1. Mattias

    Mattias Well-Known Member

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    Am I having the right type of knuckles?

    When I read the Disc-o-tech it says the ”right” type of knuckles have a height of 4-9/16. It’s a little bit difficult to measure but I get mine to be 4-7/8. Do I have the -73 and up b-body knuckles?

    83D28243-6CC9-4CF1-8BF9-5A581ACC6255.png 8601D45D-54E3-4709-A99D-3617B7FF3E64.jpeg
     
  2. dvw

    dvw Well-Known Member

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    • Thanks! Thanks! x 1
    • Mattias

      Mattias Well-Known Member

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      Thanks for input!
      So, you mean I should use the knuckles that I have? The disc-o-tech article is stating, with exclamation mark, that these should not be used.
      However, I would be happy if they could be used with good result...
       
    • R/T Boy 67

      R/T Boy 67 Well-Known Member

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      It is a controversial subject, but there are many cars running the taller knuckles. Do your own research and be happy!
       
    • Kern Dog

      Kern Dog FBBO Gold Member FBBO Gold Member

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      The man that wrote the "Disc-O-Tech" article is a smart man but he was just plain wrong in his condemnation of the later model steering knuckles. His contention was that the taller knuckle would result in excessive angles of the upper ball joint leading to failure. THis has been proven wrong by many other sources.
       
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      • TN Mopar

        TN Mopar Well-Known Member

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        I agree
        He also was not correct in his conclusions on how to deal with the early B-Body front anti-sway bars
        There are correct and easy ways to rear mount the calipers and retain the stock sway bars
        Using FMJ calipers that were designed to be rear mounted is one Banjo fittings can be another
         
      • Mattias

        Mattias Well-Known Member

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        Thanks for your answers!
        I guess I will save some money and use the knuckles that I have...
        /M
         
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        • dvw

          dvw Well-Known Member

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          As stated above, used plenty of the tall spindles for conversions. My back ground? I was a suspension tech for over 30 years. Probably done 5000+ alignments. Plenty of repeat business. Never had an issue. The "over center" concern is from someone who never looked at the actual amount of travel. Same with the geometry. There's nothing critical there either. I'm sure you seen plenty of cars in a wheel stand with the wheels all angled in at the top. Take a look at the two pictures. One car has tall knuckles, one doesn't. Can you tell which is which? The camber curve looks good in compression as well.
          Doug
          64 in D gas trim.jpg Scott at Quaker.jpg
           
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          • Mattias

            Mattias Well-Known Member

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            Thanks Doug!
            I understand that you are sitting on quite a lot of experience from this matter...

            Do you have any suggestion if I decide to go the ”dropped spindle” way? Are there different manufacturers with different quality and/or steering geometry?
             
          • dvw

            dvw Well-Known Member

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            I've never used one. However if just the spindle itself is dropped the geometry shouldn't change.
            Doug
             
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