Product Description
Michigan Motorsports LS1 Rocker Arms
with Upgraded Trunnion Bearings Professionally Installed & GM Support Stands
Fits: LS1/LS2/LS6/ LR4 Vortec 5300 LM7 L59 LM4 L33 4.8/5.3/5.7/6.0/ Engines
LS Rocker Arms have been disassembled and new Trunion Bearings have been professionally installed
New LS1 style bolts and 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 and are the same rockers we utilize on our 1,000 hp Turbo Motor. 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.
This kit includes:
- 16 LS Series Rocker Arms
- 16 rocker arm trunnions- LS-type retrofit
- 32 rocker arm bearings- LS-type retrofit
- 32 rocker arm retaining rings- LS-type retrofit
- 16 bolts for LS trunnion kit
- 2 GM Support Stands
Install the upgraded rocker arms to the cylinder heads using the new socket head cap screws supplied. Be sure to rotate the trunion so that the flat recess side of the trunion'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.
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Rocker arms
Great product exactly what was described perfect fit
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Definitely worth the money
Paired these rockers arms up with an stage 2 Drift Cam kit. One of the best combos on the market hands down.
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Awesome products
These rocker arm with trunion bearing upgrade that is pre-built are great. Saved me time not having to install the new trunion bearing kit and saved my motor from the oe rockers that were starting to get loose. The customer service from the sales team has been great as well with their help for my application.
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Great quality
New OE rocker that have a great finish and trunnions installed perfectly. Great to have piece of mind product
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Quality parts
Michigan Motorsports has out done themselves when it comes to GM ls rocker arms. Not only is the product quality top notch but there email an shipping response is one of the best. They have made a new customer for life.
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Rockers with upgraded trunions
So far so good got 600 miles on them
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Rockers w trunnion upgrade
Excellent quality. Well worth it.
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Trunnion upgrade
Very satisfied! High quality parts.
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Rocker arms
looks great, priced right and fast shipping
