Ultra Pro Magnum's strong, rigid web-like design reduces moment of inertia. Made of 8650 chrome moly and finished in black oxide, rocker arms have oversize trunnions, sorted needle bearings, and hardened roller tips.
- Rocker Arm Mounting Style:
- Stud
- Self-Aligning:
- No
- Rocker Arm Ratio:
- 1.70
- Rocker Arm Style:
- Full roller
- Stud Size:
- 7/16 in.
- Shims Included:
- No
- Rocker Arm Material:
- Chromoly steel
- Rocker Arm Body Style:
- Standard
- Rocker Arm Fasteners Included:
- Yes
- Rocker Arm Nut Style:
- Polylock
- Maximum Spring Diameter (in.):
- N/A
- Finish:
- Black oxide
- Quantity:
- Sold as a set of 16.
- Make:
- Chevrolet
- Engine Family:
- Chevy big block Mark IV
- Engine Sizes:
- 6.5L/396-7.4L/454
- Years:
- 1966-1990
- Engine Family:
- Chevy big block Gen V
- Engine Sizes:
- 7.4L/454
- Years:
- 1991-1995
- Engine Family:
- Chevy big block Gen VI
- Years:
- 1996-2000
