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Driveline Vibration Help

kcc0521

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After doing my autoswap my car has a very minor vibration at 65MPH and above. I am not hearing any noise from the rear. I think it may be related to something below. What do you think?

1. In correct pinion bearing preload because I swapped the differential yoke without changing crush sleeve.
2. In correct driveshaft orientation. Since it was a new transmission and yoke I didn't have reference marks from where I pulled it apart
3. Transmission mount slightly offcenter. I read something about this in the ford manual.
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Dominant1

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kcc0521

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Thanks. I am hope it is a driveshaft issue not a messed up pinion bearing preload.
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