Are NA and TT autoboxes directly interchangeable? i.e same ecu , wiring , etc etc ,

edited because I was talking about something else entirely.....:oops:

Edited July 11, 201411 yr by Steams

Thankyou, but im talking about the autobox, are you commenting against the Diff ?

Quick Google got me this info:

 

So I just pulled the NA auto out today (already had ordered the TT trans so I have it) and side-by-side, the turbo transmission is about an inch longer.

The bolt patterns in the bellhousing are the same (FSM shows different bolt lengths, though) but as someone said, the flywheel is different - the torque converter bolts are about 6.5 inches apart on the NA and 7 on the TT. Also, the propeller shaft yoke is much bigger in the TT and I'm assuming since it is a longer trans that a different shaft will be needed.

The biggest problem I saw is that the transmission crossmember (wasn't included in my TT trans, just going off mounting holes on trans) sits about an inch further back, so none of the crossmember holes will line up.

 

Has anybody done this transmission swap? I may be overlooking something, but it looks like you'd have to drill/thread new holes to get the crossmember on, which is definitely not worthwhile.

 

I got a TT trans because it was much cheaper and plentiful (from coming off auto TT clips) than the NA trans (not to get a beefier transmission) and at the time, I couldn't find info saying they're different.

Thankyou, but im talking about the autobox, are you commenting against the Diff ?

 

Sorry, Yeah I was... Just ignore me...lol