833 behind a stout 440?

IDK about the odbox; I went thru 3 of those in one summer. On one, my 367 streeter sheared all the teeth off the input gear. On two others, I forgot about not putting power into the overdrive gear, and shifting it like a 4speed, I shattered those really teensey mainshaft gears. I highly recommend you figure out a way to lock out overdrive lol. That gear is for cruising only.