PRC 237cc CNC Ported Cylinder Heads cathedral user-settable value into Holley via

user-settable value into Holley via an EGT input

and coming soon

providing full camber and caster adjustability

Includes: 24x LS Engine Main Harness - EV6 Injector Harness - DBW Throttle Body Harness - 4L60E/4L80E Transmission Control Harness - Terminator X MAX ECU - ECU Main Power Harness - Bosch LSU 4

PRC 237cc CNC Ported Cylinder Heads cathedral user-settable value into Holley viaPRC SS237CNC Precision Race Components all new cylinder head castings completed with 237cc runners. For 370 cubic inch and larger applications with 4. 00"+ bore sizing. MADE IN THE USA!! CAST IN THE USA!! MACHINED IN THE USA!! Features: 237cc Fully CNC Ported Intake Runners 84cc Fully CNC Ported Exhaust Runners TSP . 660 Spring Kit w PAC Valve Springs & Titanium Retainers 68cc CNC Machined Chambers CHE Bronze Guides 2. 100" Hollow Stem Intake Valve 1.