- Joined
- Feb 23, 2011
- Messages
- 128
- Vehicle Year
- 1991
- Engine
- 4.0 V6
- Transmission
- Automatic
I picked up a Zf transmission the other day. The ID plate says its a 42 but the cast number on the case is 1317 which indicates its the stronger 47. I guess the question is are their any other identifying factors that are different between the 42 and the 47?


