I think I may have goofed. I could have sworn I saw that info on the 2 bbl on a 292 in a shop manual, but so far all the spec books I've checked say single bbl on 292. I also seem to recall the shop my dad used to work for had an '80-'82 (?) C20 that had a 292 with 2bbl. I'm going to look around some more, see if I can find that manual that I saw it in.
