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Spike Performance

PRC 247cc CNC Cathedral Ported Cylinder Heads

Regular price $2,950.00 USD
Regular price Sale price $2,950.00 USD
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Precision Race Components all new cylinder head castings completed with 247cc runners. For 408 cubic inch and larger applications with 4.03"+ bore sizing.

Features: 
  • 247cc Fully CNC Ported Intake Runners
  • 84cc Fully CNC Ported Exhaust Runners
  • TSP .750 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!!*

The all new 247cc cylinder head is finally available for customers looking for the pinnacle of LS cathedral port performance.   The new 247cc port has been flow bench tested to flow over 360cfm. 

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