I finally got back to work on my '81 J20/10 project. Got the NP 208 in after realizing I built the wrong TC because the T-18 has a different spline count. DOAH! That was a moment of ...reality. Still had the other 208 so I disassembled and reassembled and am now good to go.
I know there have been threads about this stuff but I'm lousy with the search bar and I'm not doing something right to find the info.
I know doodley squat about transmission, and front and rear axle clocking. I know the axles should have similar angles but I'm not sure what the angles should be or how much tolerance wiggle room there is.
This rig has the J20 Dana 44 up front and Dana 60 in the back with the T-18 and NP208. Skyjacker 4" lift springs all the way around. Front drive shaft is good but not a lot of clearance on the transmission cross member (roughly an 1"). Is that enough?
I'll have to have the rear shaft cut and shortened but don't know how to measure properly for THAT and I'd like to avoid the banghead emoji again. I've got the J10 and J20 rear shafts and imagine I should use the J20 drive shaft unless there's some physics thing I'm unaware of.
I travel for a living and I'm heading out for a couple weeks. That puts me in research mode which is why I'm asking. I can gather knowledge and order parts and tools and such and dive in when I get home.