Product Description

By combining our own cylinder head knowledge and experience, extensive computer simulations, many hours of flow bench testing, consultation with race teams and engine building specialists, CHI have developed a number of CNC porting programs for the LS series of cylinder heads.

Using the same basic principles as the 3V heads, maximum flow from minimal port size, the modified factory castings provide significant gains in flow from their standard form, and deliver huge gains in power and efficiency to you LS powered vehicle.

We can provide just a porting service with seats cut, or complete assemblies with valves and springs to suit your chosen camshaft.
Some models are available on a changeover basis.

We have CNC port programs for: