Summit offers 3 cam/lifter kits for big blocks:
SUM-K1301 266/276 intake/exhaust duration (0.500 lift on both, 2200-4500 rpm recommended range.)
SUM-K1302 276/286 (.540 lift, 2500-5500 rpm)
SUM-K1303 296/306 (also .540 lift, 3000-6500 rpm.)
These come with lifters and sell for $83. "Word on the street" is that these cams are ground by Crane and just have the Summit label on them. I've used 4 or 5 of them in smallblocks and had real good luck with them.
I'd think that for a torque motor you'd want to go with the 1301 or 1302. The 1301 might work with stock valve springs. Not positive on big blocks, but the "rule" for smallblocks is anything over .480 requires spring work.
Just some suggestions,
