What is the purpose of the billet pushrod seat insert?

The billet pushrod seat insert is a unique feature that adds exceptional durability to the rocker arm. It's designed to withstand the forces from the pushrod, helping to prevent wear and ensure a longer service life for the component.

Can these rocker arms be used with my existing valve springs and retainers?

Yes, these Ultra Pro Magnum XD rocker arms are designed to work with most common diameter valve springs and retainers. This compatibility helps make installation smoother with many existing valvetrain setups.

What does the 1.6 ratio mean for my engine?

The 1.6 ratio means that for every amount the pushrod moves, the rocker arm multiplies that movement by 1.6 at the valve. This effectively increases valve lift, which can lead to improved airflow and potentially better engine performance.

COMP Cams Ultra Pro Magnum XD Rocker Arms 1831-16

Name: COMP Cams Rockers FS 1.6 3/8in Ultra Pro
Brand: COMP Cams
SKU: comp-cams-comp-cams-rockers-fs-1-6-3-8in-ultra-pro-t14-4390878
Price: 677.00 USD
Availability: BackOrder

COMP Cams Rockers FS 1.6 3/8in Ultra Pro

$677.00

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. Built from 8650 steel with a billet pushrod seat for durability.

Key Features

Fits a wide range of Ford vehicles including Mustang, Fairlane, and LTD models.
Features a 1.6 ratio to increase valve lift.
Constructed from durable 8650 steel for long service life.
Includes 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.

⚠️ 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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Will this fit your vehicle?

Product Details

If you're rebuilding the top end of your Ford V8, like a 289, 302, or 351 Windsor, you need rocker arms that can handle the stress. These Ultra Pro Magnum XD rocker arms from COMP Cams are built for serious performance and endurance, whether you're building a drag car, a circle track racer, or just want a more robust setup for your street machine.

These rockers are machined from tough 8650 steel, a material known for its strength and resistance to wear. What really sets them apart is the unique machined billet pushrod seat insert, which adds exceptional durability right where it counts. They feature precision-sorted needle bearings and hardened roller tips designed to distribute loads evenly and reduce friction, leading to a longer service life for your valvetrain. COMP Cams used advanced design tools to optimize their strength and stiffness, ensuring they can handle demanding applications and up to 1,000 lbs of spring pressure. Plus, they're designed to work with most common spring and retainer diameters and are fully rebuildable, meaning you can maintain them for years to come.

This set is specifically designed for Ford engines using 3/8 inch studs and features a 1.6 ratio, which can help improve valve lift and performance. They fit a wide range of classic Ford vehicles, including models like the Mustang, Fairlane, and LTD, so you can be confident in their fitment for your project.