Differential swap ?
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Joined: April 26, 2005
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Just had an Eaton LSD and FRPP 4.10 gear installed, and I'm noticing a fair amount of vibration 
- believed to be from the driveshaft. Vibration increases as speed increases. So really noticeable at 70 and above.
The car does pull harder and I don't think that I'm getting any greater drag on the engine.
Any ideas?? Is this to be expected? Should I just rotate the driveshaft and pray that will fix my issue (or at least lessen the vibration)?
Thank you for any feedback.
- believed to be from the driveshaft. Vibration increases as speed increases. So really noticeable at 70 and above.The car does pull harder and I don't think that I'm getting any greater drag on the engine.
Any ideas?? Is this to be expected? Should I just rotate the driveshaft and pray that will fix my issue (or at least lessen the vibration)?
Thank you for any feedback.
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If the pinion nut was not tightened properly to get the correct preload on the pinion bearings there will be vibration. If this is the cause, your gearset is probably trashed. I had to use a 4 foot long breaker bar to get the correct preload on mine.
I think George's and Paul's advice together are the ticket.
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