PRC As-Cast 225cc LS1/LS2 Cathedral Heads

Precision Race Components all new as-cast cylinder heads completed with CNC machined chambers & valve guides. For LS1/LS2 applications requiring a high flow aftermarket cylinder head at a unbelievable price! Click Here to SEE why we build better heads! MADE IN THE USA!! CAST IN THE USA!! MACHINED IN THE USA!! As-Cast 225cc Intake Runners With CNC Machined Chambers & Valve Guides For Unmatched Flow! Small Bore Configurations for extra compression applications while keeping good piston to valve clearance 62cc CNC Machined Chambers 2.065" Stainless Intake Valves / 1.600" Stainless Exhaust Valves Utilizes Factory LS1 Rocker Arms TSP .660 Dual Spring Kit w/ PAC Valve Springs and Titanium Retainers! The all new PRC 225cc As-Cast cylinder heads are finally available for customers looking for the ultimate as-cast cathedral LS heads available. The new PRC as-cast intake port has been flow bench tested to flow over 320cfm & can support everything from smaller camshaft street engines all the way to all out race engines. This cylinder head is a combination of a max-effort, high-flowing port combined with a smaller chamber designed for max power in stock cube applications. Flow Data (4.00" Flow Plate - No Exhaust Pipe): LIFT INTAKE FLOW EXHAUST FLOW .100" 68 CFM 56 CFM .200" 145 CFM 113 CFM .300" 210 CFM 164 CFM .400" 257 CFM 200 CFM .500" 300 CFM 214 CFM .600" 318 CFM 229 CFM .650" 321 CFM 230 CFM