Backwards compatibility is a well-known concept in tech circles, but you need not be a software engineer or Playstation 3 loyalist to appreciate it. The Ford C6 automatic transmission is a great example of this in the automotive world because it’s also the foundation of newer automatics in Ford trucks. And thanks to this shared foundation, Ford’s C6 is backwards compatible when it comes to refinements implemented in its successors ... Read the full article on Hagerty.com:
I watched a YouTube video showing a C6 getting taken apart, and yes, it appears that band is needed to engage 2nd in any C6...possibly any trans based on the C6.
The 1972 Mark V with the small chrome bumpers will always be the best looking version. However, unless your 2,200 rpm converter is a lockup unit fuel economy will suffer.
i am a mopar man, but must admit the C6 tranny is a great, dependable tranny. the wife drove a 78 mercury marquis one time. i decided to change the tranny fluid due to discolouration. drop the pan and find a small mound of aluminum shrapnel. no sign of where it came from. oh well, eh? button it back up, new filter and fluid and drove it until she rusted out. tranny never gave a sign of issues.
C6 was fords best trans made. Had one on my 68 wagon with the 428. Never had a lick of problems. Was used for a car pool, 10 adults ,140 miles a day in the heat of the Mojave desert. Only problem was tires until I went with light truck tires.
I also own a 1972 Mark IV I just had the C6 rebuilt as it was leaking and shifting badly. This is definitely something I'm going to do. My Lincoln is the Wimbledon White with black vinyl top and red interior. I added fuel injection for better drivability. Great car I enjoy driving her on long road trips.
gotta have 4 in any auto. Was thinkin AOD, as that same lill pea brain thinks of the C6 as really a truck transmis (I know, I know fairlane, torino, ltd). Will look into this as U have schooled me today~
This is definitely going to go in the wife's '79 T-bird when it is time. I have had multiple vehicles with the C6 and have always been rewarded with a bullet proof trans in every case. I don't know why, but after rebuilding my first c6, I seem to enjoy rebuilding automatic transmissions. The way they work is just automotive science and engineering at their best.
Adding an OD trans to an FE engine is pretty expensive because nothing bolt up directly. The adapter kit alone is almost a grand if this website is any indication. This place has an adapter for a little less for a Chevy trans. Adding in the cost of a rebuilt trans, whatever metalwork is needed for a transmission crossmember, and likely driveshaft shortening and you're gonna be out close to $3000 when all is said and done. Maybe even more than $3000?
I think you'd have to drive a lot of miles to ever get enough value out of the swap. Just rebuild your C6 like I did in the article. Tell me what you think.
I am not a huge fan of gear vendors (their customer support after the sale has been disappointing to me) and I would much rather have a trans with a built-in overdrive. You can make a 4R70W handle this kind of power, and they make adapters for the 460 (and your 390) bellhousing.
The 10 speed is probably overkill for older vehicles that make no power/explode over 6000 rpm, so my "epic combo" would be a 2010s Ford 6-speed automatic with a standalone controller and all the adapters/manual labor/fabrication to make it fit in a space originally designed for the C6.