Product Description
Michigan Motorsports LS Rocker Arm Trunnion Upgrade Kit
Used on all LS style rocker arms including the following: LS1, LS2, LS3, LS6, L99, LS4, LS9, LSA, LQ4, LQ9, L76, L92, LR4, LM7, L59, LM4, L33, L98, L77, LY6, LFA, LZ1, LY2, L20, LMF, LH6, LY5, LMG, LC9, LH8, LS4, 4.8L, 5.3L, 5.7L, 6.0L, 6.2L.
NOTE: LS7 7.0 should order part number 55200
These LS Series retrofit trunion kits are designed to convert stock LS Series rocker arms into captured roller bearing rocker arms. The factory bearings are a known failure on the LS Engines. When they fail they send small bearings through the entire engine. The upgraded trunions use a captured roller bearing allowing for a reliable smooth rotation. The upgraded trunions also give more stability at higher RPM. We use these trunion kits in anything from stock 4.8's all they way up to 1,000+hp turbo motors. The stock factory LS rocker arms are very strong and very light. Once you upgrade the bearings and trunions the rocker arms handle similar to very expensive roller rocker arms (at a fraction of the cost). These are a must have for anyone installing a aftermarket Cam, Supercharger, Turbo or Nitrous. Need multiple sets? Inquire about buying in bulk at a discount.
The kit includes the rocker arm trunions, rocker arm bearings, and rocker arm retaining rings and upgraded bolts for a complete installation. The bolts we supply are slightly shorter than factory bolts so they do not protrude into the intake ports. Bolts are stronger than a grade 8 bolt with a minimum tensile strength of 170,000 psi.
Included in this kit:
- 16 rocker arm trunions
- 32 rocker arm bearings
- 33 rocker arm retaining rings
- 16 upgraded bolts
- 2 washers for pressing bearings
Installation is fairly simple with the use of a press or a simple vise along with basic hand tools. Instructions are included to aid in the installation.
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Well built
Product is well built and well written instructions are included thats a big plus for me everything goes in smooth no issues smooth rotation as well and no issues with the snap rings
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Looks great
Looks great and you can tell it's a hole lot better then stock and really easy to do, everyone should do this if they are doing a cam swap for sure just for a Peace of mind
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Works great I love this kit I wish I could also get the trunnion upgrade as well but I just order it separately
Needs to have the trunnion upgrade as well
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Trunnion upgrade
Way better than factory
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LS ROCKER ARM TRUNION KIT - LS1 LS2 LS6 LS3 4.8 5.3 5.7 6.0
Great product. assembled beautifully!
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Ls trunion kit
Nice kit and great service!!!!!
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It's a good upgrade from stock.
