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Wobble Under Hard Accel

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Old Jan 31, 2013 | 09:06 PM
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Default Wobble Under Hard Accel

I've had a moderate to sometimes non existant wobble in my 67 for a couple of years. (I know ). It feels as if a wheel is wobbling but it is not. The drive train on these cars has so many possibility's that I've really not been able to come up with a diagnosis. It appears when accelerating briskly and gets more pronounced if I'm on it hard. This winter I was going to pull it all apart but wound up finishing the basement instead! I really feel someone on the board has been where I am with this problem. All thoughts welcomed! Al W. BTW, at cruise all is well. No vibration at all.
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Old Jan 31, 2013 | 09:13 PM
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St. Jude Donor '09-'11-'12-'13-'14
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Trailing arm bushings.

AND/OR

Retaining clips worn out on stub axles allowing lateral movement of trailing arms.
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Old Feb 1, 2013 | 12:24 AM
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I have a very problem. New TA bushings, retaining clips. What else ya got?
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Old Feb 1, 2013 | 12:26 AM
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Originally Posted by Gary's '66
I have a very problem. New TA bushings, retaining clips. What else ya got?
I meant very SIMILAR problem.
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Old Feb 1, 2013 | 10:19 AM
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Originally Posted by 67vetteal
I've had a moderate to sometimes non existant wobble in my 67 for a couple of years. (I know ). It feels as if a wheel is wobbling but it is not. The drive train on these cars has so many possibility's that I've really not been able to come up with a diagnosis. It appears when accelerating briskly and gets more pronounced if I'm on it hard. This winter I was going to pull it all apart but wound up finishing the basement instead! I really feel someone on the board has been where I am with this problem. All thoughts welcomed! Al W. BTW, at cruise all is well. No vibration at all.
Could you be a little more specific? The car does what, exactly, under hard acceleration? A wobble to me sound like a loose wheel or a tire out of round or balance but I doubt that is what you meant.
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Old Feb 1, 2013 | 11:29 AM
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St. Jude Donor '09-'11-'12-'13-'14
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Originally Posted by Gary's '66
I have a very problem. New TA bushings, retaining clips. What else ya got?
How about a rotten frame?

Drive it over and we'll throw it on the rack and have a look. Only 100 miles.
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Old Feb 1, 2013 | 01:15 PM
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Originally Posted by Dan Hampton
Could you be a little more specific? The car does what, exactly, under hard acceleration? A wobble to me sound like a loose wheel or a tire out of round or balance but I doubt that is what you meant.
Hard to put it into words but I'll try. From the drivers seat it feels like it's coming from the right rear area of the car. If the Rim were bent it would produce the same feeling all the time. At cruise and light acceleration all is well. I really think it has something to do with the Torque of hard acceleration but where to look? Al W.
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Old Feb 1, 2013 | 01:18 PM
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Originally Posted by 67vetteal
Hard to put it into words but I'll try. From the drivers seat it feels like it's coming from the right rear area of the car. If the Rim were bent it would produce the same feeling all the time. At cruise and light acceleration all is well. I really think it has something to do with the Torque of hard acceleration but where to look? Al W.
Classic symptoms of either trailing arm pivot bushings shot, or the pivot bolt shim pack has come loose, or both.
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Old Feb 2, 2013 | 08:17 PM
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Originally Posted by JohnZ
Classic symptoms of either trailing arm pivot bushings shot, or the pivot bolt shim pack has come loose, or both.
Thanks to all who offered up some help/opinion! I'll report back when I pull it apart. Al W.
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