PRC 247cc CNC Ported Cylinder Heads

PRC performance cylinder head engineered for LS-platform builds. 247cc intake runners (CNC) 47cc chambers for optimized compression 2.100" intake / 1.600" exhaust (typical LS cathedral) (typical spec) TSP .660 spring kit with PAC springs & titanium retainers CNC-machined valve guides and precision seat work Street/strip proven with excellent torque and horsepower balance Direct bolt-on for LS-platform applications Flows exceptionally well for high-RPM combinations