Our fabricated aluminum valve covers provide a nice a racing look, and their height allows for added clearance for high-performance valvetrain set-ups. These covers feature a short-bolt design with breather holes. These fit Big Block Chevy Mark IV and constructed from T-6061 Aluminum and Tig Welded. TSP's valve covers provide a clean and unique racing aesthetic that only fabricated aluminum can provide, and their increased height allows for added clearance for high-performance camshaft and rocker arm set-ups.