michiganmotorsports.com

Michigan Motorsports LS1 Rocker Arms with Upgraded Trunnion Bearings & GM Support Stands Professionally upgraded rocker arms with premium trunnion bearings and GM support stands for superior durability and reliability. Michigan Motorsports LS1 rocker arms have been completely disassembled and rebuilt with upgraded trunnion bearings for long-lasting performance. This kit also includes GM support stands and LS1-style bolts, making it an ideal replacement for factory rockers. Whether your LS motor is stock or built for high horsepower applications, these upgraded rocker arms deliver the reliability, strength, and peace of mind needed for aggressive heads and cam combinations—even proven on our 1,000hp turbo motor. Key Benefits Professionally assembled: LS rocker arms rebuilt with upgraded trunnion bearings—ready for installation. Durability upgrade: Premium 8620 steel trunnions and caged roller bearings replace OEM loose needle bearings for superior strength. Added stability: Includes genuine GM support stands and LS1-style bolts for secure and precise installation. Proven performance: Same rocker arms used in Michigan Motorsports' 1,000hp turbo motor builds. Street and race ready: Engineered for both daily drivers and high-performance racing engines. Fitment Fits LS1, LS2, LS6, LR4, Vortec 5300, LM7, L59, LM4, L33 – 4.8L / 5.3L / 5.7L / 6.0L engines. Kit Includes (16) LS Series Rocker Arms (16) LS-type retrofit trunnions (32) LS-type retrofit rocker arm bearings (32) LS-type retrofit rocker arm retaining rings (16) Bolts for LS trunnion kit (2) GM Support Stands Installation Notes Install upgraded rocker arms to the cylinder heads using the supplied socket head cap screws. Rotate the trunnion so the flat recessed side of the center hole faces upward (the screw must seat against this surface). Torque to 22 ft-lbs, following the OE installation procedure.