Mr. Gasket Valve Cover Gaskets - Cork, Rubber - SB Chevy 355002 Cylinder Head Specifications: Combustion chamber

Cylinder Head Specifications: Combustion chamber volume: 65cc / 70cc

1/8" NPT Female to M16x1

That means they fit right the first time

thicker decks

Mr. Gasket Valve Cover Gaskets - Cork, Rubber - SB Chevy 355002 Cylinder Head Specifications: Combustion chamberMade from high grade cork granules and a neoprene binder, these gaskets will not shrink or stick and provide excellent flange sealing and durability. These gaskets can be reused. Vehicle Applications: 1968 1985 Chevrolet C20 Suburban 1967 1985 Chevrolet Camaro 1980 1980 Pontiac Grand LeMans 1961 1974 Chevrolet K20 Pickup 1969 1972 Chevrolet Kingswood 1975 1978 GMC C15 Suburban 1968 1985 Chevrolet K20 Suburban 1968 1974 Chevrolet G20 Van 1961 1974