I used to worry about what tool/bit I used to spin the oil pump: bit-fit in the slot, breaking off a tip of the bit, seating the bit into the slot in the pump gear, etc
So, I took the drive gear out of an old distributor and gutted the distributor.
Put the gutted distributor in place, use the correct hex socket, and spin the oil pump using whatever drill suits your fancy.
I'd bet your electric drill has a max speed no higher than 2800 RPM?
My electric drills are 600 to 1200 RPM.
Air Impact Wrenches can go quite a bit higher RPMs.
