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Home >> GMC >> 1989 >> Value Van P3500, 4.8 T, Standard >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 5.0L (305") V8 - VIN [H] >> Lubrication >> Description

5.0L (305") V8 - VIN [H]: Lubrication: Description

Gear-type oil pump delivers full pressure lubrication to main oil gallery and through full-flow oil filter. Oil is fed to all the crankshaft and camshaft bearings through main oil gallery (drilled in block).

Valve lifter oil gallery feeds lifters. From lifters, oil is routed through hollow push rods to upper valve train components. Timing chain and sprockets are lubricated by oil drainage from No. 1 camshaft bearing.