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Old 09-13-2017, 05:56 PM   #31
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Join Date: May 2016
Location: Green Bay Wisconsin
Posts: 71
Re: Any idea on what this knocking is 72 C20 350

Sorry yes it's a SM 465. Well I took the last two rocker arms off like you said earlier to compare them and they both look identical. No issues there.
Not sure what else to really do. I guess the engine is gonna have to get pulled.

Last edited by Chilly178; 09-13-2017 at 06:22 PM.
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