They have made the C-130 bigger. The C-130J-30 Super Hercules has additional fuselage sections fore and aft of the wing.
Not surprised they made it larger. Actually, the long flight I took on a C-130 was one of my best ever, with stops in Rota, Spain, The Azores, Argencia, Newfoundland and then on to Norfolk. Something comforting about the four big prop engines.