Why use a lower ratio rocker arm for engine break-in?

A lower ratio, like the 1.3 ratio on these COMP Cams rockers, reduces valve lift. This helps manage spring pressure during the critical initial run-in period, which is important for new engine components.

What size stud do these rocker arms require?

These Ultra-Gold ARC rocker arms are designed to work with a 7/16" stud diameter, which is common on many Chevrolet Small Block V8 engines.

What is included in this set?

This set includes the necessary Ultra-Gold ARC aluminum rocker arms for a complete engine break-in setup on your Chevrolet Small Block engine.

COMP Cams SBC Rocker Arms 1.3 Ratio 19012-16

Name: COMP Cams Rocker Arms Ultra Gold SBC
Brand: COMP Cams
Price: 582.11 USD
Availability: InStock

COMP Cams Rocker Arms Ultra Gold SBC

$582.11

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 Rocker Arms Ultra Gold SBC. Designed for engine break-in with a lower 1.3 ratio.

Key Features

Fits a wide range of Chevrolet Small Block engines.
Features a 1.3 ratio, lower than stock, for engine break-in.
Designed to reduce excess open spring pressure during break-in.
Works with a 7/16" stud diameter.
Aluminum construction.
Part of the Ultra-Gold ARC Break-In Rocker Set line.

⚠️ 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

When you're building a new Chevrolet Small Block engine, getting the break-in process just right is crucial for its long-term health. These Ultra-Gold ARC Break-In Rocker Arms from COMP Cams are specifically made to help you achieve that perfect initial run-in, especially for those rebuilding a classic V8.

These rockers feature a unique 1.3 ratio, which is lower than stock. This design choice helps reduce the valve lift during the critical break-in period. For engine builders who prefer to limit valve lift without removing an inner valve spring, these are a really smart choice. They're made from aluminum and are designed to work with a 7/16" stud diameter, making them a solid option for many Chevrolet Small Block applications. COMP Cams has set a new standard for the break-in process with these.

This set is designed to fit a wide range of Chevrolet Small Block engines found in vehicles like the Chevrolet Camaro, Chevrolet C10 Pickup, and Buick Regal from various years. They are a well-built component that helps ensure your new engine build gets off to the best possible start.