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Technical Flathead V8 clutch linkage ratio

Discussion in 'Traditional Hot Rods' started by Truckedup, Jun 2, 2014.

  1. Truckedup
    Joined: Jul 25, 2006
    Posts: 4,430

    Truckedup
    Member

    I'm ready to fabricate the clutch linkage On my wing tank car build. Engine is a mid mounted V-8 60. Linkage will be cable operated,there is absolutely no room for a hydraulic set up.The pedal and parts will be hand fabricated.
    I assume the clutch release shaft lever used on a V8-60 is similar to the larger Flatheads? I need to know the stock bell housing clutch lever length and the approximate leverage ratio of the stock floor pedals. Thanks
     
  2. 36tbird
    Joined: Feb 1, 2005
    Posts: 1,107

    36tbird
    Member

    Measured on a '39 pedal assy, 1 3/8"
    From a '36 throwout bearing lever, 3 3/8"
    Measured with a tape measure while reaching in amongst some other parts by eyes that need a new Rx on glasses.
     
  3. Truckedup
    Joined: Jul 25, 2006
    Posts: 4,430

    Truckedup
    Member

  4. DD COOPMAN
    Joined: Jul 25, 2009
    Posts: 1,121

    DD COOPMAN
    Member

    Essentially a 2.5 to 1 ratio, given the above figures. DD
     

  5. Truckedup
    Joined: Jul 25, 2006
    Posts: 4,430

    Truckedup
    Member

    I built a cable linkage from the measurements given here and the clutch feel is very good!
     

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