I have a 1967 Chevelle and am wondering how you go about centering the rear end under the car? I have adjustable upper arms (Hotchkis) but don't see how that would do it. Am I missing something? I believe all year Chevelles use the same suspension design, correct?
I've got new 17x8 and 17x10 Intro Twisted Vista's on order and want to make sure the rearend is dead center.
Dennis

I have done two rearend swaps on my chevelles and they were done the easy way and the hard way.
The hard way was by using a 3-ton jack and I balanced the carrier on the jack and slid it under the car. Once it was under the car I immediately aligned the upper control arms with the bushings that were in the carrier. i then jacked it up more and bumped the rearend over until the bottom arms were lined up. The next step was to put the bolts into the holes to secure it from dropping down unexpectedly. I used original boxed control arms and stock uppers so I do not know exactly if aftermarket arms align as easily as the stock style.
The easy way was when I was at a friend's trans shop and had the car on a lift. I used two adjustable stands and lifted the rear to loosen all the brakes and bolts. I then began lowering the rear down from the car and removed the springs and unbolted the shocks. The rest was pretty much self explanatory. The install was basically the reverse of the removal. I didn't encounter a problem with centering the rearend. The rearend should align up once the 4 control arms are bolted to the carrier.

I hope this helps with your problem.

Since you mentioned the tires/wheels, you must be after equal wheel clearance side-to-side. I believe this has very little to do with your rearend and control arm installation. As always, tighten all bushing bolts with weight on the wheels. On most set-ups, there is no side-to-side adjustment possible.

But, you may need to center the body on the frame( the rearend is probably already centered on the frame) Loosen the body bushings up and down the side of the frame rails as well as the one near the radiator mount and behind the rear seat. It is not uncommon to find 1/2"+ more clearance on one side than the other. Then, you and a friend can slide (push) the body to the side to equal out the clearance.

If once side measures 1/2" more than the other, than move body 1/4", etc. This is a must to fit the big meats within the wheelwells, nobody gives up 1/4" for free!

jlaf