I think it was Charles Fonville because he was 200lbs. if he was lucky. But Ralph Rose was a monster at something like 6'5" and 280lbs. but I doubt that Jack Torrance was 111lbs. under him but Fonville weighed far less then both of them.
58'3 1/4" ( or what ever it was) is not a bad toss for a sprinter.
Fonville was supposedly 193 lb when he set record (58' 1/4", 1948). Torrance was said to weigh 304 (57'1, 1934). In '42, football great Al Blozis had an unofficial (7th attempt) 57'9 1/4 at a Madison Sq.Garden meet.