Description
- High Quality Construction
- Dyno Proven 20 Horsepower Gains
- Reduce Valve Stem & Guide Wear
- Fits 65-74 Big Block
As a result, these rocker arms have been dyno-tested to produce 15-20 horsepower increases, making valve stems and guides last longer. Magnum Rollers fit 1955, 1956, 1957 Chevy big block engines (1.70 ratio) like a glove, helping ensure a lasting fit. Each rocker is supplied with a rocker ball and lock nut. Set of 16.
