mahanian

I'm putting together my build sheet for my Gen III or Gen IV motor swap into my 67 Chevy C10 pickup and I'm starting to chase parts, but I want to make sure I cover all my bases before spending the hard earned dough...so your help with a few questions is greatly appreciated!

Is there big differences between the 4l60E transmissions through the years ('93+)?

Gear ratios the same? Is one beefier than the rest?

Differences between 4l60E car trannys and 4l60E 2wd truck trannys?

Will they all bolt up to all Gen III and Gen IV engines? I'm currently looking at an LS1 out of a 2002 Corvette but I'm not 100% set on it yet.

Is the same true for the 4L80E?

How difficult is it to add a 4L80E to a block set up for a 4L60E, mechanically speaking...I know the harness is different and the ECM would have to be reprogrammed.

Thanks in advance for the help...