Auto transmission in Mk4, anyone install one

[Fordguy]

I would like to install a automatic transmission in a Mk4 roadster. Can anyone share experience with this install. My question is how much modification is needed to the trans tunnel and subframe?

[Gordon Levy]

I have, mostly the AOD. You have to cut off all the useless exterior tabs on the housing but it fits. I beleive the 6R80 will work also with the coyote.

[bspaulsen]

If you plan on getting an engine from Blueprint, you could probably ask them nicely to measure the difference between the auto and manual packages. For example, they're offering a 427 with a TKX manual or a 4R70W automatic; you could ask about length/width/height measurements.

As I recall, Gordon's right about the 6R80 mounted to a Gen2/3 Coyote. Don't think the 10R80 will fit.

Here's PBH's 6R80 measurements: https://pbhperformance.com/6r80-dimensional-drawings-for-your-coyote-swap/
Here's the TKO/TKX/T56 measurements, which will undoubtedly fit: https://www.holley.com/blog/post/inside_tremec_s_new_tkx_five-speed_manual_transmissions_and_how_they_compare_to _the_tko_t56/

Other than a custom driveshaft, I'd venture to say no trans tunnel mods are needed, though the shifter may be an interesting situation.

[michael everson]

The AOD required some mods to the trans mount as well to clear the pan.
Mike

[otto halstead]

I had a 5.0 with an AOD in my MKII, when it was totaled I took the engine and trans and installed it in my MKIV Roadster. As mentioned there are a couple of tabs on the trans case that need to be trimmed down. I also had to modify the trans mount to clear the pan, but I have an aftermarket pan I mine.