C6 Tail Piece.. 2WD vs. 4WD

m000996 · #1 (**permalink**) 05-07-2008, 11:12 PM

I'm swapping C6 transmissions in my '75 F250 4x4. I have found a cheap, usable C6 tranny, but it is out of a '79 F250 2WD. Obviously, the tail pieces are different on the 2WD vs. 4WD transmissions. Can I replace the long tail piece on the '79 2WD C6 with the shorter tail piece from my '75 4WD? I want to keep the tail piece because it is the mounting point for my transfer case linkage back to my divorced NP203. Thanks for the help, Mike

385seriesHemi · #2 (**permalink**) 05-08-2008, 08:06 AM

I would believe you could BUT you will be having to change the output shaft also.

mark a. · #3 (**permalink**) 05-08-2008, 11:37 PM

You have to tear the trans completely down, there is no way out. The tail shaft has to be changed over & it has to come completely apart to do that, so you might as well rebuild what you have.

m000996 · #4 (**permalink**) 05-09-2008, 08:43 AM

Thanks for the responses.. I plan on tearing down the 2WD transmission anyway to rebuild it. The driving force behind this effort is a motor swap from a 360FE (big block C6 bellhousing) to a 300-6 (small block C6 bellhousing). The 2WD C6 is part of a 300-6/C6 combo that I'm getting from a '79 F250 2WD.