Engine - Cylinder Heads - Pontiac Motorsports Head

From GM Performance - This aluminum head for small-block V8s offer a substantial increase in both airflow and horsepower with minimal preparation. It has a standard intake port location, and is compatible with most small block V8 components. Ductile iron seats for standard length 2.100 inch intake valve and 1.625 inch exhausts are installed. Phosphorous bronze guides are included with this head, but are not installed. It has conventional 62cc combustion chambers, and uses 3/4 inch reach gasketed 14mm spark plugs.