ash79
on the -400 we have the rb211-524h-t, the pw4062 and the pw4056 (a few pounds less thrust than the 4062, but essentially the same).
barit1
youre right the cf6-80 is a variant on the -400, but cx only have the CF6 on the classic 747f, soon to retire, the cf6-50e2. though we do have the cf6-80 on the a300-600, the -a5f.
regards,
n1 vibes