you'll have to grind down the splines on the t-case, since instead of having a relief area on later cases, the 4 speeds had raised splines past where they really matter
I have a 1980 4wd with L43. I am installing a L52 and would prefer to use the transfer case out of my 80 as I know its condition. The spline on the 80 does not taper like the 83 does. Do I need to do anything to those splines on the 80 transfer case? If so can I just pull the input gear out of the 83 case and install in the 80 case? Thank you in advance! Michael
