Originally Posted by
Ascend Charlie
Wasn't the brit version of the F4 the slowest, fuel-burningest, draggiest, ugliest version of the F4 ever built? All to give Roys-Rollce a leg-up for local content.
slowest? Yes, for ultimate top speed at higher altitudes.
fuel-burningest? No, the Spey had lower SFC than the J79.
draggiest? Yes.
ugliest? No, no versions of the F-4 were/are ugly! They Spey engined ones were just 'beefier' looking!
-RP