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Username Post: Vacuum Advance- how is it supposed to work?
Senior Member
Posts 250
04-06-10 03:58 PM - Post#1893969    

  • Mr. Sinister Said:
yeah, switching to full manifold vacuum probably doesn't do much for a stock engine, it's definitely more for performance applications.

On my motor home with a 454 it makes that critter sing right along from the initial startup, Just make sure you have corrected the vacuum advance..
My V.A. is now 11º with a 22º mechanical advance and 11º base timing (8.5 to 9.2 MPG and strong on the hill climba..


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