I installed a vacuum gauge in the cab so I could monitor the engine vac while driving.
I was wandering if anyone else had done the same, and what your average "driving down the highway" vacuum is at?
while driving at 55mph, I seem to be setting at 12" vac and 2250rpm. does this seem about right to everyone?
worth noting, at warm idle, it's pulling a steady 18-20".
thanks,
muddy