LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Bad vibrations at 3000-4000rpms.

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Old Aug 22, 2003 | 04:59 PM
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drewstealth's Avatar
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From: Fairfield, ca
Bad vibrations at 3000-4000rpms.

Mostly only in 3rd gear is when i notice it the most. It vibrates from about 3000 to a little over 4000 rpms. What do you think this could be? I was thinking maybe my driveshaft. But then wouldn't be like this all the time? Also i have a poly tranny mount, do you that could be why?
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