1983 dodge 1 ton truck transmission

All 727s had the standard 2.45 low gear set. The 904s got a 2.74 somewhere around 1980. Chrysler did have different "duty" levels, including a "Loadflite" and some truck applications had a short tailshaft.

You should find more detailed info by Googling "torqueflite history". Lots of reading to do.