Robert, I don't think it's the type of carb that would make any difference, unless the input to the bowl is smaller on the Q-jet, I don't think so. If you're running say 12.5 to 1 air/fuel with an Edelbrock and 12.5 to 1 with a Q-jet, two engines with the same volume at the same rpm will use the same amount of gas. Do you still have the small filter in the inlet of the carb? Most guys I know who have Q-jets toss those.
What about the needle seats, are there some with a larger orifice than others? Or can one modify the seat to flow more gas if needed? I would think the pump at 6psi would be able to fill the bowl as fast as the engine is emptying it, with moderate street engines like ours.
I suppose I could calculate how much fuel I'm burning, at say 6000 rpm, using my air fuel ratio, swept volume, temp, air pressure and all that. Then see how it relates to the advertised output of the pump at a restriction resulting in a 5 psi head. Carb specs always tell you the rated CFM but not the fuel flow, how many pounds of fuel an hour at a selected ratio.
