PRC 247cc CNC-Ported Cathedral-Port Cylinder Heads
Fully assembled PRC 247cc CNC-ported cathedral-port cylinder heads for large-cubic-inch LS combinations.
- 247cc CNC intake runners
- 84cc CNC exhaust runners
- 68cc chambers
- 2.120-inch hollow-stem intake valves
- 1.600-inch stainless exhaust valves
- TSP .660-inch PAC dual springs with titanium retainers
- CHE bronze guides
- Factory rocker compatible
Fitment: Cathedral-port LS engines with a 4.03-inch or larger bore, typically 408 cubic inches and larger.
Verify compression, piston-to-valve clearance, pushrod length, and intake-port compatibility before installation.
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