Difference between manual and automatic transfer case

231c transfer case
231 amc vs 231j
are all np231 transfer cases the same
np231 fluid capacitynp231 transfer case ratio
np transfer case
231j transfer case fluid
jeep transfer case interchange

It's posted on the board with a schematic if you're interested. Manual t-cases without slip yokes are relatively rare. Most are the older type with slip yokes