Won't Fire - Need Help!

"Initially, didn't have the 90 degree oil adapter tightened enough and blew out the gasket during priming and dumped about 2 quarts of oil on the garage floor..." The good thing is you caught it. When I had my 318 back together in 1980, I didn't notice the plug on the back of the block was missing. Had to pull engine and split tranny from it to put a plug in. Hey, I was a real rookie here. At least it didn't start.