Product Description
GM OEM LS Rocker Arms with Upgraded Trunnion Bearings Installed
LS1 style Allen head bolts are included for installation.
Whether you have a stock LS motor or a highly modified LS motor, replacing your rockers with a true caged 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 OEM GM 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.
Fits the following applications: LS1/LS2/LS6/ LR4 Vortec 5300 LM7 L59 LM4 L33 – 4.8/5.3/5.7/6.0/ Engines
This kit includes:
- 16 OEM LS Rocker Arms with Upgraded Roller Bearing Trunnion Kit Installed
- 16 Upgraded Allen Head Rocker Arm Bolts
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.
