First-rate performance, progressive engineering and unmatched quality are the foundations of the Pro Action head series, and the RHS BBC heads feature all of them and more. Capable of making up to 1000 horsepower, Pro Action BBC Cylinder Heads provide you with more features, better flowchart numbers and superior "as cast" finished quality. They are available in as cast or fully assembled and are a tremendous performer for Big Block Chevy street, drag race and powerboat applications.
Patented Clean Cast Technology provides superior port-to-chamber transitions & optimal airflow efficiency.
Hardened multi-angle intake & radiused exhaust valve seats are utilized to outflow the competition by up to 5%.
Premium bronze valve guides for superior heat dissipation & longer life.
Refined water jacket design improves thermal conductivity & extra thick deck faces allow angle milling for compression.