What is the primary benefit of the 1.55 ratio on these rocker arms?

The 1.55 ratio on these COMP Cams rocker arms helps to increase valve lift. This means the valves open further and for a slightly longer duration, which can improve airflow into and out of the combustion chamber, potentially leading to better engine performance.

What makes the Ultra Pro Magnum XD design more durable?

These rockers are made from strong 8650 steel and feature a unique billet pushrod seat insert for exceptional durability. They also use precision needle bearings and hardened roller tips, which help distribute loads and reduce wear for a longer service life.

Are any special tools or hardware needed for installation?

These are stud-mount rocker arms designed to fit engines with 7/16 inch rocker studs. While they are a direct replacement for many applications, it's always recommended to refer to the manufacturer's installation instructions for any specific tool or hardware requirements.

COMP Cams Rocker Arms 1.55 Ratio 1808-1

Name: COMP Cams Rocker CS 1.55 7/16in Ultra Pro
Brand: COMP Cams
Price: 59.95 USD
Availability: InStock

COMP Cams Rocker CS 1.55 7/16in Ultra Pro

$59.95

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 with a 1.55 ratio for 7/16" studs. Built from durable 8650 steel for improved strength.

Key Features

Fits a wide range of Chevrolet V6 and Small Block engines, including 265-400 cubic inch applications.
Features a 1.55 ratio to increase valve lift.
Designed for engines using a 7/16 inch stud.
Constructed from durable 8650 steel for long service life.
Includes a unique machined billet pushrod seat insert for added strength.
Utilizes precision 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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Will this fit your vehicle?

Product Details

If you're working on a Chevrolet V6 or a Small Block Chevy engine, these COMP Cams Ultra Pro Magnum XD rocker arms are a solid option. They feature a 1.55 ratio, which helps to increase valve lift for better engine breathing. These are designed for engines using a 7/16 inch stud, common on many 265-400 cubic inch Small Blocks, as well as various V6 applications.

What sets these apart is the well-built construction. They're machined from tough 8650 steel, a material known for its durability and resistance to wear. COMP Cams also includes a unique machined billet pushrod seat insert, adding even more strength where it counts. These rockers are also fully rebuildable and use precision needle bearings along with hardened roller tips. This design helps distribute loads evenly and reduces friction, leading to a longer service life for your valvetrain components. They're built to handle significant spring pressure, up to 1,000 pounds, and work with most common spring and retainer diameters.

These rocker arms fit a wide range of vehicles, including popular models like the Chevrolet Camaro, Corvette, and Chevelle, among many others. They are a well-made component that can help improve your engine's performance and reliability.