[elmariachi]

I am running a stock Mighty Demon 750 with annular boosters and mechanical secondaries and I had the same bog. After jacking around with the carb and getting nowhere I decided to take Don Gould's (4secondsflat.com) recommendation and make some drastic timing changes. I was at 16*+20 advance with medium/heavy springs but I am now testing things at 20* initial +14 advance, two blue springs, MSD mechanical. The bog then went away leaving me only with a slight hesitation off idle and a sooty base ring on the plugs. So we ran the Idle-Eze out to the 1.5-2 turns out zone, dropped to a 3.5 power valve and fattened up the mixture to 1 3/4 turns out. I know everyone will say that's a bit too rich but the plugs now look spectacular. And we reconfirmed the transition slots were correct/square after all this.

Car now idles at 850 rpms with an AWESOME pattern (uh baadda bump, uh baadda bump) and she'll jump out of her skin when I hammer it. This is with a MR side oiler, Sidewinder intake, stock heads and Comp 294S.