PRC 247cc CNC Cathedral Ported Cylinder Heads

Precision Race Components all new cylinder head castings completed with 247cc runners. For 408 cubic inch and larger applications with 4.03"+ bore sizing.

• 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.