Are these rocker arms compatible with an LS1 cam swap?

YES! Michigan Motorsports LS1 Rocker Arms are specifically designed to handle aggressive camshaft profiles and high-performance cam swaps.

What engines are these rocker arms compatible with?

These rocker arms are compatible with LS1, LS6, and other GM LS-based engines. Will not fit Rectangle Port/"LS3" Style Heads

Do these rocker arms come with a trunnion upgrade?

Absolutely! These rocker arms feature upgraded trunnions with heavy-duty captured needle bearings for improved performance and durability.

Michigan Motorsports LS1 Rocker Arms with Trunion Kit Installed - FITS LS2 LS6 4.8 5.3 5.7 6.0

Michigan Motorsports LS1 Rocker Arms with Trunion Kit Installed - FITS LS2 LS6 4.8 5.3 5.7 6.0

Product ID: 511980170

Description

Specifications

Asin	B01JDIQRQK
Brand	Michigan Motorsports
Customer Reviews	4.7 4.7 out of 5 stars (344) 4.7 out of 5 stars
Date First Available	27 Nov. 2024
Guaranteed Software Updates Until	unknown
Item Model Number	25100
Item Weight	3.63 kg
Manufacturer Part Number	25100
Oem Part Number	LS1 Rocker Arms
Product Dimensions	20.32 x 15.24 x 5.08 cm; 3.63 kg

Reviews

User

Excellent replacement part

Perfect replacement part and seemed to be built better then oem, very happy

14.08.2019

User

For a 2012 Silverado 4.8

So far so good went with a btr truck Norris cam and caddy lifters. Btr rods and springs. For a 2012 Silverado. Haven’t tuned it yet and the check engine light went away. Truck loves it.

18.07.2026

User

Fit perfect

Good quality

20.05.2019

User

Quality parts with fast delivery

Delivered a day earlyNice quality parts

23.07.2026

User

Great value for the money. Installed on 243 heads with no issues.

These are not OEM GM rocker arms, but they feel and look nearly identical, no issues in the casting whatsoever that I can see.These are insurance so if you have a rocker fail the needle bearings don't scatter into your motor like the factory rocker arms will.

10.04.2025

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