Caster Mod for pre 73

[hewittca]

Originally Posted by SuperDuperDoughnuts

So I'll be rebuilding my suspension this weekend and I wanted to do this...

Bought bunch of new parts including new lower control arm shafts (Moog K6147). The new shafts have only a single locating hole--not two--that is 1.25" from the shoulder. The only other person (The Rocknrod) I see who had a single hole, says his were originally at 1.75".

I don't have power steering so I'm not trying to get to 6°+ degrees of caster, just ~4°. Basically confused at what I should drill at to hit my target.

That's interesting that your original hole is in a different spot than what has been previously reported. I would compare that new shaft to the one you take out and go from there. If it's in the same spot as your old shaft, just base your new hole location on that. If the new shaft is different than your original, then maybe they drilled it in the wrong spot? With it being at 1.25 (vs 1.75) that would put the arm in the opposite direction of what you want for this caster mod, so you'd have a really poor handling truck!