Airflow Research developed these 185cc SBF Enforcer cylinder heads for maximum small block Ford performance. They’re manufactured from tough but lightweight A356 aluminum and feature 185cc intake runners and 59cc combustion chambers. Enforcer heads feature a 0.325 in. deck, stock valve locations, and are designed for blocks with a minimum bore of 4.000 in. The heads are available bare or fully assembled with stud mount rocker mounting.