Edlebrock Carburetor Fuel Pressure
The Carter 4070 is an external pump, not in-tank.
The E carbs are calibrated with pressure being 5.5 psi. The fuel system is a direct copy of the original Carter AFB/AVS design, which can run with 10 psi. Changing both/either the needle & seat size or fuel pressure changes the fuel level in the bowl. If more pressure is used, the fuel level should be lowered slightly. Carter published graphs that cover this.
The Carter 4070 is an external pump, not in-tank.
The E carbs are calibrated with pressure being 5.5 psi. The fuel system is a direct copy of the original Carter AFB/AVS design, which can run with 10 psi. Changing both/either the needle & seat size or fuel pressure changes the fuel level in the bowl. If more pressure is used, the fuel level should be lowered slightly. Carter published graphs that cover this.