Michigan Motorsports' LS1 Rocker Arms with Trunnion Bearings Professionally Installed
LS1 Rocker Arms have been disassembled and new Trunion Bearings have been professionally installed
LS1 style 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.
Fits all these applications: 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
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Orignal miles 322k, 2001 Silverado Z71, replaced Cruz the old ones were ok but needed needed to be replaced!! No failures on oem stuff, just a lot of road miles to South Texas ! Best replacement rocker arm for the old, still runs hard 5.3l. Replaced 4l60e @ 197k, Get these better than OEM STOCK STEEL PINIONS! Maybe I'll get another 322k + on these!
Easiest people to deal with. Incredibly fast delivery time! Only two days to Australia.
great product. fast shipping
Nice parts with very fast shipping. Highly recommended!
Good quality very well-built works great
These work great! The price is spot on! The only way your beating this price is doing it yourself and as most of us with limited time to work on our projects this saved both time and frustration also giving you the reliability that your looking for!
My kit came with bolts that were high quality made in USA!
Wasn't sure what to expect but had good customer service from this company and decided to give them a try, glad I did. High quality parts and even better service!
Rocker arms fit perfect on my engine ls1 great product