What material are these rocker arms made from?

These Ultra Pro Magnum XD rocker arms are machined from durable 8650 steel. This material is chosen for its strength and ability to withstand the stresses of high-performance engine operation.

Can these rocker arms handle high spring pressures?

Yes, these rockers are built to handle significant valve spring pressure, rated up to 1,000 lbs. This makes them suitable for engines with aggressive camshafts and stiff valve springs.

Are these rocker arms a direct replacement for all small block Chevys?

These rocker arms are designed for Chevrolet, Buick, and Cadillac small block V8 engines that use a 7/16" rocker stud. It's important to verify your specific engine's stud size and application for proper fitment.

COMP Cams Ultra Pro Magnum XD Rocker Arms 1.6 Ratio 7/16in S

Name: COMP Cams Rockers CS 1.6 7/16in Ultra Pro
Brand: COMP Cams
Price: 665.60 USD
Availability: InStock

COMP Cams Rockers CS 1.6 7/16in Ultra Pro

$665.60

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. 1.6 ratio, 7/16" stud, 8650 steel construction. Fits many Chevrolet, Buick, and Cadillac V8 engines.

Key Features

Fits a wide range of Chevrolet, Buick, and Cadillac V8 engines.
Constructed from durable 8650 steel for long service life.
Features a unique machined billet pushrod seat insert for exceptional durability.
Utilizes precision-sorted needle bearings and hardened roller tips to reduce wear.
Designed to handle up to 1,000 lbs of spring pressure.
1.6 ratio for improved valve lift.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

Machined from durable 8650 steel, these COMP Cams Ultra Pro Magnum XD rocker arms feature a unique billet pushrod seat insert for exceptional durability, capable of handling up to 1,000 lbs of spring pressure. This stud mount design is fully rebuildable and incorporates precision-sorted needle bearings along with hardened roller tips. These features work together to better distribute valve train load and reduce wear, contributing to a longer service life for your engine components. They are designed to work with most common spring and retainer diameters.

The XD design leverages advanced FEA and CAD development to optimize strength, stiffness, and moment of inertia. This makes them a solid choice for endurance, drag, and circle track applications where reliability under stress is critical. With a 1.6 ratio and designed for 7/16" studs, these rockers are a popular upgrade for a wide range of Chevrolet, Buick, and Cadillac small block V8 engines, including popular models like the Chevrolet Camaro, Corvette, and Chevelle, as well as Buick Skylark and Cadillac Eldorado.

These rockers are built to last and are a well-built option for those looking to improve their engine's valvetrain performance and durability. They are designed to fit right and provide consistent operation for many miles to come.