[gsharapa]

I agree you need to do 1 change at a time. Not sure I'd go up on the power valve as that could really give you a rich idle and off idle situation. In several of my past Cobras with big small block motors I was running 3.5 and 3.0 power valves because of the low vaccum I was loading a lot down low. Something to consider. I'd work with jet change and then air bleeds again first. After I posted earlier we ran my 496 FE the next morning with higher air bleeds and it was up at 13 across the band and went up to 13.7 over 6200 rpm and did make more HP. Going to leave it there for now until I drive it and see how the driveabilty is. I'm running a 850 Quickfuel however.