Good job! Yes, you should prime the pump. I took an old, flat blade screwdriver (a long one) and cut off the handle. I inserted the cut end into a 3/8-inch drill, and the blade end into the distributor port to engage the oil pump. Make sure the drill is turning the same direction as the distributor. When the pump begins to prime, you will feel the load on the drill and see oil at the rockers if the valve cover is off.