Chevy SBC 350 1955-85 Rubber w/Steel Core Valve Cover Gasket Set - Black The Speedmaster blocks are cast

The Speedmaster blocks are cast from high-density iron with extra-thick cylinder walls and decks

These kits are expertly crafted to restore optimal performance and are tailored to match specific cylinder head configurations and camshaft profiles

and are ideal for new projects or replacing missing or damaged mounting caps

Mounting hardware is included

The OEM replacements get harder to find as time goes on

Chevy SBC 350 1955-85 Rubber w/Steel Core Valve Cover Gasket Set - Black The Speedmaster blocks are castSpeedmaster valve cover gaskets are manufactured from high quality rubber, which is molded over and vulcanized to a rigid steel frame. They won't leak, blow out, or get sucked in, the way stock or inferior quality aftermarket gaskets can. These gaskets feature superior quality rubber and steel, which outlast cork and rubber composite designs to provide years of dependable service, especially if you frequently have to remove and reinstall the valve