As Don mentions, you can drive the oil pump using a drill, but you will have to remove the distributor drive gear to do it. It rotates counter-clockwise, and make sure you have a good grip on the drill. As the pressure comes up it will create a fair amount of torque. For this reason, I wouldn't make the tool from a dowel, as it could break.
I do all mine this way, using an adapter shaft I made from a piece of stainless steel I had lying around.
Jeff