Dart Pro1 325 Aluminum Big Block Chevy Cylinder Heads w/ 130cc CNC chambers & ported, polished intake runners. These are ported to 345's

This head was setup for an engine but was never used and taken apart


Serious street performance, mild bracket racing, and marine. Over 7,000 RPM, 525+ cubic inches. Can be used on smaller engines with a tight converter. The PRO1 24 Deg 325cc delivers increased airflow at high valve lift for high RPM, big cubic inch engines, and still remains compatible with off the shelf pistons, valve train components, and intake manifolds. Long wearing Bronze valve guides, screw-in studs, multi-angle intake seats with hardened, radiused exhaust seats are standard.  
Heads are sold individually