Looks like GM does some weird crap:Is it a digital or analog oil pressure gauge? Lots of analog gauges aren't very accurate. What does the service manual say the oil pump pressure relief setting is?
50 PSI pump relief setting is the lowest I've ever heard of ... wouldn't say that's typical with the majority of engines. Most engines I've seen are more like 80 to 90 PSI to hit pump relief.
Backed-up by this article:
Michigan Motorsports specializes in LS1 performance Parts, LS3 Rocker Arm Trunions, Electrial harnesses and adapters, and Diesel Parts
- High pressure performance upgrade for M295
- Stock volume (factory volumetric flow rate, around 6.8 GPM), 10% increase in pressure over M295 oil pump
- 33 PSI Pressure Relief Valve Spring
- 0.96 Displ (cuin/rev)