Product Description

Michigan Motorsports' LS1 Rocker Arms with Trunnion Bearings Professionally Installed

Fits: LS1 LS2 LS6 LR4 LM7 L59 LQ4 LQ9 LM4 L33 LS4 LY2 L20 LY5 LMG LMF LH6 LC9 LH8 LH9

Also Fits: LS1/LS2/LS6/ LR4 Vortec 5300 LM7 L59 LM4 L33 – 4.8/5.3/5.7/6.0/ Engines. Will not fit Rectangle Port/"LS3" Style heads.

This kit includes:

(16) LS Series Rocker Arms with Roller Bearing Trunnion Upgrade Installed
(16) High Strength Allen head bolts for LS Rockers

Upgraded strength bolts are included for installation.

Whether you have a stock LS motor or a highly modified LS motor, replacing your rockers with a true roller bearing setup is highly recommended. The stock bearings have a tenancy to fail. These rocker arms are a must have for any aggressive heads and cam combo. We utilize LS rocker arms and install new LS1 rocker arm retro-fit trunion kit that replaces the cageless, loose OEM needle bearings and powdered metal trunion with a premium 8620 steel alloy trunion and caged roller bearings for added durability. The caged roller bearings that greatly reduce the possibility of the bearing failure experienced with stock LS1 needle bearings, which can send loose needles throughout the engine upon failure.

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5
LS1 rockers w/ upgraded trunions LQ4

Posted by Gene Greiner on Sep 27th 2021

quick shipping and sturdy packaging . all items were inspected and are as described .
5
Peace of mind

Posted by Richard R Baughman on Sep 9th 2021

Great upgrade
5
Perfect OEM replacement

Posted by J Scott on Oct 20th 2020

When I did my DoD/AFM and VVT delete I replaced everything. These are well worth the cost for cheap insurance and piece of mind. The included instructions made the installation dummy proof. I also got the 5/16 or .80 7.400 pushrods to go with my LS7 lifters and PAC .660 springs........perfect combo.
5
LS1 Rockers

Posted by David Nordman on Sep 25th 2020

Michigan Motorsports was wonderful to work with!
5
Great Replacement

Posted by Zachary Nash on Sep 7th 2020

These rockers are a much better replacement than stock. I installed these on my 05 5.3 Silverado with ease.
5
LS1 rockers w/upgraded trunions & bolts

Posted by Mike WATSON on Aug 9th 2020

Great value for the money. Nice looking parts.
5
LS1 Rocker Arm Upgraded

Posted by Randal B on Jul 17th 2020

Great parts and service would definitely recommend
5
LS1 rockers with upgraded trunions

Posted by Mike Brock on Jun 27th 2020

Perfect replacement with lash area cleaned up
5
Working great

Posted by Anthony Ramirez on May 17th 2020

Well built

LS1 Rocker Arms with upgraded Trunions Installed Fits 4.8 5.3 5.7 6.0 LS2 LS6 LQ4 LQ9 LY5 LM7 L33