The World Products WPGT-3SSM800 is a cast iron cylinder head designed for small block Chevy motors. It offers greater performance thanks to its huge intake and exhaust runners, larger valve sizes, and larger combustion chambers. The WPGT-3SSM800 is compatible with most after-market performance components and includes valves, springs, retainers, locks, seals, and machined combustion chambers. It is perfect for drag racing, bracket racing, and circle track engines, and is capable of producing high flow with excellent power.