Great thread on the subject (from 2004):
Cathay Pod Nod's [Archive] - PPRuNe Forums
Pod nod was indeed a L1011 and not a Boeing problem, as described above. As for the 747 the angle of incidence of the engine nacelles was changed from about the second -300 on, nothing to do with SJ, but a refinement by the manufacturer (probably when the -400 RR design was verified) Supposed to make a small difference on fuel burn, but not enough for retrofitting costs. If you look at HVY and compare the engine 'angle' on the wing to the -400 you will see the difference.
