Can someone tell me the tranny code on this gear calculator I need to use for my 1991 cruiser with auto and 3fe. I'm not sure which tranny and Tcase I have by the codes they are using. Basically I want to turn 3000 rpm at 75 and I need to know what gears to slap in the pumpkins to make that happen. BTW I will be running 31 inch tires. Here is the calculator
http://www.dfw-tx4wd.org/Tech-Dept/Tech-Dept/gears.html
http://www.dfw-tx4wd.org/Tech-Dept/Tech-Dept/gears.html