mkspeed26

so i was takin apart my trans today and noticed somethin a little weird. the picture of the trans provided by B&M and my trans looked nothing alike. there was no servo on the side. so, after a ton of searching through google, i found out that i think i have a ford FMX transmission (thought i had a C4 before). does anyone know anything about these? it said they were very stout, but i think i may try to sell it because of the lack of parts in the aftermarket for it and try to a good solid manual trans.

Tim37

they are a good stout tranny if i remember right you can buy shift kits and other little things for them. but you might have problems finding converters and such. they had a cast iron center housing with alumium bell and tail shaft. nothing wrong with them in a mild street car they are kinda wierd because they are a rear load tranny Meaning that instead of putting the guts in throught the front like most trannies it all goes in the back. (they can be rebuilt in the car) they typicaly aren't worth a lot because of lack of aftermarket support like you have found unless youneeed a big stall i would run it unitl it dies.

malcons66

yeah i was wondering too. a few months ago a friend of mine gave me a ratchet shifter and i was installing it and relized it was not a c4 but the FMX. does anybody know who makes a good shift kit for the fmx tranny? i dont really want to replace it, i had it rebuilt a few months ago.

rmodel65

trans go i think maybe ask this question this tranny was used behind the 351w,351c it is a good medium duty trans

closer9

Correct me if I'm wrong here, but didn't the FMX start out as a heavy duty tranny in the F250 & F350? My '75 F100 has a C6, but I'm pretty sure they were only available on the heavier trucks. I wasn't even aware they ever made it into Mustangs, or has someone else installed these in your vehicles???

uedlose

Do your self a favor and sell it and get a C-4 or a stick.I have not done any FMX trans yet but. I have heard nothing good about them and they are very heavy due to the cast iron center case and like said not real easy to get performance parts for.A c-4 will take just about any thing you can throw at it if done right.

mkspeed26

it wasnt in a stang, it was in a 78 thunderbird w/ behind a 351W. im gettin rid of it and goin for a TKO600

C/Note

FMX > HAS CAST IRON CASE! not a bad trans ,,i got one in my truck ..i got TCI shift kit and 11 in convertor ..its heavy and heavy dudie,,i got coulum shift i dont know if they make a shifter for floor ?? i dont see tham listed..???

Tim37

ya might be able to modife a c4 or c6 linkaget to make it shift.

mkspeed26

but im road racing it. im just gonna go with the TKO600. its better off to go manual