That was part of my test. That pump was a standard volume pump and I ran it and a off the shelf high volume pump on my race car for comparison. I used the same relief spring, and the pressure going down the track was the same. I was happy with the standard volume pump, but I didn't see any significant track ET improvement.

My street 440 sees higher oil temperatures and lower idle rpm, so I run a high volume in that. With the HV, hot oil and 900 rpm it gets 25 psi. The main bearings are wide groove full and I think that bleeds some pressure too. Driving down the road at 3000 rpm, it is 65 psi, hot.