contact pattern

mopar head said
The first time I tightned the yoke my wrench was set on 80 ft.lb.s
It did`nt even click yet and that jambed the pinion so tight I could`nt budge it by hand, so that`s when I backed it off to determine what nut torque was required to give me the 20 in.lb of drag for future refference/assembly.
If I was to go to 175- I`m thinking it`d take a 4' pipe wrench to turn that yoke.
Your saying adding shim, where? to do what?

Add shim(s) to the pinion bearing spacer to achieve 15-20 inch lbs of pinion bearing drag (with no seal installed) with the pinion nut torqued to 175 ft. lbs. What you did by trying to achieve 20 in lbs of drag by the tightness of the pinion nut won't work. The pinion nut needs to be real tight or it'll back off. I know you said you measured the old spacer that came out and tried to shoot for the same length but installing new bearings changed it and in addition it's extremely hard to measure it properly. I've tried and it'll get you in the ball park but you have to fine tune it with shims.