I am running a 500ci Brad block ,with an RCD dry sump pump with a BDS 8-71, in a older nostalgia funny car. My problem is that when I rev the engine, the oil pressure will drop. It can start out at 160, at idle, but when I start to bring the rpm's up, the pressure starts falling all the way down to around 80 psi. When the engine returns to idle so does the oil pressure. I am running 60 weight oil, I have pulled the pump apart, but cannot find any issues,etc. Also I am running a system 1 oil filter. To rule out the dry sump tank , I have even went as far as running the engine with the pressure and return hoses in a 5 gallon bucket of oil. By observing this, I was surprised as I thought the oil level in the bucket would start to fall when reviving the engine, But the level remains virtually the same as when at idle.... Any ideas.. thanks..srt1955.