How many of us are there? Owners of Dodge based RV's?

westtexus wrote:
Can anyone tell me if the vacuum advance on 440-3 distributer is to have constant vacuum, or not?

It should be to a ported vacuum, this way the timing will change
with the increase in vacuum. Use a timing light and watch the vacuum
change as you rev-up the motor, a non-ported vacuun would be a constant advance in timing.Unported vacuum is an excellent tuning tool to see the over-all condition of the motor 17-20 at idle is ideal.