So 65 mustang radiator "Farm Fix In". Motor oiled and turning over with starter no plugs. It has no oil pressure, should I expect some on cranking? Gas can in place bypassing the tank. Gas was tarnished but not jelly in line Lucky so far. Friend cant find key, Husband does not know we are doing this but might have to let cat out of bag. Really want opinion on if we should fire before oil pressure on cranking. Let me know.