The automatic transmission behind the Cummins engine in a Ram 2500 is a Chrysler transmission. Depending on the year it could be a 47rh, 47re, 48re, or a 68rfe.
1989 was the first year of the Cummins.
1989
Dodge started using the 5.9L Cummins engine in the 1989 model year.
Not the F250, F350, etc. Dodge and Cummins just signed a multi year contract to keep the Cummins in the Dodge trucks.
Not for the 2013 model year.
gm bought allison in 1987
No, the common rail fuel system started on the 2003 model year Dodge.
Depends on what type of fluid you have in your transmission. If it has Allison's transynd in it, I would typically change the spin on filter once a year, then send an oil sample in to Allison through an authorized Allison transmission dealer. The results of the oil analysis will tell you if the oil needs to be changed, as well as if you have any kind of wear materials from any kind of problems developing inside your transmission.
2000
Anywhere from 170-350 hp depending on the year.
The cummins went 24 valve in model year 1998.5