If the pressure is below the bypass pressure, all other things being equal in a loose engine, the HV pump will read a higher
oil pressure than a standard.
The bypass setting will be the absolute maximum
oil pressure you see. I don't know if the bypass pressure is the same between the two pumps. Doesn't matter to me. I want the HV for when the bypass is closed and I'm hot idling after kicking it in the teeth. I want my hydrolic lifters to not bleed flat.
If you tell me I should have the correct bearing clearances instead and the HV pump is a bandaid masking a bigger problem, I'll have to agree. But the HV pump might make a tired old engine make it through the season and that's good enough reason for me.
My problem was having a iron cam and thinking it was steel. Shame on them for the poor documentation I got with the motor, but shame on me for not calling and getting the answers I should have. And it's no longer a problem!