Edelbrock 1406 Not Pulling Fuel into Carb

some things to try:
after the engine has been running, shut it off and see if the accelerator pump squirts gas in the carb throat. I predict not, and that is why it has to be primed with gas.

Disconnect the line from the carb after the fuel pump and run a line to a gas can. Get somebody to crank the motor and see if the pump produces a strong consistent stream of gas (helps to use clear line to the gas can so you can see the fuel).

Are you using gas with ethanol without a treatment? If so the plugs in the carb can be deep inside passages in the carb...