PROFORM 66905 Small Block Chevy Rocker Arm Set, 1.50 Ratio, 3/8-Inch Stud Mount

Upgrade your Small Block Chevy valvetrain with the PROFORM 66905 rocker arm set. Designed for engines using 3/8-inch stud-mount rocker arms, this set features a 1.50:1 ratio and a durable steel construction suited for dependable performance in street and performance applications. The non-roller design provides a straightforward replacement solution for compatible SBC cylinder heads and valvetrain configurations.
The PROFORM 66905 set includes 16 natural-finish rocker arms, providing complete coverage for applications requiring a full set. Each rocker arm is engineered for consistent operation and reliable contact with the valve train, helping support proper valve motion when matched with the correct engine components, pushrods, studs, and clearances.
Feature: Brand: PROFORM
Feature: Part Number: 66905
Feature: Application: Small Block Chevy
Feature: Mounting Style: 3/8-inch stud mount
Feature: Rocker Arm Ratio: 1.50:1
Feature: Design: Non-roller
Feature: Material: Steel
Feature: Finish: Natural
Feature: Quantity: Set of 16
Verify engine compatibility, stud size, rocker arm clearance, and valve train geometry before installation. Proper setup and adjustment are essential for reliable operation and long service life.

Features:

• Brand: PROFORM

• Part Number: 66905

• Application: Small Block Chevy

• Mounting Style: 3/8-inch stud mount

• Rocker Arm Ratio: 1.50:1

• Design: Non-roller

• Material: Steel

• Finish: Natural

• Quantity: Set of 16