JavaScript Disabled

Your JavaScript appears to be disabled. JavaScript is necessary for various functions, such as order checkout, to operate on this web site. Please ensure that JavaScript is enabled.

Outdated Internet Browser Detected

Your web browser appears to be out of date. Soon you will not be able to create a secure connection to our web site using TLS 1.0. Please upgrade your browser from current version( ). Learn more about TLS.

Always Save the Most at Summit!
In-Store Pickup Location

Chevrolet Performance LS Rocker Arms 12579617

Rocker Arm, Exhaust, 1.8 Ratio, Cast, Roller Fulcrum, Chevy, Small Block, LS7, Each

Estimated Ship Date: Loading...Processing Today Would you rather pick it up? Select Location

Brand: Chevrolet Performance

Manufacturer's Part Number: 12579617

Part Type: Rocker Arms

Product Line: Chevrolet Performance LS Rocker Arms

Summit Racing Part Number: NAL-12579617

Rocker Arm Mounting Style: Pedestal

Self-Aligning: Yes

Rocker Arm Ratio: 1.8

Rocker Arm Style: Roller fulcrum

Shims Included: No

Rocker Arm Material: Cast iron

Rocker Arm Body Style: Narrow

Rocker Arm Fasteners Included: Yes

Rocker Arm Nut Style: Self-locking

Slot Style: Long

Rocker Arm Finish: Natural

Quantity: Sold individually.

Notes: Fits exhaust position only on LS7 style heads. Straight design. No offset.

In-Store Pickup: Choose In-store pick-up (OH, NV, GA, TX) on our web site.

Get smooth valvetrain performance! Chevrolet Performance LS rocker arms install easily on your LS cylinder heads without any modifications. Add some additional horsepower and increase your rpm capability with a set of Chevrolet Performance LS rocker arms.


Questions & Answers Ask a Product Question

Will this fit for a 5.3 cathedral port head? Instead of the factory 1.7 ratio, is it a strait across swap?

Asked by BENJAMIN on December 16, 2017


Thank you for your question. The Chevrolet Performance 12579617 rocker arms will not fit your 5.3L cathedral port cylinder head. However, we do offer a Summit Racing part number G6981 in 1.8 ratio that will work great on your factory cylinder heads.

Summit RacingSummit Racing Answer - January 09, 2018

Answer This Question

+See All Questions (1)

Most Helpful Reviews Review This Product

1 Customer Reviews for Chevrolet Performance 12579617 - Chevrolet Performance LS Rocker Arms

Average Customer Review

5 Star


4 Star


3 Star


2 Star


1 Star


+See All 1 Reviews

they do their job and they do it well

Summit RacingSummit Racing Verified Purchase

I bought these rocker arms for my 2003 5.3 LM7 as an upgrade from the stock 1.7:1 rocker arms for a little bit of extra lift. They brought my torque from 3 grand to about 1.5 grand. Was able to use the stock rocker rail and bolts, no machining/casting imperfections. Worth the money.

0 of 0 found this review helpful.

report abuse

Report Abuse X

If you feel that this review is inappropriate and should be removed from the site, report it to us by clicking the "Report Abuse" button below.


Reviewer: from IL

Date: August 29, 2018

Ease of Installation

Some parts are not legal for use in California or other states with similar laws / regulations

Back To Results
Email this page
Sign Up for Email X