers and grit from conditioning pads (i.e. Scotch Brite) is the number one cause of 4.3L engine failure. Intake Manifold: For some engine assemblies (see service manual), sealer (part number 12346004) or equivalent MUST BE APPLIED to lower intake manifold bolts when installing the lower intake manifold. Failure to do so will usually result in increased oil consumption by allowing oil from the engine valley to be drawn into the intake manifold plenum. Since the plenum drain holes empty into cylinder #3 and #4, oil fouling will be greater on the spark plugs in these cylinders. Front Covers: 4.3 blocks with ten-bolt front cover provisions accept either ten-bolt metal covers or, after removing dowel pins, accept six-bolt plastic covers. On OBD II equipped engines, reluctor ring must also be transferred. CAUTION: The oil pump in this engine must be primed before starting engine. DAMAGE WILL RESULT IF ENGINE IS STARTED WITHOUT OIL OR IF OIL PUMP IS NOT PRIMED. 12369214 262 CID Reman 4.3L 1997-98 Chevrolet, GMC P3 (L35) MTI (exc. KL5) 1997-99 Chevrolet, GMC G2,3 (L35) MTI, NA4, ZK3 Engine-Specific Content: Oil Pump Notes: Includes 21-PSI Oil Pressure Bypass Valve. When used in place of 12369214 for 98 and prior vehicles, flywheel 12557584 is required. INSTALLATION INSTRUCTIONS Instruct customer that the first service interval including an oil and filter change should be between 300 and 500 miles. Replacement of oil related parts: If the original engine failed either catastrophically or due to bearing failure, the engine oil cooler MUST BE REPLACED and the oil lines and remote filter adapter MUST BE REMOVED from the vehicle and thoroughly flushed or replaced. Ingestion of fibers and grit from conditioning pads (i.e. Scotch Brite) is the number one cause of 4.3L engine failure. Intake Manifold: For some engine assemblies (see service manual), sealer (part number 12346004) or equivalent MUST BE APPLIED to lower intake manifold bolts when installing the lower intake manifold. Failure to do so will usually result in increased oil consumption by allowing oil from the engine valley to be drawn into the intake manifold plenum. Since the plenum drain holes empty into cylinder #3 and #4, oil fouling will be greater on the spark plugs in these cylinders. Front Covers: 4.3 blocks with ten-bolt front cover provisions accept either ten-bolt metal covers or, after removing dowel pins, accept six-bolt plastic covers. On OBD II equipped engines, reluctor ring must also be transferred. CAUTION: The oil pump in this engine must be primed before starting engine. DAMAGE WILL RESULT IF ENGINE IS STARTED WITHOUT OIL OR IF OIL PUMP IS NOT PRIMED.

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