Product Description
Michigan Motorsports LS1 Rocker Arms with Upgraded Trunnion Bearings Professionally Installed
Includes Michigan Motorsports Billet Rocker Stands.
Fits 1997-2013 LS Based 4.8L 5.3L 5.7L and 1999-2006 6.0L Engines
LS1 LS6 LS2 LR4 L20 LY2 LM7 LC9 LM4 LS4 L33 L59 LH6 LY5 LMG LMF LQ4 LQ9
Will not fit 2007-later models of 6.0L. Will not fit 6.2L.
LS Rocker Arms have been disassembled, and new Trunnion Bearings have been professionally installed
New upgraded strength bolts and billet support stands 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 retrofit trunnion kit that replaces the cageless, loose OEM needle bearings and powdered metal trunnion with a premium 8620 steel alloy trunnion 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.
This kit includes:
- 16 LS Series Rocker Arms with Roller Bearing Trunnion Upgrade Installed
- 16 High Strength Allen head bolts for LS Rockers
- 2 Billet Rocker Mounting Stands
Install the upgraded rocker arms to the cylinder heads using the new socket head cap screws supplied. Be sure to rotate the trunnion so that the flat recess side of the trunnion's center hole faces upward (the socket head cap screw must seat against this recessed flat side of the hole). Tighten the cap screw to a value of 22 ft-lbs following the OE installation procedure.
