Retro LS Build: Rocker Arm Trunion Upgrade

Original article, by Mike Mavrigian, reprinted with permission.

If you’re gonna pound on an LS engine that features OE rocker arms, you need to perform this simple aftermarket trunion/bearing upgrade!

In the process of building any LS engine, if you plan to use OE rocker arms (whether re-using originals or using new OE rockers), you should be aware of the critical need to perform an upgrade to the rocker arms. Specifically, the OE trunions and trunion bearings should be replaced with an aftermarket upgrade kit. (more…)

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