How much power will a stock 904 handle

My first car was a 76 charger SE (a Cordoba with different grill and taillights) with a stone stock 318 aside from an intake and carb from the car's original 360. We swapped that 318 in at dads insistence before the car was handed to me.
When the engine got swapped dad took the 727 out of my brother's wrecked 74 charger to a trans shop for a rebuild so it was "fresh" along with the 40k original mile junkyard 318 dad bought to go into it. Dad drive that car as his work car for a few years like that (after the 318 swap) before it was handed down to me.
That charger got hit in the parking lot at work so I bought a 75 cordoba to swap everything I could into it I could from the charger. Then a 79 ramcharger. I couldn't keep a trans in that Cordoba to save my life for more than a couple of months at a time until I quit with junk 904s and put a 727 in that car too. Both the charger and the cordoba were originally 360/904 equipped.