Speedmaster PCE281.1795 Style Aluminum Cylinder Head Bare - LS7 250cc 6-Bolt

The Speedmaster PCE281.1795 is a bare aluminum cylinder head for Chevy GM LS-series (Gen 3/4) engines, in an LS7 style with a 250cc intake runner, a 60cc chamber and a 6-bolt pattern. It is supplied bare, so valves, springs and related hardware are not part of the head as listed.

Key Features:

• Aluminum construction in an LS7 style
• 250cc intake runner volume
• 60cc combustion chamber
• 6-bolt design
• Bare head, ready for your choice of valvetrain components
• Produced using Speedmaster's "Gravity Casting" process, which is intended to give a more uniform and robust casting as a foundation for your build

Sealing Notes:

• LS-series engines seal the intake manifold to the cylinder head with an individual O-ring around each port, unlike most other Chevy V-8s.
• LS1 / LS2 / LS6 style heads and manifolds use GM P/N 12533587, and LS3 / L76 / L92 style heads use GM P/N 1290125.

The LS (Gen 3/4) platform offers many design benefits over earlier small block Chevy designs, most notably in the cylinder heads. This Speedmaster head is aimed at performance enthusiasts building a modern LS engine.