Edelbrock Classic Aluminium Series Valve Covers - Polished Finish (ED4140)348 409 CLASSIC FIN VALVE Chev Chevy 348 409 W series, 3 13 16" overall ht. Part Number: ED4140 Edelbrock first made these aluminium valve covers in the late '50s and they're still a classic. Made of heavy gauge sand cast aluminium, our classic finned valve covers are available in either a classic polished aluminium or durable black powder coated finish. Overall height is measured from base to top at the highest point. Edelbrock classic valve covers