no thats not normal unless you built it to have that much pressure it should be readable on the factory gauge
I'm not going to say his gauge is working properly, but what is shows is absolutely normal.
I purchased my car as a pre-order brand new in 93. This is EXACTLY what the gauge worked like since new. I've replaced the sending unit in the car two times in the years I've owned it. All of them were consistent. I just rebuilt my motor after my injectors leaked gasoline in to the oil and took out the bearings. After that, My injectors STILL leaked fuen in and my oil pressure is NOT as good as it was a month ago when I finished the rebuild. Ok, I can tell you that my gauge is NOT accurate, but it does tell the story.
This Post 94 camaro LT1 loses oil presssure
shows a photo of MY Dash just a couple days ago after I changed my oil again and go the pressure back up where it should be. When the engine was freshly rebuilt and the oil was clean, it NEVER went more than one needle width below the 80 line, no matter how hot. It ran up to the stock high temp of like 230F, but since I had a new tune set the fans on lower. I don't know what temp they come on at but I think around 185. Whatever. My scan tool tells me the real temp and that's what I use if I really care.
Long story long... his oil pressure reading at 80 and pinned is not abnormal. My gas in the oil lowered mine and that is a fact. My motor with now 1000 miles on it has way less pressure than it did because of it and I know I've used up a lot of engine life with that mistake. I'll be tearing it back down for new bearings sooner than later.
With engine temp at 185F and 5W30 motor oil in the car, idling at 800 RPM's this is what mine looks like. And it was better than this when brand new, and with the new rebuild. If this is not normal, I don't know what to tell you folks.
When I start the engine cold, the needle is buried, way above the 80 line.