Good mods to make torque in a 440

I picked up a 440 short block today from one of my buddies, 1966 block(67 model year) and forged crank and rods .030 with the old flat tops that were 100 in the hole. All rebuilt and balanced and waiting for me to add heads and cam and stick it in my Belvedere. My question is whats a good cam and what heads will work well with these low comp. pistons( probably 8.5/1). I am really wanting to make lots of torque down low to pull this big hog around and maybe spin some tires.I have several sets of 906 heads and one set of 516 closed chamber heads. The only cam I currently own is 490 lift with Duration around 300 so I wont be using it with the low comp slugs. I will be using some kind of dual plane intake but havnt decided which one yet. Any suggestions will be appreciated.