Aug 4, 2008 #1 M MARQ2277 Full Access Member Joined May 28, 2008 Posts 206 Reaction score 0 Location caldwell, idaho which auto trans did the 1987 F250 6.9 idi have?? Marq
Aug 4, 2008 #2 h2odrx Anti-O Joined Dec 11, 2005 Posts 4,835 Reaction score 3 Location Coastal Neckville, NC Mine has a C-6
Aug 4, 2008 #3 Mr_Roboto Full Access Member Joined Dec 23, 2005 Posts 1,721 Reaction score 6 Location Elyria, near Cleveland Ohio C6 was the only automatic available with the diesel until 1989 when the E4OD was introduced.