PRC As-Cast 225cc LS1/LS2 Cathedral Heads - Big Chamber
PRECISION RACE COMPONENTS
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!
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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!
- Large Bore Configurations for customers looking for bigger bores such as stroker or boost applications
- 68cc CNC Machined Chambers
- 2.065" Stainless Intake / 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 |
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