What is the advantage of roller rocker arms over stock stamped steel rockers?

Roller rocker arms, like these Ultra Pro Magnum units, reduce friction at the valve tip due to the roller tip. This can lead to improved valvetrain stability, especially at higher RPMs, and can help reduce wear on the valve guides and seals.

What is the significance of the 1.6 ratio?

The 1.6 ratio means that for every unit of lift at the pushrod, the valve will open 1.6 units. This effectively increases valve lift without changing the camshaft, which can contribute to improved engine breathing and performance.

Are these rocker arms compatible with aftermarket valve springs?

Yes, these rocker arms are designed with optimized retainer and valve spring clearances. They can be used with most diameter springs, retainers, and +.050" locks without clearance or fitment issues, and are rated for use with up to 850 lbs of open spring pressure.

COMP Cams Ultra Pro Magnum Rocker Arms 1.6 Ratio 7/16" Stud

Name: COMP Cams Rocker Arms FS/FW 1.6 7/16 Ultra
Brand: COMP Cams
Price: 288.03 USD
Availability: InStock

COMP Cams Rocker Arms FS/FW 1.6 7/16 Ultra

$288.03

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 Ford 289-351W and AMC V8. 1.6 ratio, 7/16" stud. Improves valvetrain stability.

Key Features

Fits a wide range of Ford V8 engines (289-302-351 Windsor) and AMC V8 engines (290-401).
Features a 1.6 ratio for improved valvetrain geometry.
Designed for 7/16" rocker arm studs.
Constructed from investment cast 8650 chromemoly steel for strength and rigidity.
Arched, web-like design reduces moment of inertia for better dynamic balance.
Black oxide exterior finish helps prevent corrosion and increases durability.

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Product Details

When you're rebuilding the top end of your Ford 289, 302, or 351 Windsor, or even an AMC V8, getting the valvetrain right is key. These COMP Cams Ultra Pro Magnum roller rocker arms are built to handle the demands of a performance engine, offering improved stability and durability over stock components. They feature a 1.6 ratio and are designed for 7/16" studs, making them a solid option for many V8 builds.

These rocker arms are constructed from investment cast 8650 chromemoly steel, which gives them a strong and rigid body. The arched, web-like design helps reduce rotational inertia, optimizing how the valvetrain behaves at higher RPMs. COMP Cams also applied a unique black oxide finish to help prevent corrosion and increase their lifespan. Inside, you'll find oversized trunnions, precision-sorted needle bearings, and hardened roller tips, all working together for smooth operation and dependable performance. The design also accounts for spring and retainer clearances, allowing for use with most common spring diameters and +.050" locks without fitment issues.

This set includes 8 rocker arms, enough for a V8 engine. They are backed by a lifetime warranty against breakage, so you can install them with confidence. They are rated for use with up to 850 lbs of open spring pressure.