Alright found some info on our 4L30E transmission:
"Used 1990-up.
There are MANY versions and are used in the Cadillac Catera as well many Foreign vehicles and Postal trucks.
This is a computer controlled overdrive transmission.
Rear cooler line is the cooler return line.
Band adjustments:
Intermediate = not used
Reverse = 5 turns
Optional Gear Ratios:
2.86:1 1st gear
1.62:1 2nd gear
1.00:1 3rd gear
0.723:1 4th gear
2.00:1 reverse"
We have the Borg Warner 4422 transfer case:
http://cobratransmission.blogspot.co...-isuzu-wg.html