just as the title says i got a 86 f250 i put dana 60 in front its got the automatic 3 speed im not sure what trans and i think a 208 transfer case, well i burnt that trans out with the 44 inch tires now i can get a c6 and i hear there stronger but will my transfer case work? or do i need a 205?

 

A 3 speed automatic behind a big block in an '86 F250 would be the C6.

 

well that clears that up, i was just talking to a guy today with a 4 speed out of a 86 (manual) i told him i had a C6 and it was 3 speed he told me i had a 4 speed 4od somthing or the other. thanks for the fast response so all i need is a new c6, will the one out of a 1979 460 work?

 

The '79 C6 will bolt in as long as it was behind a 460 or 351/400M engine..I believe Fords did have a 4 speed overdrive auto behind 460s in the 90's but I'm not positive.It'll also accept the NP 208 and adapter.

 

thanks guys

 

They usually had the E4OD (4 speed auto) behind big blocks in the 90's for an automatic... but I believe up until around '96 you could still get a C6 behind a big block on the heavier trucks (F350s).

 

The only problem you might run into is the output shaft, 2WD is different from a 4WD. As for the E4OD, it's only 3" longer overall than a C6, but the mount pad is 7" further back. It also is computer controlled and won't work on an 86 460 unless you buy a standalone transmission controller.