will a 6.0 Diesel ZF750 6 Speed 4WD fit a 6.9 idi

[Alex cook]

i have a 1984 6.9 i put a new head gasket on it now it runs really good but the c6 transmission blew and i want a better option would the zf750 6 speed fit?

 

[Philip1]

From what I understand the 6.9, 7.3 and 7.3 powerstroke used the same bellhousing but the 6.0 is different. Also the zf6 is not directly compatible with a zf5 (or other older transmissions) due to different bellhousing depths.

 

[IDIBRONCO]

Also the zf6 is not directly compatible with a zf5 (or other older transmissions) due to different bellhousing depths.

I feel that it's not worth the effort unless you really want to do this swap. The top gear is still basically the same ratio as the ZF5, it's just that the ZF6 has a much lower 1ST gear.