th400 or 4l80e

[ff_jeff]

truck has a 60 in it now i thought of rebuilding the 80e and keeping it for backup for my 2500hd that seems to slip a little from take off. i know the th400 will bolt up just wondering if it will work with dbw

I dont see why not. I could be wrong though. It runs on vac. You would need to turn off all the trans stuff in HP tuners.

[fullthrottle]

400 probably has better gearing in it. Awesome tranny for the 1/4