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Home >> GMC >> 1980 >> Rally G3500, Van Cargo >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 305", 350" & 400" V8 Engines >> Engine Oiling >> Engine Oiling System >> Rocker Arms and Valve Stems

Rocker Arms and Valve Stems

Oil passes up through hollow pushrods to a hole in upper end that matches hole in rocker arm. Oil sprayed out this hole and across rocker arm lubricates valve stem tip.

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