4L80E/NP205:Anyone done this?

[special-K]

I~m checking into this possibility before I commit to a 700r4 swap.I have a`91 3/4t Suburban with the 4L80E/NP241.It has a stand alone ECM for the trans since it is a mechanically injected 6.2 diesel.So electronically it would be possible.I`m not using this vehicle as the donor,just saying there is such a set-up.Street rodders are using the 4L80E,too.So,there`s a computer available.Is there an adapter for the NP205,though?The NP241 is the next best thing and could be found coupled with this transmission.I`m exploring right now.Any input appreciated.

[gn4u2c]

I am sure that can be done. Anyone have one out you can try to match up with thats a good idea !!

[bgeraurd]

4l80e/np205 came in the 91 crew cab 4x4 trucks

[Russell]

Yep, it can be done, and as bgeraurd mentioned, it actually came stock on some of the crew cab trucks with the solid front axle

[Richard]

You need a stock TH400 adapter, for the "race track" style 205 with the 32s female input. The index ring on the adapter needs to be machined a few thousandths to fit the tranny and the output shaft needs to be changed to a full spline version out of a motorhome so it can be cut to length. I not really sure about the difference between the 2wd and 4wd versions of the 4L80E other than the 4wd version not using a tailshaft. But I was told to use the 2wd version. BTW I have an extra new adapter machined and ready to go. Shoot me a message if interested.