Good mods to make torque in a 440

I don't know anything about 440s. But I'm pretty good with math. IIRC that crank is 3.75 stroke, right? Well that would make .100 down in the hole equal to about 24cc. That sounds like a pretty deep hole. But the swept volume is over 900cc, so that's in your favor. To build torque, even with a smallish cam, you will need to select your chamber size pretty carefully, to keep the Dcr up.The closed chambers, I imagine would go a long way to achieving your goal.
I had a 223* cam in a 360-4spd that made a lot of torque. Enough to break 275s loose at 35 to 40mph in 2nd with 3.55s, on a 3650lb fbBarracuda.. But I had the compression to go with it. I had to floor it with a 750DP.
Since that engine is over 22% bigger than mine,I can only imagine what that cam would do in your 440!