Look in the pump you pulled off. Specially the relief valve. If you got something that blocked the valve open it will not prime and build oil pressure the next time you try to run it. My brother had a 383 that parts of the nylon cam gear did that to a couple of times. That relief valve is what determines your oil pressure so your new one must have a stiff spring.
Bryce


Every electronic device is manufactured with smoke stored deep inside... only a true genius can find a way to set it free. The most terrifying words in the English language are: "I'm from the government and I am here to help!"