bruceb58
Supreme Mariner
- Joined
- Mar 5, 2006
- Messages
- 30,733
In the half tons they are. GM and Ford developed their own 10 speeds in the 3/4T and up although they started with the half ton designs and they went in different directions on the heavy duty transmissions.The 10 speed transmissions in the Ford and GM are sister transmissions from the same Ford/GM JV





