What year truck in question? 73-80 3/4 tons had the 14 bolt full floater with 10.5" ring gear. THAT axle will turn 44s without blinking. 81-87 trucks had the slightly smaller 14 bolt semi-floater with 9.5" ring gear. THAT axle I would not use to turn 44s.
EDIT: 81-87 Camper Specials or Heavy GVWR 3/4 tons did also have the big 14 bolt.