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    1. #1
      Join Date
      Sep 2005
      Location
      Scottsdale AZ
      Posts
      294

      Is vacume advance needed

      I am considering installing a MSD 6AL on my HEI system and the only HEI wiring available says HEI "without" vacume advance.

      The motor is a 383 approximate hp is 475.

      It is connected to manifold vacume as that is all I could access on the carb.

      Could I do without the vacume advance?






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