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Technical Stewart Warner mechanical tach

Discussion in 'Traditional Hot Rods' started by oval55oval, Nov 29, 2020.

  1. oval55oval
    Joined: Jun 3, 2011
    Posts: 30

    oval55oval
    Member

    Guys, Anyone have 60’s catalog that can tell me what the ratio is of a 531PF1 Tachometer, hoping it is 1/1, but figure it is 2/1. Thanks for the help.
     
  2. deucendude
    Joined: Oct 31, 2008
    Posts: 704

    deucendude
    Member
    from norcal

    Mine has it on the tag on the tach.
     

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