What is the advantage of using roller rocker arms?

Roller rocker arms, like these COMP Cams Ultra Pro Magnums, reduce friction at the valve tip and rocker arm stud compared to standard stamped or cast rocker arms. This can lead to improved performance and increased durability for your valve train.

What does the 1.6 ratio mean for my engine?

A 1.6 ratio means that for every 1 unit of movement at the pushrod, the valve will open 1.6 units. This effectively increases valve lift, which can help your engine breathe better and potentially produce more power.

What is the warranty on these rocker arms?

COMP Cams offers a lifetime warranty on the rocker bodies against breakage. This warranty is valid for use with valve springs up to 850 lbs of open pressure.

COMP Cams Ultra Roller Rocker Arms 1.6 Ratio 3/8" Stud 1631-

Name: COMP Cams Rocker Arms FS/FW 1.6 3/8 Ultra
Brand: COMP Cams
Price: 281.89 USD
Availability: InStock

COMP Cams Rocker Arms FS/FW 1.6 3/8 Ultra

$281.89

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 roller rocker arms for AMC V8 and Ford V8 engines. Features a 1.6 ratio and 3/8" stud for improved valve train stability.

Key Features

Fits a wide range of AMC V8 and Ford V8 engines, including popular applications like the Ford 289, 302, and 351 Windsor.
Features a 1.6 ratio for increased valve lift compared to stock.
Designed with a 3/8" stud size for secure mounting.
Constructed from investment cast 8650 chromemoly steel with an arched, web-like design for increased strength and rigidity.
Includes oversized trunnions, precision-sorted needle bearings, and hardened roller tips for improved performance and dependability.
Black oxide exterior finish helps prevent corrosion and increases durability.

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Will this fit your vehicle?

Product Details

If you're working on a classic AMC V8 like a 290-401 or a Ford V8 like the 289, 302, or 351 Windsor, these COMP Cams Ultra Pro Magnum roller rocker arms are a solid option for rebuilding or upgrading your engine. They're designed to handle more demanding valve spring pressures, up to 850 lbs open, and offer improved stability over stock rocker arms.

These rocker arms are investment cast from 8650 chromemoly steel, giving them a strong and rigid body. The arched, web-like design helps reduce the moment of inertia, which is good for high-RPM performance. They also feature oversized trunnions, precision-sorted needle bearings, and hardened roller tips for smooth operation and durability. The black oxide finish helps ward off corrosion, and COMP Cams backs them with a lifetime warranty against breakage.

You'll find that these rocker arms offer optimized clearances for retainers and valve springs, meaning you can generally use most common spring diameters and +.050" locks without running into fitment issues. This makes them a versatile choice for a wide range of builds.