Competition Use Only, Not Legal for Road Use

Precision Race Componentsall new cylinder head castings completed with247ccrunners. 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!!

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