What is the advantage of roller rocker arms over stock stamped steel rockers?

Roller rocker arms, like these Edelbrock units, reduce friction at the valve tip and fulcrum compared to traditional stamped steel rockers. This smoother operation can lead to improved valve train stability and potentially more consistent engine performance.

Are the necessary adjustment nuts and locks included with this set?

Yes, this set comes complete with thick-walled adjusting nuts and 4140 steel poly locks. These components are essential for properly setting valve lash and ensuring the rocker arms stay securely in place during operation.

What is the significance of the 'full body design' accommodating larger springs?

The full body design means the rocker arm has ample clearance around the fulcrum and pivot point. This allows it to fit with larger diameter valve springs, which are often used in performance engine builds to handle higher RPMs and increased valve control.

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Specifications

Brand: Edelbrock
Part #: 77770
UPC: 85347777709

Edelbrock Rocker Arms Roller SBC 3/8In 1 5 1 Ratio Set of 16

Name: Edelbrock Rocker Arms Roller SBC 3/8In 1 5 1 Ratio Set of 16
Brand: Edelbrock
SKU: edelbrock-edelbrock-rocker-arms-roller-sbc-3-8in-1-5-1-ratio-set-of-16-t14-128145
Price: 727.32 USD
Availability: BackOrder

$727.32

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Edelbrock Roller Rocker Arms for Small-Block Chevy. 1.5:1 Ratio, 3/8" studs. Made in USA.

Key Features

Fits Chevrolet Small-Block Gen I engines (262-400ci).
Features a 1.5:1 ratio for increased valve lift.
Designed for engines using 3/8" rocker arm studs.
Constructed from lightweight 7129 grade aluminum, manufactured in the USA.
CNC machined body with micro-polished and anodized finish for durability.
Includes a Torrington needle bearing fulcrum and roller tip for smooth operation.

These rocker arms are designed for Chevrolet Small-Block Gen I engines, covering displacements from 262ci (4.3L) to 400ci (6.6L).

⚠️ 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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About this part

Product Details

Starting with a 1.5:1 ratio and a 3/8" stud size, these Edelbrock Red Roller Rocker Arms are built for Small-Block Chevy engines. They are manufactured in the USA from lightweight 7129 grade aluminum, a material chosen for its balance of strength and reduced mass. The body of each rocker arm undergoes CNC machining for precise dimensions, followed by a micro-polishing and anodizing process to enhance durability and resistance to wear.

Inside, you'll find a Torrington needle bearing fulcrum and a roller tip, both centerless ground for exceptionally smooth operation and improved performance. This design helps reduce friction as the rocker arm pivots and rolls against the valve stem, contributing to more consistent valve lift and duration. The full body design is generous enough to accommodate valve springs up to 1.65" in diameter, making them versatile for various engine builds. For secure and precise adjustments, this set includes thick-walled adjusting nuts and 4140 steel poly locks.

This set includes 16 rocker arms, enough for a V8 engine. They are designed to work with engines ranging from 262ci (4.3L) to 400ci (6.6L) Small-Block Gen I Chevrolet applications. When rebuilding or upgrading your top end, these well-built components can make a notable difference in how your engine performs.