The rocker studs on stud mounted heads are what we're talking about, correct? If so, 55 ft/lbs is what it needs for a 3/8" stud. Im not sure if a 7/16" is more.
Now if you're talking about torquing pedistal mount rockers, I have no idea.
Straight from afr's site: Rocker Stud Torque 55-60 ft. lbs
Rocker Pedestal Torque 25-30 ft lbs