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Originally Posted by BMERDOC
Well I hope it does help and he can get it straight for you! 
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. |
Interesting. I did both but don't have #'s yet as it is still a frame on the ground and the body is around the corner. 1973 HD disc front end. Those lowers were tough.