PRC 247cc CNC Ported Cylinder Heads
PRECISION RACE COMPONENTS
Precision Race Components all new cylinder head castings completed with 247cc runners. For 408 cubic inch and larger applications with 4.03"+ bore sizing.
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MADE IN THE USA!!
CAST IN THE USA!!
MACHINED IN THE USA!!
Features:
- 247cc 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
- 2.120" Hollow Stem Intake Valves/ 1.600" Stainless Exhaust Valves
- Factory Rocker Friendly!!
Flow Data:
No Exhaust Pipe
| LIFT | INTAKE FLOW | EXHAUST FLOW |
| .100" | 66 CFM | 57 CFM |
| .200" | 147 CFM | 117 CFM |
| .300" | 228 CFM | 170 CFM |
| .400" | 282 CFM | 206 CFM |
| .500" | 321 CFM | 227 CFM |
| .600" | 343 CFM | 235 CFM |
| .650" | 355 CFM | 241 CFM |
| .700" | 360 CFM | 245 CFM |
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