normal oil pressure is 48 to 60
The oil gets thinner. It is normal for the oil pressure to drop after the engine has reached full operating temperature. If you have from 30-40 psi pressure when the engine is hot then that is normal.
The normal oil pressure on a GM 305 engine is between 40 and 60 PSI depending on the model year. High oil pressure is needed to allow for proper circulation through the engine.
It is normal for the oil pressure to drop when the engine is warmed up and at an idle.
Oil pressure has to built up. As long as the pressure is normal and the oil level is good. There is no problem.
80 lbs
Need to know the year.
replace the oil pump or the engine could blow
A good rule of thumb is to look for 10 pounds of oil pressure (or more) per 1000 RPM of engine speed. Below that, the engine may not get proper lubrication.
Oil level and oil pressure are different. You don't need to have full oil to get normal pressure.
Around 40
As the engine speed increase so does the speed of the oil pump. the faster the pump turns the higher the pressure becomes. When changing gear the engine speed drops along with the oil pressure.