Edelbrock part No. 41859 Classic Series Valve Covers are designed for Chevy Big-Block V8 1965 & Later applications and have a Satin finish. 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.