Description

These valve covers are built for the Chevrolet Big Block Gen II (Mark IV) V8 family — 396, 402, 427, and 454 CID — as found in Chevelle, Camaro, Corvette, C10/C20 trucks, Impala, El Camino, and Monte Carlo applications using the short-bolt valve cover pattern.

Construction is fabricated aluminum with a 1/4 in. billet aluminum sealing rail, finished in clear anodize to resist corrosion while keeping the natural aluminum appearance visible. Internal baffling is built in to help control oil movement and reduce blow-by, and breather holes are provided for crankcase ventilation routing.

These covers use the short-bolt mounting pattern specifically — Big Block Chevy heads were produced in both short-bolt and long-bolt valve cover configurations, so confirming which pattern your cylinder heads use is a required step before ordering, not just before installation.

Gaskets, grommets, and mounting hardware are not included with this set, so these should be sourced separately to match your specific application.

Applications
Fits Chevrolet Big Block Gen II (Mark IV) V8 engines: 396, 402, 427, and 454 CID. Common platforms include Chevelle, Camaro, Corvette, C10/C20 trucks, Impala, El Camino, and Monte Carlo, specifically on cylinder heads using the short-bolt valve cover pattern.

Installation
Covers use a perimeter-bolt mounting style. Because gaskets, grommets, and hardware are not included, these need to be selected to match your gasket surface and existing breather/PCV setup. Confirm short-bolt vs. long-bolt head pattern, rocker arm clearance, and hood clearance before ordering.