Al, as CP said... if your cl;earances are good, your idle pressure with the HV pump would be very high. In your case, it is. Because the larger volume per rotation of the HV pump is forcing a ton of oil thru the bearings. Pressure is resistance to flow. Not flow itself. The reason the pressure goes to 80-85psi and stops dead from 2K and up, is because teh pump has reached it's maximum output THRU YOUR SYSTEM and the breaings don't have the room for the excess. That means teh pump pumps like mad, and the excess is forced thru a spring loaded bypass and back to the pan. All you did was use up horsepower power to force it thru there, and ad heat trying to compress it. Takea wrnech some day and preoil the engine by hand, you'll see how much power it takes...lol. The idle rpessure should be lower, and should immediately come up, even with a stock pump, because teh output is more than enough for the oil sytem clearances. By running the HP model, it pumps the same amount as a stock pump, but at higher rpms, it develops more pressure. I modify my oil systems to be much larger in volume, but I run a stock pump. The result is typical max pressures in the 55-60psi range, but at 30% more oil available at the bearings than if the pressures were 85psi and stock passages. And that's with stock displacement pumps.