Have you primed the pump since you blew air thru the pump? If you have the pan off you can check the oil pump drive pin from under neath. The pin is thru the cam shaft just ahead of the rear cam bearing.
Once you have air in the system it has to be forces out the bottom by putting oil in the top of the pump. I do it a little different than most. I take a foot or so of rubber gas line and clamp it over the end of the tube fitting that screws into the tee in the head. I take a pump oil can and fill the hose a coupla times with motor oil letting it run down in between fillings. I then fill the hose and force oil down the tube with the pump can. I them put the end of the hose under the rocker arms and crank the engine over until oil comes out the hose. That will prime the pump if it just needs priming. I take the spark plugs out so it will turn over easy some times. If it does not prime I have pictures that I can post to show you where the pin is located. A fellow was able to put a new pin thru the cam to get his pump turning a while back. I can help you work thru that if priming does not work.
