Poly Motor Vibe

Hi, I have posted this last year and have been checking for the vibration but it is still present and seemingly getting worse. 1965 Fury poly 318, 120k miles ,all stock, we replaced water pump, timing gears and chain with double roller in 2022.timing chain was tight on left side, but sloppy loose on the right side as you look at it. vibration started right after that replaced with new vibration dampener seemed to get better but now has become very significant between 14 and 1800 RPMs. seems...

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Author: 65GUS