PRC 227cc CNC Ported Cylinder Heads

The Texas Speed PRC 227cc CNC Ported Small Bore Cylinder Heads are engineered for LS1/LS2 engines with 3.9"-4" bore applications. These heads feature fully CNC ported 227cc intake runners and 84cc exhaust runners, designed to maximize horsepower and torque in stock cube configurations. The precision machining extends to the 62cc chambers, which are optimized for increased compression. The PRC 227cc heads have been flow bench tested to over 320cfm, supporting a wide range of street to race engine builds. These heads are made, cast, and machined in the USA. They are compatible with TSP Spring Kits rated to .660" lift, ensuring they can handle aggressive camshaft profiles. The design is noted for its use in record-setting applications, such as the Texas Speed 98 Camaro that achieved a 9.66 1/4 mile time in heads/cam stock bottom end configuration.