Product Description

Michigan Motorsports LS3 Rocker Arms with Roller Trunnion Kit Installed

Fits 6.0L & 6.2L LS Engines – L99, L76, L92, L96, LS9, LSA, LY6, L77 Applications

Upgrade your valvetrain with Michigan Motorsports LS3 Rocker Arms with Roller Trunnion Kit Installed – the ultimate durability and performance upgrade for GM’s 6.0L and 6.2L LS-based engines.

These premium LS3 rocker arms feature an offset fulcrum specifically designed for use with LS3, L99, L76, L92, LS9, LSA, and other “square port” or “rectangle port” cylinder heads. Each set comes with new LS3-specific bolts, ensuring precise fitment and easy installation.

Whether you’re building a stock street engine or an all-out performance setup, replacing your OEM rockers with a true roller bearing trunnion setup is a must. Factory needle bearings are known to fail, often sending loose needles throughout the engine. Our upgraded 8620 steel trunnion system utilizes caged roller bearings to eliminate this weak point, delivering smoother operation, improved stability, and long-term reliability at high RPM.

Engineered for aggressive camshaft and cylinder head combinations, these rocker arms provide superior strength, reduced friction, and the peace of mind that your valvetrain is built to handle extreme conditions.

Key Features:

Set of 16 brand-new LS3 rocker arms preassembled with roller trunnion upgrade
Includes new LS3-style bolts for complete installation
Offset fulcrum design – correct geometry for LS3/L92 “square port” cylinder heads
Premium 8620 steel trunnion with caged roller bearings for superior strength
Replaces OEM cageless needle bearings that are prone to catastrophic failure
Perfect for stock rebuilds or high-performance heads/cam combinations
Improved reliability, reduced friction, and longer valvetrain life under extreme loads

Includes:

(16) New LS3 Series Rocker Arms with Upgraded Roller Bearing Trunnion Kit Installed
(16) Bolts for LS3 Style Rocker Arms

Applications Include:

6.0L and 6.2L LS Engines: L99, L76, L92, L96, LS9, LSA, LY6, L77

Product Videos

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Trunnion Upgrade Install on OEM LS3 Rocker Arm

Take a look at how we upgrade the trunnions in OEM LS3 Rocker ...

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Product Reviews

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5
Better than imagined

Posted by Carl on Jul 15th 2025

Installed these when replacing valve stem seals and not only does my truck run better but there is almost no valve train noise. Highly recommend this upgrade.
5
LS3 Rockers w Trunnions

Posted by Nick K on Jul 21st 2023

Nice quality and easy install. Would definitely buy again.
5
Rocker arms

Posted by Ralph David Jones on May 13th 2023

Best rockers for the money
5
Ls3 rockers

Posted by Jay on Nov 24th 2022

This is my 3rd set 3rd motor build great product fast shipping
5
Great product and experience

Posted by Matt on May 27th 2021

I highly recommend Michigan Motorsports for your LS needs. Super fast shipping and great customer support!
5
Rocker Arms

Posted by Terri Turner on Apr 6th 2021

They worked out great for our Pontiac GT GTO
5
Rocker arms

Posted by Jeremy on Mar 17th 2021

Very nice looking product havent installed though
5
LS3 ROCKER ARMS - WITH ROLLER TRUNION KIT INSTALLED

Posted by Corwin Snyder on Dec 3rd 2019

First, let me thank Michigan Motorsports for fast shipping and including the necessary bolts! The rockers installed with no issues and appear to be high quality parts. Looking forward to firing up the engine soon.
5
LS3 Upgraded Rocket Arms

Posted by Troy on Nov 20th 2019

Can’t beat the price of these rockers with the trunion upgrade already done. Will definitely recommend.

LS3 Rocker Arms - With upgraded Trunnion Kit Installed -Fits 6.0L 6.2L L99 L76 L92 L96 LSA LY6 L77 LS9