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The Edelbrock Performer RPM CNC bare cylinder head for 1962–1979 Pontiac 389–455 engines matches the Performer RPM specifications but adds a CNC-machined combustion chamber for consistent, precise combustion geometry and improved flow. The 72cc chamber version suits higher-compression builds. Patterned after the Ram Air IV port flange, this bare head offers a performance-oriented foundation for builds requiring precision chamber control.
Edelbrock Cylinder Head Pontiac Performer RPM CNC Chamber 72cc Bare Single
