Just checked my manuals and the 8 has 30° sweep at 25% chord, so according to the janes info it is definitely less, that would seem to answer the question. Just to clarify though, pegleg, your question is not irrellevant. The slots on the 8 are only on small portions of the wing just inboard of the pylons. They are much less extensive than the LEDs on the 707. I have often asked myself the same question, now I know! Thanks guys!