I'm 2.5 years into a frameoff restoration.  Today I took my 72 convertible in to have the car aligned.  Both front and rear.  I was told the car had been wrecked and the repair was not good.  My right front tire is out 3 degrees (I believe that's what he said) out, even after shims had taken the nut out to the end of the bolt.  My alignment guy would not recommend placing a longer bolt in the top control arm to bring the tire (moving the top of my tire inward) into alignment.  Said he wasn't sure it would be safe using that long of bolt.

The frame can get bent out of shape, for sure. Could be from a wreck, or even some hard driving.
I have heard of, and seen, some "off-set" upper control arm shafts, that would allow more camber adjustments for the top. Can't remember where I've seen them advertised, but they are out there. Might be something from Vette Brakes(VBP), but I'm just not sure. A search might find more info...
Adams' Apple2010-08-28 08:24:33

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Joel Adams
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Assuming you trust this alignment guy, how did he do the alignment.  I've had shops tell me the same but the guy that the older vettes use (Mark @ Modern Wheel) uses the old stick method.  Takes him forever but it handles like a dream when he is through.

When I rebuilt my front suspension I ran into the same thing. The guy doing the alignment said that he has seen this issue from time to time on the old vetts. He said it was from age and use. He said frame shops can bend them back into shape or go with the offset upper control arm shaft. I went with the offset upper control arm shaft. Corvette Central has them #572016

thanks eveyone.  The offset upper control arm shaft sound like a winner and I have thought of some other mods.  Feel a lot better.  David