I'm wondering now that maybe it really isn't a broken converter, just the fact that I was on motor only with a nitrous converter and 5000+' air.

Trans in the truck worked pretty well. It went into limp mode once in Iowa when I was running 70 up and down all those hills with a 20 mph or so headwind and 90+ degree weather. Slowed down to 65 and it was fine.

It is locking up the converter too.

I may swap in the valve body from my spare 46RE I have laying around Saturday.