LS1 Valve adjustment Procedure????
Or are you just guessing?
If they keep coming loose, try putting some blue loctite (medium strength) on the threads of the bolts that hold the rockers down.
Torque them to 22 lbs. Crank the engine over by hand a few times, then re-torque them all again. you should be good to go.
The ls1 stock rockers are non-adjustable.
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Curious, was it pinging before the rebuild? What was the cause of the cracked piston?
What plugs are you running now? I think TR6's would be best for that setup.

