Generation IV Internal Engine 2005-2014 LS2 | LS3 | LS7 | L92 | LS9

Snapped rocker bolt

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lep
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Default Snapped rocker bolt

New LS3 with 600 miles on it. TSP stage 2, TSP double valve springs, retainers, polished galleys via CNC. I installed the cam and Comp trunnion kit and used OEM bolts if the Comp bolt bottomed out. So there’s a mix of OEM and Comp bolts. Also used plenty of Lucas green assembly lube everywhere.

Noticed clacking sound a few days ago at idle for 20 seconds, then went away, and was dismissed as lifter bleeding. Today after startup clacking didn’t go away, so I pulled the valve cover on that side.

Noticed a rocker sitting on its side with the upper half of the OEM bolt still inside it, and 1/8”’of the snapped off shank sticking out of the head. I’m going to grab the head with vice grips and take it out - only 22 ft-lbs so should come out. I also have plenty of OEM and Comp bolts.

Question: I can remove the entire set of rockers from that head using an air wrench with stress on valves, correct? It’s only putting them in and torquing each pair of exh & intake when each cylinder needs to be TDC, correct? (Obviously anything pulled needs to kept in order — bolts and rockers. I can leave push rods in).








Last edited by lep; Today at 05:10 PM.
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