The Edelbrock #4177 Classic Series Valve Covers are compatible with Chrysler Small-Block Magnum applications. Edelbrock first made these aluminum valve covers in the late '50s and they're still a classic. Made of heavy-gauge sand-cast aluminum, Overall height is measured from base to top at the highest point. Edelbrock classic valve covers can be machined to accept breathers if desired. 3.75 in. Height