1. dukeboy_318

    dukeboy_318 Well-Known Member

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    On my 1964 Polara, I have no brake lines, the hard lines. Anyone know the diameter and fitting sizes I need to get? I'm just going with the budget route and bending/running my own lines.
     
  2. 1967coronet440

    1967coronet440 Well-Known Member

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    IIRC the line size is 5/16, I have lines and fittings at home and can confirm once I get there. Look into nicop alloy lines, much easier to work with and won’t corrode ever.
     
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    • Bryon

      Bryon Member

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      Not to try and thread jack but I’m in the same boat if anyone knows the line sizes for a 67 GTX
       
    • Rockland71GTX

      Rockland71GTX Well-Known Member

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      5/16" is just over a quarter inch, TOO big. 3/16" should be the size, and as mentioned go with the nickel copper lines! You'll be doing yourself a huge favor as these are super easy to work with and they don't rust out.
       
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      • 1967coronet440

        1967coronet440 Well-Known Member

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        Thanks couldn’t remember if it was 5/16 or 3/16
         
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        • Fran Blacker

          Fran Blacker FBBO Gold Member FBBO Gold Member

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          Think with a single master 1/4" to block on frame rail then 3/16" to all wheel cylinders . 67 Dual master cylinder 5/16" everything, fittings on master different sizes.
           
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          • dukeboy_318

            dukeboy_318 Well-Known Member

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            I've swapped the single to a 73 A body master.
             
          • Fran Blacker

            Fran Blacker FBBO Gold Member FBBO Gold Member

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            I've done the opposite twice. Joking, my post was meant to confirm what I remember. Would think that to supply 4 5/16" lines more volume?
             
          • dukeboy_318

            dukeboy_318 Well-Known Member

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            I'm installing an adjustable proportioning valve so I can tune it regardless. I went ahead and got 3/16 diameter tubing. it comes with multiple sized fittings so hopefully it'll work.
             
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            • 66Satellite47

              66Satellite47 FBBO Gold Member FBBO Gold Member

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              Check with the those that know more than me, the drum brakes use the smaller 3/16 & discs use the larger?
               
            • khryslerkid

              khryslerkid FBBO Gold Member FBBO Gold Member

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              It's all 3/16" tubing.
               
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