340 Oil Priming Question First Start

Is this a new engine or one that's already been ran?
This is not a new engine. This engine was running but sitting for four or five years while the body was getting done in the car with oil. Fresh oil was added fresh coolant as I said in the first post all the plugs are out as well as the distributor, I fogged the cylinders, drained all the fuel, removed the carburetor. I figured since it’s so long that I should be smart and not lazy and prime it.