My 4l60e is losing 2nd and overdrive and I'm gonna be make some engine upgrades and be right around 6 to 700 hp and 4l60es cant handle that so I was gonna go 4l80e if it goes out I'll get it built and be good to go
I'm looking at ditching the 4l60e and going 4l80e just want to make sure I'm getting the right transmission not sure on what years work with what I know the wiring has to change a little trans lines have to be changed and shorter drive shaft and spacer for my torque converter and the flywheel...