•Brand New In Box •A Pair of Big Block Chevy Fabricated Aluminum Valve Covers. •Fits 1966-2000 big block Chevy 396, 402, 427, 454, and 502's. Tall style - 3 1/4", Will Clear Almost All Valvetrain Combinations. •Comes With Outer Bolts That Go Through The Top Of The Covers For More Valvetrain Clearance. Valve cover bolts are Also Included. •Made of Thick yet Lightweight High Quality Aluminum Material •Nicely Anodized and Polished For the Shinny Chrome Finish. •Fully TIG welded Aluminum Cover. 1/4" Thick Billet Rail With 1 1/4" Baffled Breather Holes.