BONE stock? Not much. Certainly not the amount of torque tha a 331 like yours generates.
Add a quality torque converter (I suggest Edge Racing), a shift kit (I suggest TransGo), and a transmission cooler and you're doing much better. Add a manual valve body (like Lentech's) and you're gold.
I've heard that an otherwise stock AODE with the four parts I mentioned can handle ~450 RWTQ.
With a rebuild using top notch internals (like mine), you could expect to handle much more...the shop that rebuilt my AODE said it should handle 650 RWTQ.