Edelbrock 60999 RPM Angled Spark Plug 64cc Flat Tappet Springs for SB Chevy

RPM Small-Block Chevy Angled Spark Plug 64cc, Flat Tappet Springs The Edelbrock #60999 Performer RPM cylinder head is designed for 1955-86 Small-Block Chevy applications. The Edelbrock #60999 Performer RPM head is perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. This cylinder head delivers great throttle response and power from 1500 to 6500 rpm. They also feature the highest quality intake and exhaust valves and valve springs. For use on pre-pollution controlled vehicles only.