Chevy Big Block, 396, 427, 454, 502, CORVETTE Script, As Cast Finish, No Booster Relief SPECIAL 458
Part Number special_458

These valve covers are on special because the PCV and breather holes are not centered. There is also a slight cosmetic defect on the top of one cover.

PCV and Breather grommets are provide. New mounting bolts are also included.

A cork composite gasket is recommended and available: Gaskets for PML Big Block Chevy Valve Covers

This set does not have a relief for a brake booster.

There is a slightly raised line of material through fins and script (near o) of one cover.

For reference, see our regular Chevy Big Block, 396, 427, 454, 502, CORVETTE Script Valve Covers, PML Part Number 9096.

This special should fit and function like a regular part.

This is sold as-is and cannot be returned.

Top down view of both valve covers with grommets.

Top down view of both valve covers without grommets.

Inside of both valve covers.

A grommet inserted in the breather hole.

A grommet inserted in the PCV hole.

The hole with the breather grommet without the grommet.

The hole with the PCV grommet without the grommet.

A slight ridge line on the top of one cover. It is very slight and hard to see.