That sounds more like a carb tuning issue than a fuel pump issue. You won't use up the fuel in the float bowls in the second or two that you are seeing acceleration, then bog. It could be quite a few things, really, but it is either too much fuel or too little. When you stomp on it do you see any black smoke behind the car? If so, fuel might be sloshing from the float bowl into the vents, and flooding the engine momentarily. In that case a set of Holley vent whistles should fix you up. More likely it is lack of fuel during the accelerator pump shot, and you can tune this with different positions for the accelerator pump cams, or different shooter sizes. You might try watching the carb with the engine off while you slam the carb open. You'll see fuel come out of the shooters for some period of time; that's the accelerator pump shot. If the pump shot lasts about as long as the car accelerates before bogging, then you are probably running out of pump shot and you need to play with different pump cam positions, or different pump cams, or a smaller shooter size to make the pump shot last longer.
Glad to hear that the carb has made an improvement, and here's hoping you can clean up the bog issue with some minor changes...