overhead camshaft


noun

a camshaft in an automotive engine that is located in the cylinder head over the engine block rather than in the block. Abbreviation: OHC

Origin of overhead camshaft

First recorded in 1910–15

British Dictionary definitions for overhead camshaft

overhead camshaft

noun

a type of camshaft situated above the cylinder head in an internal-combustion engine. It is usually driven by a chain or a toothed belt from the crankshaft and the cams bear directly onto the valve stems or rocker arms