I just finished repairing a 1972 Plymouth Satellite. I put in a new tank, fuel lines and sender, fuel pump and filter, and new line from pump to fresh rebuilt carburetor. It took only a few spins of the engine, less then 20 seconds to fill the carb. That was with 8 gallons of fuel in the tank through about 14 feet of 5/16" fuel line!
Your pump should have no problem priming the system. If the pump has set dry for a while with modern fuel in it, chances are it has dried the rubber out so bad its now no good. Might be time for a rebuild on the pump.
Joe
