Description
Maximum performance/full competition, unlimited oval and super classes. 7,000+ RPM, 400+ cubic inch engines. PRO1 23° 230cc Platinum series heads are intended for maximum effort competition engines with large displacements and very high RPM usage. Long wearing Bronze valve guides, screw-in studs, multi-angle intake seats with hardened, radiused exhaust seats are standard. Best of all, our precision cast ports produce outstanding airflow without time consuming porting.