As to which engines on that AF -328, in 1972, it would certainly have the latest dash number (JT4A-11) at that time, these had 17,500 lbs of thrust each, and the maximum gross weight was up to 312,000 lbs. They were guzzlers, but had adequate power. Funny is, their performance was great at higher levels above FL350, whereas the JT3D fans "ran out" of vitamins and ideas above FL350.
Yup, quite true.
So much so, in fact, that a few unknowning pilots tried to climb 'em well above their optimum altitude for the weight (mass, for you disadvantaged European folks), and encountered the classic jet upset.
Not good.
Once or twice, engines chucked right off the pylon, on the way down.
