Ummm... is there a reason for the high volume pump?
My understanding of the 302 oiling system is that the pumps are fixed volume pumps. The stock pump is sized to flow oil through the oil passages and be at X psi while doing so. By putting in a higher volume pump, without having a need for more oiling (larger oil passages/ very high rpm's) all you do is increase the pressure but not necessarilly how much oil actually moves.
The end result is that you are putting a lot more strain on the pump shaft because it's trying to pump oil into a highly pressurized area. Most of the reading I have done has frowned upon high volume pumps in stock applications for this reason.
Think like a tire pump. It moves the same volume of air everytime you push the plunger down. When the tire has little pressure, it's easy to push. When the tire has high pressure, it gets really hard to push. Same kind of principle.