4L60E to 4L80E conversion in a GMT900

[farmtruc]

The one 4wd truck we've done, 4wd still don't work. THat's after doing the 80e conversion, and using an 80e tcase.

gonna figure it out next week.

[FRANKO]

thanks I realy need a 4l80e because Im going to boost I have the mp3023 tcase please post it ones U figure it out THANKS

[farmtruc]

we bought every part and tried everything we would think of with the stock 60e tcase, no parts we bought were interchangeable.
we tried to install the larger shaft to accommodate the larger output shaft of the 80e.

We ended up putting an 80e tcase in the truck, of course went right in, but now the controls don't work.

the 80e case has a different connector setup and missing one solenoid, if i remember correctly.

we'll get back on it in a couple weeks, customer dropping off for a whole for us to ts.

[FRANKO]

nice I will b waiting for the results

[FRANKO]

I wonder if U could use the mp3024 tcase from wat I read its a 32 spline

[KHester84]

I'd be curious to see if the 3024 case would work also...

[PEWTERLIFTEDZ]

dang i was really hoping this had been figured out. i thought maybe a 6l80e autotrac transfercase input shaft would work.

[PEWTERLIFTEDZ]

another option is that the output shaft from the 4l80e could be changed out to a 27 spline output. i know they are out there.