64 Fairlane 289 Fuel Pump Mystery

[CustomGT]

Hello, my waterpump went out on my 289.
I pulled over, and stopped and got a ride. Came back in a couple hours and started the car and moved it like 20 feet.

Came back 2 days later with a trailer, and couldn't get car to start. Loaded it on a trailor.

Replaced waterpump, thermostat, oil, oil filter, fuel filter, gaskets...

Try to start. Nothing.
Can suck fuel from fuel line if take off fuel pump - yes
Full tank of gas - yes
Take fuel line off and put gas can strait off fuel pump - doesnt suck it
Went and bought new fuel pump
Same problems.
Can sometimes suck (put my finger over the suction side, then other times it doesnt suck)
What does this sound like? Is there anyway to put this mechanical fuel pump in wrong? Did i get another faulty fuel pump? Is something inside the motor broke that hits the fuel pump lever?

Thanks!