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vacuum advance

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  • Pat H.
    Very Frequent User
    • December 1, 1996
    • 419

    vacuum advance

    I was clearing out a friends garage and found a few C-1 original parts in a box along with a vacuum advance stamped B-19. I do recall that the Corvette suppliers indicate a B-18 on units they sell. Another recent thread indicated a B-22. What was this used for? There is a hand written tag on it 16' vacuum.
  • John L.
    Expired
    • February 20, 2009
    • 186

    #2
    Re: vacuum advance

    Pat
    My references don't indicate usages but they indicate that a B 18 starts advancing at 8 to 10 " hg and has 12 degrees advance at 13-16. " hg

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    • John L.
      Expired
      • February 20, 2009
      • 186

      #3
      Re: vacuum advance

      Pat that 12 degrees is distributor - or 24 at engine

      Comment

      • Terry D.
        Extremely Frequent Poster
        • May 31, 1987
        • 2690

        #4
        Re: vacuum advance

        B-19 was used on 69 Camaro 350, according to spec sheet I have it comes in at 5.5 to 8 and has total of 12 @ 14-18

        Comment

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