What is the benefit of a 1.5 ratio rocker arm?

A 1.5 ratio rocker arm effectively increases valve lift compared to a stock 1:1 ratio. This allows more air and fuel mixture into the cylinder and more exhaust out, which can lead to improved engine performance and throttle response.

Are these rocker arms compatible with all valve springs?

These Ultra Pro Magnum XD rocker arms are designed to work with most diameter springs and retainers. However, it's always a good idea to confirm compatibility with your specific spring and retainer setup before installation.

What does it mean that these rockers are rebuildable?

Being fully rebuildable means that the internal components, like the needle bearings and roller tips, can be replaced if they wear out over time. This allows for a longer overall service life for the rocker arms compared to non-rebuildable designs.

COMP Cams Ultra Pro Magnum XD Rocker Arms 1801-12

Name: COMP Cams Rockers CS 1.5 3/8in Ultra Pro
Brand: COMP Cams
SKU: comp-cams-comp-cams-rockers-cs-1-5-3-8in-ultra-pro-t14-4390814
Price: 473.37 USD
Availability: BackOrder

COMP Cams Rockers CS 1.5 3/8in Ultra Pro

$473.37

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, 1.5 ratio, 3/8" stud. Built from durable 8650 steel for improved engine performance.

Key Features

Fits Chevrolet Caprice, Impala, Malibu, Monte Carlo, Pontiac Bonneville, Grand Prix, and Parisienne models.
Features a 1.5 rocker arm ratio for improved valve lift.
Designed for 3/8-inch rocker arm studs.
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.

⚠️ 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

COMP Cams is well-known for making performance engine parts that help racers and enthusiasts get the most out of their vehicles. These Ultra Pro Magnum XD rocker arms are a prime example of their commitment to durability and performance. They are designed to handle the demands of a performance engine, offering improved valve control and a longer service life compared to stock components. If you're looking to rebuild or upgrade the valvetrain on your V6 Chevrolet, these rockers are a solid option.

These rockers are machined from strong 8650 steel, a material chosen for its ability to withstand high spring pressures, up to 1,000 lbs. A unique feature is the machined billet pushrod seat insert, which adds exceptional durability right where it's needed most. Inside, precision-sorted needle bearings and hardened roller tips work together to distribute loads evenly and reduce friction, meaning less wear and a longer life for your engine's valvetrain. They are also designed to work with most common spring and retainer diameters, making them a versatile choice for many builds. The XD design itself has been developed using advanced computer modeling to optimize strength and stiffness.

This set features a 1.5 ratio and is intended for use with 3/8-inch studs on Chevrolet 200-262 cubic inch V6 engines. They fit a range of vehicles, including models like the Chevrolet Caprice, Monte Carlo, and Pontiac Grand Prix from the 1980s. These rockers are also fully rebuildable, meaning you can service them down the road if needed.