so you are going through 2 gallons or your complete
oil inventory every 30 sec. at 2000 rpm, 4000 rpm is every 15 secs. Depending on how your
oil returns, I see aeration could be a factor. Keep putting spring in it and next your cam or distributor gear will go, or if you are lucky the pump shaft. What weight
oil are you using? I don't see how the pump would level out on psi unless it goes into bypass or there is a restriction on the inlet or they are taking something else into consideration.
just musings....