Well guys I have another problem. I had my 350 rebuilt and It is running good. I only have about 100 miles on it so I have not been hard on it. I finally let the rpm get up to about 3000 and the oil pressure drops from about 60 lbs to 20. I let the rpm drop a little lower and it rises back up again. I have not tried another gauge yet or anything else. I thought I would get some ideas first. The gauge I am using is a mechantical gauge.