PROFORM 66915C SBC Roller Rocker Arms, 1.60 Ratio, 3/8-Inch Stud Mount, Set of 16

Upgrade your Small Block Chevy valvetrain with the PROFORM 66915C rocker arm set. Designed for 3/8-inch stud-mount applications, these full-roller rocker arms provide a 1.60:1 ratio to support efficient valve actuation and dependable performance. The set includes 16 rocker arms for complete coverage on compatible V8 engines.
Constructed from lightweight aluminum, each rocker arm features a blue anodized finish for added surface protection and a distinctive appearance. The full-roller design helps reduce friction at the valve tip, while the self-aligning configuration supports proper positioning during operation without requiring separate guide plates for compatible applications.
The PROFORM 66915C rocker arms are engineered for Small Block Chevy builds requiring durable, performance-oriented valvetrain components. Their stud-mount design and 1.60 ratio make them suitable for a variety of street, performance, and racing applications. Verify engine compatibility, stud size, valve geometry, and available clearance before installation.
This PROFORM set is supplied as 16 aluminum, blue-anodized full-roller rocker arms. Use the manufacturer’s recommended installation procedures and confirm proper adjustment to help ensure reliable valvetrain operation.

Features:

• Brand: PROFORM

• Part Number: 66915C

• Application: Small Block Chevy engines

• Rocker Arm Style: Full roller

• Mounting Type: 3/8-inch stud mount

• Ratio: 1.60:1

• Material: Aluminum

• Finish: Blue anodized

• Alignment: Self-aligning

• Quantity: Set of 16