I was really wanting the step by step rebuild instructions and pics that used to be in that that thread.....
This came from that other major forum site, which all came from the Marlin transfer case bible originally.
1979-1980 20R Carb Top Shift 21-spline
1981-1983 22R Carb Top Shift 21-spline
1984-1988 22R Carb Forward Shift 21-spline
1985-1988 22RE EFI Top Shift 21-spline
1986-1987 22RTE EFI/Turbo Forward Shift 23-spline
1989-1995 22RE EFI Forward Shift 21-spline
89-95 22RE(G58) forward shift chain drive transfercase 26-spline will not accept adapters or gear sets. These are 22RE/4X4 Models with 5 spd and ADD.
Year Model Application Model Speeds Splines 1st Gear Engine Transfer Case
1979-1980 Carb L43 4sp 21 spline 3.67 4cyl 20R Gear driven Top Shift
1981-1983 Carb L45 4sp 21 spline 3.93 4cyl 22R Gear driven Top Shift
1981-1983 Carb L50 & L52 5sp 21 spline 3.93 4cyl 22R Gear driven Top Shift
1984-1986 Carb G52 5sp 21 spline 3.93 4cyl 22R Gear driven Forward Shift
1986-1988 Carb G54 5sp 21 spline 3.93 4cyl 22R Gear driven Forward Shift
1986-1987 EFITurbo R151F 5sp 23 spline 4.31 4cyl 22RTE Gear driven Forward Shift
1985-1988 EFI W56 5sp 21 spline 3.95 4cyl 22R Gear driven Top Shift
1988-1991 EFI R150F 5sp 23 spline 3.83 V6 3.0L Chain driven Forward Shift
1989-1995 EFI W56 5sp 21 spline 3.95 4cyl 22R Gear driven Forward Shift
1989-1995 EFI/ADD G58 5sp 26 spline 3.93 4cyl 22R Chain driven Forward Shift
1996-2002 EFI W59 5sp 23 spline 3.95 4cyl 2.7L Chain driven Top Shift
1996-2002 EFI R150F 5sp 23 spline 3.83 V6 3.4L Chain driven Forward Shift