I can tell you that you should not expect to see copious amounts of oil slobbering out like a gusher. The rocker arm and rockers are a fairly tight fitting bunch of parts if they are in good shape and when the oil is cold, you will not see much oil escaping the parts, especially so if you are only turning the oil pump while everything else is sitting stationary.
If you want to confirm oil is rising up through the block, loosen the rocker shaft pedestal that covers the oil hole in the block and then spin the pump.
And remember, it takes a moment to fill a new oil filter up too, and that has to happen before oil flows into the galleries.
Oh, and the correct direction of rotation for your drill will be counter clockwise, the same as the direction the distributor shaft turns. If you turn the pump CW it will suk.