LS1 Project

Weld in dowel holes to move head over bores

Index and install new dowel hole.

Remove seat rings for larger valves

Port cylinder head

Cut manifold in half for offset of heads

Flow head and manifold

With manifold cut in half, that makes porting easier.

A second view

Weld manifold together again

A better look at the offset

The bolt holes need to be offset also.

Finished bolt holes

Finished chambers

Rectangular port option

Springs and rocker pads

For further information; Call Thanks for your time, have a great day, John