The SHP is cast from A356-T6 aluminum and designed to work with most off the shelf components, so you won’t need to worry about acquiring costly custom components.

- A356-T6 aluminum alloy

- Bolt on compatibility: Standard valve angle and spacing are retained to allow use of off the shelf pistons and valve train components

- Multi-angle intake seats and radiused exhaust seats dramatically increase air/fuel flow

- Hardened exhaust seats are compatible with unleaded gasoline

- Manganese bronze valve guides extend cylinder head life

- Machined for 1.250 or 1.437 diameter valve springs

- Straight spark plug configuration

- All cylinder heads sold individually