Help to ID C6 C4 FMX

[Bob & Sue 110]

Last night I was 1/2 way under the car noticed my tranny is all aluminum at least the body & tail shaft I couldn't see the bell housing. When I bought the car the build sheet said it came with an FMX , looking at the paperwork from the PO when the engine was re-built they also re-built the tranny not sure if they swapped trans out for a C6 or C4. I used a magnet the trans & tail shaft are aluminum, I'm going to get it up on a lift next week to fix a worn out power steering boot and look it over.

Paper work also says installed shift kit & new extra capacity finned oil pan, no manufacturer names.

My real question is next winter I plan on putting in an AOD thinking it had an FMX in it now with probably C6 what other parts do I need to install an AOD & which year AOD would be the best for a 351W with about 375 to 400 hp.

I had pretty much everything figured out for the swap before I found this out.   

I'm totally ignorant on Ford Tranny's.

[stangnet33 88]

Just look at the trans oil pan bolt pattern

[det0326 179]

I have an AOD in my 69 and knowing what I know now I would go with the 4R70 with baugmann shifter.  The 4R is about an inch longer in the bell area due to the converter being thicker. It could cause interference with  headers. 

 

Dave   

[Ridge Runner 1,116]

A C4 is all aluminum ,the bell housing un bolts from the main body .

A C6 is all aluminum but the bell housing does not un bolt ,it is a one piece main case. 

An FMX bell housing un bolts but the main case is cast iron

[Bob & Sue 110]

Well it's a C4 thanks for the replies. Found the ID tag also.
Glad it is at least you can get parts for them.