Thank you for the help, I have been searching the net trying to find the answer. I was under the impression they were the same except 2WD versus 4WD. Thanks againThe 4L60E is what it is, no matter what vehicle. At most you may have to swap bell housings to the one off your truck, but that's not a big deal. To my knowledge the bolt pattern for the bell housing has remained unchanged since the initial production of that transmission up to today.
However someone can feel free to correct me, if they know differently.:biggrin:
The 4L80E trans pan has 17 bolts and is shaped like:
The 4L60E trans pan is the same as the 700R4, has 16 bolts and looks like: