I Found the Magic Button!

[BMERDOC]

Originally Posted by MusicMan70

Thanks, Sure wish I had this for reference when I took mine's in for alignment. I had just rebuilt the front end and it took me two trips before the guy got it right. This should help.

Well I hope it does help and he can get it straight for you!

Originally Posted by jjzepplin

"Castor MOD"? Is that where you switch the upper control arms and move the lowers forward?

I tested switching the uppers and it gives waay too much Caster (13° to 14°). So swapping the uppers is a dream and doesn't work but you are correct about moving the lower arms forward. You would redrill for the locating pin 3/4" forward to come up with 6° to 7° of caster. I will be drilling mine at both 1/2" and 3/4" to see what the difference is. The only problem with dialing in caster this way is that it tilts the steering arm up and back and messes with bump steer so I will be testing to see what effect both 3/4" and 1/2" have on both caster and bumpsteer.