383 vibrations in motor HELP QUICK!!!!!!!!!!!
Thread Starter
Staging Lane
Joined: Oct 2006
Posts: 59
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383 vibrations in motor HELP QUICK!!!!!!!!!!! just built new 383 having a problem in the bottom end i think. used stock windage tray and stock oil pan on the windage tray rod bolts jst touched the tray didnt think it would be a problem car runs sik as hell 2nd gear burners into 3rd but like i said have a engine vibration if anybody ever had this problem please let me kno or what ya think could be wrong.THANKS
LT1s from the factory are internally balanced in the front and externally balanced in the back. That means the stock flywheel/flexplate has a weight on it to balance the crank. Your 383 crank is most likely internally balanced. You need to get this fixed. Just take the flywheel to a machine shop and have it zero balanced.
Originally Posted by robby73z28
not sure what that means first time messn wit the lt1 its a 6 speed used everythng from old motor
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