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 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.
