Who has done a 5.7 with a833 4 speed Overdrive ?

Notta chance
would I run the Factory A833od box with that engine.
The od gear is IMHO extremely fragile. and when it blows up, you have no control of where the flak goes. If it goes thu the cluster it will wipe that out too, and now you are out shopping for another box.
Plus, you know, the ratios are so far apart.
3.09-1.67-1.00-.73od, splits of .54-.60-.73 into od.
So whatever you rev it to in First gear, the Rs will fall to .54 of that when you hit Second.. If your torque doesn't pick up until say 3800 rpm, yur gonna want to rev first to 3800/ .54=7040
and Going from Second to Third, 3800/.60= 6330.
When you get used to that, your instinct will be to slam it into fourth, and instantly the inertia of the flywheel will disintegrate your od gear. Bye-Bye trans.
Ask me how I know, after three of them ended up on my junk shelf.

If you insist on using that trans, then I highly advise you to install a lock out on overdrive, to force you to think about that poor 20tooth gear.