The sunshell flaring out or fracturing is pretty much (completely) separate from the # 3 clutch apply check ball digging through the separator plate. Hard 2-1 downshifts are what I'm most concerned with in this particular instance.

Now that I've done it twice (complete rebuild) I'm not nearly as adverse to the 4l60e transmission. But its built to sustain a given amount of torque. Blast through that threshold with disregard, and you're going to pay the piper.

All that aside, I still love to select the gears without the computer trying to steer me in the EPA's prescribed direction.

I'm the king of hijacking threads, but let's please get back to the topic at hand.