Smith Brothers LS / LT (Gen 5) Bronze Trunnion Upgrade Kit
$203.00
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- Smith Brothers LS / LT (Gen 5) Bronze Bushing Trunnion Upgrade Kit.
- Fits all OEM LS & LT (Gen 5) Rocker Arms.
- Replacement Trunnion Kit for LS / LT (Gen 5) Engines
In Stock
Frequently Purchased Together
Camshafts & Valvetrain
Brian Tooley Racing – .660″ Lift Platinum Valve Spring Kit for LSx Engines (SK001)
Camshafts & Valvetrain
GPI – 5/16″ Hardened Pushrods for LS1 / LS2 / LS6 / L92 / LS3 / L99
Description
LS & LT (Gen 5) Engine Trunnion Upgrade Kit by Smith Brothers is a great replacement kit to have in your LS or LT (Gen 5).
Hundreds of needle bearings are used in the stock rockers. Any failure will let one of those bearings tear through your engine. Replace those needle bearings with bronze bushings and prevent a catastrophic failure.
Includes:
– 16 Micro-polished hardened shafts
– 32 C932 bearing bronze bushings
Features:
– Loads are spread over a wider area – less prone to failure
– Rocker arm stays lubricated due to oiled channels
– No small parts to come loose and damage your engine!
Questions & Answers (6)
Customer questions & answers
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Are these good for high rpm
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A Relative to what you call "high" rpm but I would use this up to 7k
Will this fit a LMG or LC9?
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A Yes
I have a Chevy 2018 L83. Will these replace my stock using the stock rockers and provide better quality and longevity?
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Q I have a Chevy 2018 L83. Will these replace my stock using the stock rockers and provide better q...... Read more answer nowAsked by on September 4, 2025 6:22 pmA Yes
how many snap rings does this kit come with ?
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A Should come with a full set, maybe even an extra in case you lose one
Does this kit come with new rocker arm bolts?
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A No it does not
What's the max lift on these (LS7). Is it higher than the CHE limit of .650 lift?
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Q What's the max lift on these (LS7). Is it higher than the CHE limit of .650 lift? answer nowAsked by on January 25, 2020 10:50 amAnswered by the admin
The problem on the LS7 is not with the trunion going over .650 lift. They spin 360 degrees. The problem with 1.8 rockers is it will move the tip of the rocker arm off the side of the valve stem with the higher lift. It creates a lot of sidle load pressure on the valve and guide. It causes excessive wear and eventually valve failure.
upgrade for sure
Fast shipping and quality parts. Gpi #1
Great product
High quality works great!
Haven’t swapped out yet. Look very nice.