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Old 09-12-2017, 05:42 PM   #14
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Join Date: May 2016
Location: Green Bay Wisconsin
Posts: 88
Re: Any idea on what this knocking is 72 C20 350

Thanks for all the input! I ran the engine a bit more to give you guys a better idea.

And then I also ran it again with the passenger side valve cover off.

I'll check the flywheel sometime tomorrow.

Last edited by Chilly178; 09-13-2017 at 08:47 PM.
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