What is the warranty on these COMP Cams rocker arms?

COMP Cams offers a lifetime warranty on the rocker bodies against breakage. This warranty covers the structural integrity of the rocker arm itself.

Can I use these rocker arms with my existing valve springs?

Yes, these Ultra Pro Magnum rocker arms feature optimized clearances that allow for use with most common diameter springs, retainers, and +.050" locks without clearance or fitment issues.

What is the benefit of the black oxide finish?

The black oxide exterior finish on these rocker arms serves a functional purpose by helping to prevent corrosion. It also contributes to the overall durability of the part.

COMP Cams Rocker Arms 1.7 Ratio 1629-1

Name: COMP Cams Rocker Arm348/409 Chevy 1.7 U
Brand: COMP Cams
Price: 45.95 USD
Availability: InStock

COMP Cams Rocker Arm348/409 Chevy 1.7 U

$45.95

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 rocker arms for Chevy 348-409 engines. Features 1.7 ratio and 8650 chromemoly steel construction.

Key Features

Fits Chevrolet 348-409 c.i.d. V8 engines with 3/8" studs.
Features a 1.7 ratio for improved valve lift.
Constructed from investment cast 8650 chromemoly steel for strength and rigidity.
Black oxide exterior finish helps prevent corrosion and increases durability.
Includes oversized trunnions, precision-sorted needle bearings, and hardened roller tips.
Optimized clearances allow use with most diameter springs, retainers, and +.050" locks.

⚠️ 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

Starting with the 8650 chromemoly material, these Ultra Pro Magnum rocker arms are built for strength and rigidity. The arched, web-like design helps reduce the moment of inertia, which is important for optimizing how the valvetrain behaves at higher RPMs. This well-built design is then finished with a black oxide coating to help prevent corrosion and add to its durability.

You'll find oversized trunnions, precision-sorted needle bearings, and hardened roller tips inside these rockers, all contributing to better performance and dependability. COMP Cams also designed these with optimized retainer and valve spring clearances, meaning you can use most common spring diameters, retainers, and +.050" locks without running into clearance or fitment issues. This set is specifically for Chevrolet 348-409 cubic inch V8 engines that use a 3/8" stud and features a 1.7 ratio.

These rocker arms are designed to handle up to 850 lbs of open spring pressure and come with a lifetime warranty against breakage of the rocker bodies. They fit a wide range of Chevrolet vehicles, including models like the Impala, Chevelle, and C10 Pickup from various years.