Tuning help/suggestions

[kman67rsss]

ive got a 67 camaro with a BBC, and ive gotten it running deciently. but i am having problems on hard accelleration. it likes to stumble i guess would be the word.. Instead of nice smooth acceleration upon an idle to WOT smash it bogs down/hesitates a little before taking off. i have tried a few different pump cams but so far it seems best with the pink cam on the #1 position. i have the full cam kit but dont have a chart to compare whats what with. i have gotten it a little better. but can't seem to get rid of it. timing is roughly 25* initial with an advance of around 36*, but it doesnt appear to be timing. i have # 72 jets in the primarys and 80 in the secondarys. plugs look ok, maybe a little on the dark side but not black. im looking for suggestions as to where to go from here. carb is a demon 850 by the way. it almost seems like it runs outta fuel on those WOT smashes because if i roll into it gradually or if i pump the throttle it seems to be fine. thanks for the help and or sugestions