Thread: 68 Vibration
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Old 04-05-2008, 07:01 AM   #1
Blue68Coupe
68 Coupe 289
 
Join Date: Apr 2005
Location: North carolina
Posts: 44
Question 68 Vibration

My 68 coupe 289 C4 Auto has had a vibration that goes through it like a wave since I had the tranny rebuild about a year and a half ago. It speeds up with the engine and not so much with the speed of the car. I had the rearend rebuild, new motor mounts and new Ujoints but still have the problem.

I noticed that when I replaced the Ujoints that the output shaft on the C4 was movable. Is that right I could grab it and wiggle it around. I was wondering if that might be the problem and if so how do I fix it? The tranny is now out of warranty and I don't think I would take it back there anyway.

My next step is probably the transmission mount. It doesn't look bad but who knows.

Thank for the help.
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