What is the main advantage of a shaft-mount rocker system over a stud-mount system?

A shaft-mount system uses a horizontal shaft as the fulcrum, which is significantly stiffer than a stud. This increased rigidity leads to greater valve train stability and more precise valve operation, especially under high engine loads.

What does the 1.7 ratio mean for my engine?

The 1.7 ratio means that for every amount the camshaft lobe lifts, the valve will open 1.7 times that amount. This results in increased valve lift, which can help improve airflow and potentially increase horsepower.

What specific heads is this rocker set designed for?

This particular COMP Cams rocker set is designed for Chevrolet Big Block engines equipped with RHS Pro Action 320/360 cylinder heads.

COMP Cams BBC Rocker Set 1.7 Ratio 1520CPG

Name: COMP Cams Shaft Rocker Set RHS BBC 1.7/
Brand: COMP Cams
SKU: comp-cams-comp-cams-shaft-rocker-set-rhs-bbc-1-7-t14-4390631
Price: 2485.25 USD
Availability: BackOrder

COMP Cams Shaft Rocker Set RHS BBC 1.7/

$2485.25

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 Shaft Rocker Set RHS BBC 1.7/Eng Rocker Arm Shaft. Adds stability to the engine for more horsepower.

Key Features

Fits Chevrolet Big Block engines with RHS Pro Action 320/360 heads.
Features a 1.7 ratio rocker arm for improved valve lift.
Rocker arms are constructed from strong 2024 aluminum.
Utilizes a hardened 8620 steel shaft for increased rigidity.
Shaft-mount design offers greater valve train stability than stud-mount systems.
Designed using advanced computer technology and field-tested in racing conditions.

⚠️ 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

Starting with a 2024 aluminum rocker arm paired with a robust 8620 hardened steel shaft, this COMP Cams shaft-mount rocker system is built for serious performance. This setup is designed to significantly increase valve train stability, which in turn helps to free up horsepower by ensuring the most efficient transfer of power from the camshaft to the valve. Unlike stud-mounted rockers, the horizontal shaft acts as a much stiffer fulcrum, reducing flex and improving accuracy under high loads.

COMP Cams utilized advanced computer technology in the design of these rockers, and they've been tested in demanding racing environments. The rigidity provided by the shaft system contributes to overall cylinder head stability, making it a well-built component for those looking to maximize their engine's potential. This particular kit features a 1.7 ratio, which is a popular choice for BBC engines with RHS Pro Action 320/360 heads, offering a noticeable improvement in valve lift compared to stock.

When you're rebuilding the top end of your BBC, especially with RHS heads, a shaft-mount rocker system like this is a key upgrade for stability and power. It’s a solid option for anyone serious about getting the most out of their engine build.