I sold a second generation Camaro disc brake set up to another Chevelle guy here in town. They installed it using off-set shafts. The odd thing is to align it, they needed to install the shafts to push the top of the tire outwards from the car. And with no shims, the top of the tire still leans in too far and is wearing tires.
I know what the responses will be, but they need to see it coming from someone else (that'd be you :D ).
What does this car need to get the top of the tires out farther to align it after a tall spindle conversion? They didn't have tire wear before the converison.

My last tall spindle conversion has the same problem, and boy could I really tear into the conversion here but I won't. You can send the vehicle to a frame shop and have the car's frame tweeked (read bent) to give you correct camber, or the better choice is to return to the correct spindles with disc brake, and sell all the tall spindle crap to someone who dosen't know better.

The cuase is due to sag in the crossmember from the age of the car. I have experienced this with several old cars. The cure is easy, take it to a shop that has dealt with the problem before if they have a blank look on thier face when you ask about it go somewhere else. They will basicly chain down the outer ends of the crossmember and jack it up in the middle. The cars I had done were a 62 Impala, a 68 BB Chevelle and a 60 Olds 98. All had the STOCK suspension components.

Is the tire wearing on the inside? What is the camber at? If too much neg camber and no shims between the frame and the cross shaft the frame will need to be spread out. I have done it with the engine out of the car with a port-a-power. I also determined how much to spread the frame before removing the engine. If you do not add some sort of reinforcement to the crossmember the frame will sag again with time. If the camber is ok and the insides of the tires are wearing that would be from the toe out bumpsteer.

Yep, frame sag... pretty common and I had the exact same problem. Costs around $250 to have frame 'rolled' back into place plus a little extra!

Slo307,
You mentioned reinforcing the crossmember... is that something you have done in the past? I've looked at trying to do that, but really haven't come up with a good solution. If you've done it, how did it turn out? I've got a big-block in my 71 and can only imagine that once it has sagged, it will tend to sag easier over time and keep getting worse.

Thanks,
Bill C.

Yes I have welded in 1/4" gussets on the front and rear side of the crossmember to the frame rail. I made cardboard templets and cut them out and mig welded them in. They kind of resembled elephant ears. I did this on two different drag cars, 67 & 69 Camaros. They were able to lift the front wheels. With the reinforcements in place on my buddies car. I was able to keep track of up untill about 3 years ago when he sold it. It had not bent the crossmember again.