Hitting a flat spot

Trailbeast, Yes I have a Edelbrock AFB 600. HE is Running A Edelbrock 650 AVS. So they are similar carbs.
I think that the pump is not keeping up and the Idea of the"small" Edelbrock fuel bowls sounds like it could be the culperet.Because the fuel line from tank to carb is 5/16'' I think a electric booster pump from the tank to mechanical pump is in order.QUOTE]

It was just a thought, in case you couldn't find any other reason for it.