5.3 Chevy 1500 LC
After hard acceleration vehicle was hesistant and oil pressure on the factory dash slowly dropped to almost nothing. Check engine light with misfire code was observed. I eventually received the low oil pressure warning. I immediately stopped popped the hood to verify pressure on my mechanical gauge connected in the front engine port and it was reading 40psi steady.
After about 30 min I drove the truck for several miles without issue. I did not attempt to hard accelerate.
I plan to do some research on the oil relief systems. Any ideas?
Change the oil filter. I bet it has sludge in it that plugs the pleats when you increase flow. The dash gauge reads after the filter. The Port your mechanical gauge was on is reading before the filter.