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72_swb · 09-12-2017, 03:46 PM

Sounds like a lifter sticking? Because it's intermittent. Has the motor been sitting up for awhile. Also make sure nothing is hitting the flywheel

09-12-2017, 03:46 PM	#7
72_swb Registered User Join Date: Feb 2014 Location: dallas area Posts: 221	Re: Any idea on what this knocking is 72 C20 350 Sounds like a lifter sticking? Because it's intermittent. Has the motor been sitting up for awhile. Also make sure nothing is hitting the flywheel __________________ 69 build http://67-72chevytrucks.com/vboard/s...d.php?t=727311