Projects galaxie c6 swap question

Anyone know what c6 I can use? I found one all the guy knows is its a 79. I know it needs to be a flat top but if I remember correctly there is 2 different flat tops?....any way to decode the numbers on the trans or anything like that? The pic is the actual trans I'm looking at

 

It's a 61 galaxie with a 352

 

That suits a 429 460 BBF looking at shape, not FE or SBF

 

This suits FE

 

Well*****, I guess I'm still on the hunt then....thanks..

 

Most common spot for an FE compatible C6 is in a '70 to '76 2wd F150 / 250's with 360's or 390's.

The 1979 date of the 1st transmission should have been a big clue since Ford stopped making FE's in '76.

 

The last year a FE was used in cars was 1970. As noted above, the FE hung around in trucks until '76 but most were the short tailshaft versions until '73 when Ford finally got away from the two-piece driveshaft on the longbed trucks.

 

Does it matter if I got a short tail shaft or not

 

Yep, it does. The short tailshaft versions don't have a slip yoke on the output shaft; the yoke is bolted to the output shaft (like a rearend). The slip yoke was in the rear half of the two-piece driveshaft. I suppose you could have a custom driveshaft built with a slip yoke in it (Jaguar did this with the GM TH400 they used behind their V12), but it would probably be easier to convert a short tailshaft version to a long tailshaft with a donor C6 from another application. This will require complete disassembly of the trans though....

Ford used a one piece driveshaft in the earlier shortbed pickups with the long tailshaft, but not many of those were sold with FE motors.

 

Ok, thanks

 

Another quick way to tell the FE trans is the 3 bolt starter flange.