Hey guys, got a 4.8l 4l60e in my truck. It's 2wd. I would like to upgrade it. Now my understanding is that the block is the same size for 4.8/5.3, does that mean when I do a rebuild I just got the kit for a 5.3, and upgrade the computer? As for the 4l60e transmission, same question pretty much.
After that, what ratio in rear end would be half decent for milage, but also have quite a bit of torque. I have 3:23 at the moment.
Lastly, once all that is done, what performance upgrades could I do? I have every intention of taking it to tracks, but I also want to be able to drive it legally on the road.