What is the primary material used for these rocker arms?

These Ultra Pro Magnum XD rocker arms are constructed from durable 8650 steel. This material is chosen for its strength and ability to withstand the demands of engine operation over a long service life.

Are these rocker arms compatible with my existing valve springs and retainers?

Generally, these rocker arms are designed to work with most common diameter valve springs and retainers. However, it's always a good idea to confirm compatibility with your specific valvetrain components.

What does the 'XD' in the product name signify?

The 'XD' designation indicates that these rocker arms utilize advanced FEA and CAD design and development. This engineering approach is focused on improving strength, stiffness, and MOI optimization for demanding applications like endurance, drag, and circle track racing.

COMP Cams Rocker Arms 1.7 Ratio 7/16in Stud 1820-8

Name: COMP Cams Rockers CB 1.7 7/16in Ultra Pro
Brand: COMP Cams
Price: 353.77 USD
Availability: InStock

COMP Cams Rockers CB 1.7 7/16in Ultra Pro

$353.77

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

COMP Cams Ultra Pro Magnum XD rocker arms with 1.7 ratio and 7/16in studs. Set of 8. Fits many Chevrolet big block engines.

Key Features

Fits 16+ vehicle make/model combinations including Chevrolet Impala, Camaro, and Corvette.
Features a 1.7 ratio and is designed for 7/16 inch studs.
Constructed from durable 8650 steel for long service life.
Includes a machined billet pushrod seat insert for exceptional durability.
Uses precision-sorted needle bearings and hardened roller tips to reduce wear.
Fully rebuildable design.

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Will this fit your vehicle?

Product Details

These COMP Cams Ultra Pro Magnum XD rocker arms are a solid option for rebuilding or upgrading the valvetrain on a wide range of Chevrolet big block engines. Designed for applications like the 1965-1976 Impala, 1967-1972 Camaro, or 1965-1974 Corvette, they feature a 1.7 ratio and are designed to work with 7/16 inch studs.

Built from durable 8650 steel, these rockers are made to last and outperform lesser imported parts. They include a unique machined billet pushrod seat insert for added durability, and precision-sorted needle bearings along with hardened roller tips help distribute load and reduce wear. This means a longer service life for your engine. The XD design also incorporates advanced engineering analysis to optimize strength and stiffness, making them suitable for endurance, drag, and circle track racing.

This set includes eight rocker arms, enough for a V8 engine. They are also designed to be fully rebuildable and generally work with most common spring and retainer diameters.