4spd to C6 help!!!

parsons913 · Oct 1, 2007

:wacko: I've got my motor about where I want it now, but my trans just won't let me shift fast enough to play with all my buddies and their diesels. I want to swap for a C6 (it's a 4spd now). I was wondering if I can use a regular C6 just change the tail housing or do I need a 4x4 specific trans? Also will my transfer case bolt up or will I be moving it all around? I would like to keep it 4 wheel drive so I can launch harder. It's a 460. I've pulled trannies before and swapped auto for manual in a fox body mustang but that was straight bolt on stuff. Any insite will be greatly appreciated.

randy270@hotmail.com · Oct 9, 2007

BP460 said:
:wacko: I've got my motor about where I want it now, but my trans just won't let me shift fast enough to play with all my buddies and their diesels. I want to swap for a C6 (it's a 4spd now). I was wondering if I can use a regular C6 just change the tail housing or do I need a 4x4 specific trans? Also will my transfer case bolt up or will I be moving it all around? I would like to keep it 4 wheel drive so I can launch harder. It's a 460. I've pulled trannies before and swapped auto for manual in a fox body mustang but that was straight bolt on stuff. Any insite will be greatly appreciated.

I just got done replacing my C6 for a 4-speed I found a donor truck so I don't know if you can convert a 2-wheel C6 to a 4-wheel or not. I have herd rumours that the transfer cases have different splines so I'm not sure there ether. But i do know that your transfer case will sit about 3 1/2" back compered to the 4-speed. My truck had all the holes in the frame so no drilling but I did have to change out the drive lines. By the way what year is your truck? Mine is a 78.

66aqua · Oct 11, 2007

if the c6 was offered from the factory in that year truck, then you should be able to use the correct tail housing and shaft for the tranny/transfercase. btw how bout using a t5 or other mustang manual tranny w/ a divorced tcase? that would be great shifting and 4x4 also. a 205 out of a 70's f250 or 350 would do. w/ some 4.10s and have fun.

parsons913 · Oct 12, 2007

Thanks for the info. My truck is a 1986. I've been looking for a donor truck, but all I find are small block trucks. I'm looking for the quick smooth shifting of a t5 or similar tranny, but my experience with a t5 in a mustang with minor bolt ons was not good. I don't think the t5 would hold up ( not with the way I drive anyway). I'm wondering if a rebuild of my 4spd would help out any? Thanks again for your input.

66aqua · Oct 12, 2007

you wont be able to shift a truck 4 spd. as fast as a car 4spd. how about finding a toploader out of an older mustang or torino?
that would be about bullet proof w/ one of those and a 205 tcase. if you do go w/ a c6, any , small block or bigblock tailhousing will bolt onto either case. im not sure but i think the shaft will have to match the tcase you are using. if you have any other q's, call sidco 4x4 in glenco, mn. do a yellow or white pages search, w/ the town and ask sid. hes a ford guy and knows a lot about this older stuff.