Just did an engine swap on my 04 express v6 4.3. Im getting about 80 psi which i know is high, normal is between 54 to 62. What could be the problem? The engine that was put in had 44k and looked to be in great condition, no noise or rattles and had great compression on all 6 cyl. Another question i have is the pressure reading that you get on the gauge is that before or after the pressure regulator?