What material are these rocker arms made from?

These Ultra Pro Magnum rocker arms are constructed from investment cast 8650 chromemoly steel. This material, combined with their arched, web-like design, contributes to increased strength and rigidity.

Will these rocker arms clear my valve springs and retainers?

Yes, these rocker arms feature optimized retainer and valve spring clearances. This design allows for use with most common diameter springs, retainers, and +.050" locks without clearance or fitment issues.

What is the warranty on these COMP Cams rocker arms?

COMP Cams offers a lifetime warranty on the rocker bodies against breakage. They are designed for use with up to 850 lbs of open spring pressure.

COMP Cams Ultra Pro Magnum Rocker Arms 1.8 Ratio 3/8" Stud

Name: COMP Cams Rocker Arms GM LS1 1.8 3/8 Ultra
Brand: COMP Cams
SKU: comp-cams-comp-cams-rocker-arms-gm-ls1-1-8-3-8-ultra-t14-4390729
Price: 361.98 USD
Availability: BackOrder

COMP Cams Rocker Arms GM LS1 1.8 3/8 Ultra

$361.98

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 rocker arms for GM LS engines. Features roller tips and oversized trunnions for improved performance.

Key Features

This product includes eight Ultra Pro Magnum roller rocker arms.
Designed for GM LS1, LS2, and LS6 style heads with 3/8" studs.
Features a 1.8 ratio for improved valve lift.
Constructed from investment cast 8650 chromemoly steel with an arched, web-like design for strength and rigidity.
Includes oversized trunnions, precision-sorted needle bearings, and hardened roller tips for enhanced performance and durability.
Has optimized retainer and valve spring clearances for compatibility with most springs, retainers, and locks.

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Will this fit your vehicle?

Product Details

When you're rebuilding the top end of your GM LS engine, you want parts that are built to last and perform. This set gives you eight Ultra Pro Magnum roller rocker arms, designed for stud-mount applications. They're made from investment cast 8650 chromemoly steel with an arched, web-like design that increases strength and rigidity while keeping the moment of inertia low. This means they're well-built and can handle the demands of a performance engine.

These rocker arms feature oversized trunnions, precision-sorted needle bearings, and hardened roller tips for dependable performance. The unique black oxide exterior finish helps prevent corrosion and adds durability. COMP Cams also designed these with optimized retainer and valve spring clearances, so you can use most common spring diameters, retainers, and +.050" locks without running into fitment issues. They're a solid option for engines like the LS1, LS2, and LS6, and they fit a range of vehicles including the Chevrolet Camaro, Pontiac Firebird, and Cadillac CTS.