Engines and Components› Camshafts and Valvetrain

Proform

Roller Rocker Arms: Chevy Big Block; 1.7 Ratio 7/16" Stud

$336.62

SKU: P022 66913C

In Stock
In Stock
Ships by Jun 9
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

These are extruded aluminum roller rocker arms with a 1.7 ratio and 7/16" studs, designed for Big Block Chevy (396-454) engines. They feature anodized aluminum construction with full cage bearing trunnions and are rated for up to 450 lbs of open load pressure. These rocker arms are precision machined to lengthen valve train component life and reduce wear on valve stem tips. They are to be used with a maximum spring diameter of 1.500 inches. The set includes 16 rocker arms.

Fitment

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Specifications

BrandProform
Part NumberP022 66913C

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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