Side to side turn is just the backlash of the gears.. That is fine.. In and out would be bad.. You shouldn't have more than about 1/8th turn max depending on how loose or tight your rear end is set up..? Sorry I can't help you with tork specs, I've just never done it that way..
Truck: 05 GMC CCSB SLT Z71,
Go Faster: 5.3, 219/227 .607/.614 112, milled heads, eBay CAI, Circle D 2800, 3030 Built 60E, E-Fans, 3030 Tuned, LT's, Spintech Muffler, DuraGrip w/ 3.73's
Look Better: 10K HID's lows & fogs, tinted Chevy tails