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The Edelbrock Performer RPM bare rectangle-port cylinder head is designed for Big-Block Chevy applications and tuned to deliver broad usable power from about 1,500–6,500 rpm for street and rod builds. These bare heads use smaller-than-stock 11/32" valve stems to promote better flow and are machined and finished to support aftermarket valvetrain and performance upgrades on pre-emissions BB Chevy engines.
Edelbrock Single Perf RPM BBC Rect Port Head Bare
