Using a large flat blade screwdriver, insert it in to the distributor drive that you can see in the hole, now turn the drive gear by hand, you will only be able to turn one way and as you turn the drive gear will start to come up away from the camshaft, it will probably drop down again when you try grabbing it, i use a coat hanger or a similar wire that has a bit of strength to it, bend a hook on the end of the wire to help extract the drive out of the way, now you will be good to go, remember that the pump on a Big Block rotates differently to that of a small block, depending on what you have will determine what way to prime the oil pump with your priming tool and drill.