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Hot Rod
|March 2021
Build Fail-Safe LS Rocker Arms With This Needle Bearing Upgrade Kit.
High mileage or a high-performance camshaft swap: Those are the top two reported reasons for LS rocker-arm failure.
The symptoms are a miss with a ticking sound coming from the valve cover or needle bearings in the motor oil, or both. The problem is caused by uncaged bearings that spill out of the side of the arm when they fail from wear, or when the lift of the new cam exceeds the design of the bearing cap, pushing it out of the rocker-arm body.
Rather than risk this on our LS3, we installed an LS rocker-arm bearing upgrade kit from Summit Racing Equipment that replaces the factory bearing and trunnions and adds the safety of snap rings to keep it all in place.
Sources
OEM Tools; 888.453.5148; toolsid.com
Summit Racing; 800.230.3030; summitracing.com
This story is from the March 2021 edition of Hot Rod.
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