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Rear vibration 71 refurb

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Old Feb 15, 2011 | 05:25 PM
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Default Rear vibration 71 refurb

Redid the whole car back a few years and when approaching 60 to 70 mph the back end virates. thought it was my old tires from 1980 and replaced them but did not resolve. Moved the original rally wheels around and that did nothing...............

I replaced ny original 3.36 rear end with a 3.55 out of a vette from the 80's...............could this possibly cause vibration at highway speeds?

Any suggestions to resolve would be appreciated.
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Old Feb 15, 2011 | 05:37 PM
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Does the car seem to Pull in one direction when you have the gas pedle to the floor ????

I'm thinking trailing arm bushings...

Bob G.
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Old Feb 15, 2011 | 06:57 PM
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Originally Posted by 24695bob
Does the car seem to Pull in one direction when you have the gas pedle to the floor ????

I'm thinking trailing arm bushings...

Bob G.
no it does not, i replaced all the bushings when i rebuilt the suspension.
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Old Feb 16, 2011 | 12:05 PM
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Default 71 or 80?

Is this a 71 or 80 Corvette?
The 1980-82 rear end does not fit in a 68-79 Vette.
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Old Feb 16, 2011 | 12:17 PM
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Originally Posted by jaki30
Is this a 71 or 80 Corvette?
The 1980-82 rear end does not fit in a 68-79 Vette.
My car is a 71 but the differential I was told was from a 1980 but could have been from a late 78 or 79. It fits though.
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Old Feb 16, 2011 | 12:27 PM
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read this thread on transmission to differential alignment.http://forums.corvetteforum.com/c3-t...aft-angle.html
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Old Feb 16, 2011 | 12:44 PM
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Hey thanks for the link............after reading this I had installed a rear stabilizer bar which it never had and also a new composite spring which tends to increase the height of the rear. It maybe possible the angle of the shaft is now too much. I will check this out once i figure out how to check the angle degree.
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