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! MADE IN THE USA!! CAST IN THE USA!! MACHINED IN THE USA!! Features: - 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 - Large Bore Configurations for customers looking for bigger bores such as stroker or boost applications - 62cc or 68cc CNC Machined Chambers *can be milled to your desired cc - 2.06" Intake / 1.600" Stainless Valves - Utilizes Factory LS1 Rocker Arms - Includes TSP Dual Spring Kit w/ PAC .660" Valve Springs! ***NOW AVAILABLE WITH HOLLOW STEM INTAKE VALVES!!! SAVES APPROXIMATELY 15 Grams!!!*** 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. You have your choice of the 62cc chambers used in the PRC 227cc cylinder heads or the 68cc chambers used in the PRC 237cc cylinder heads. We can mill additionally to get to your desired chamber size for no additional charge!