PrintoSeal Intake Gasket, Big Block Chevy 396-502 V8 Engines, Stock Oval Port w/ Open Heat Crossover, Gasket Material: Composite W/Printoseal, Port Size: 1.82" x 2.05", Thickness: .060"|Fel-Pro PrintoSeal Intake Gasket Big Block Chevy 396-502 V8 Engines.