- 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.
Vehicle Fitment:
The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
| Make |
Model |
Years |
| Chevrolet |
Bel Air |
1955 - 1957 |
| Chevrolet |
Nomad |
1955 - 1957 |
| Chevrolet |
One-Fifty Series |
1955 - 1957 |
| Chevrolet |
Two-Ten Series |
1955 - 1957 |
