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I have a 1994 EB, now with 139,000 miles on it. It runs great, but it seems to wander quite a bit, and when I hit a large bump on the passenger side, it becomes unstable at speeds around 60 mph. I have replaced the front rotors, calipers, pads (due to other brake problems) and bled the system. I have also installed a set of Edelbrock Performer IAS shock all around (four in the front). I have a set of Energy Suspension bushings to install, as I see some of the bushings are wearing out, especially the radius arm bushings.
The tire shop says I need a camber adjustment. Anyone had this done before? I am not sure of what is involved, but I don't think I have the tools to do this. Any other ideas or experiences?
Be ready for them to tell you that you need ball joints! The camber is adjusted by adding or removing shims at the upper or lower ball joints, I believe. There are a number of posts on this subject (replacing the ball joints), so you may check them out. It's a pricey proposition for a shop ($600 - $800) for both upper and lower, and it can be done in your garage, but it's not for the faint-hearted. (My knuckles are still healing from doing mine three weeks ago!). Before checking this out, though, you may also check out your radius arm bushings (where the radius arms trailing off of the front suspension tie into brackets riveted to the truck's frame). Another area I'd look would be the axle pivot bushing, where the two "halves" of the front axle meet and are attached to the front crossmember. The Energy suspension kit is a good choice..... polyurethane is the only way to go!
Check your TTB pivot bushings as well. With that many miles, they're probably gone. They have a huge impact on camber, so camber out of adjustment is a big hint that they're bad. You should be able to check them by pushing up on the inner ends of the arms with a jack of some sort. If you see any movement, it's time to dig deeper.
the camber is adjusted with shimes between the upper inners and the frame. add for positive, and take out for negative camber. some front end shops even bend the axles to align, but you need to take it to a shop because they need to hang gages on the wheels to align the camber good luck,