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Thread: ZZ383 knocking
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Old 06-26-2009, 03:44 PM
fivewindowcoupe fivewindowcoupe is offline
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actually the GM manual states "to about 5000 RPM". So I figured I was close enough. It would be great if all it was was a valve adjustment and I'll check that but wouldn't you here that through the valve cover with the stethescope? It has roller lifters so I doubt it would be a worn cam lobe. It's not loud and it does not seem to be getting worse, loud enough to be annoying.

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