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Old 09-13-2017, 12:51 PM   #26
toolboxchev
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Join Date: Jul 2015
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Re: Any idea on what this knocking is 72 C20 350

Or you can use a paint pen on the pushrods after a slight clean with degreaser to ensure you lifters are working.

With each move of the lifter you should see the pushrod spin.
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