TX19 what I was hoping for when I asked for dyno numbers this time was that a few may have dynoed their BBF with different combos ie, cam "A", manifold "B", carb "C" .. that way I would have a better idea of which combo would work for me. Believe me, I read your other post :-) While we're discussing this, does anyone know if "Desk top Dyno" will give you many options as to what combos you can play with?