Disc brake conversion recommendations

Brakes for your Classic Mopar

  1. PWdart

    PWdart Member

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    Just wondering who's using what to convert from front drum to power disc. Good experience? bad experience? 2 inch drop spindles? Or should I just find the factory stuff and maybe use a dual power booster just to save some room under the hood? This is for a 69 Dart
     
  2. Lonnie Leach

    Lonnie Leach Duster/ Valiant

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    I just put a pair of 73 a body's spindles on my 69 and used 73 caliper and hardware
     
  3. Lonnie Leach

    Lonnie Leach Duster/ Valiant

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    You will have to change the Master cyl to a 80's dodge ram larger bore for disc..and the upper A arms for a 73 a body
     
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    • hemi71x

      hemi71x FABO Gold Member FABO Gold Member

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    • 72bluNblu

      72bluNblu FABO Gold Member FABO Gold Member

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      Call DoctorDiff. He sells everything you need, the ‘73 up disks are the way to go. Not a lot of donors left running around though, and then you have to rebuild all of it anyway.

      No need to run power disk either if you use a 15/16” master cylinder. Way better pedal feel, and it’s really not that hard of a pedal with the right size MC.


      Larger bore master cylinder is a terrible idea. 15/16” is the way to go.

      That’s good set up if you want to stay SBP.

      Personally I wouldn’t bother with staying SBP I was already swapping spindles, more hassle than anything. But that’s just me.
       
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      • Dana67Dart

        Dana67Dart Like a fine wine, only getting better with age! FABO Gold Member

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        Go stock. No booster needed.
         
      • Car Nut

        Car Nut Mopar Master

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        • Agree Agree x 5
        • dano

          dano Evil Handy Man

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          Depends. Are you looking to go LBP or keep the small? How do you intend to drive the car? What are your expectations?
           
        • 72Dart6pack

          72Dart6pack Harder Better Faster Stronger.

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          Photo is all Dr Diff parts. Nuff said. :)

          20170704_220653.jpg
           
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          • dodge71demon

            dodge71demon Well-Known Member

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            What part of Ohio are you from
             
          • Lonnie Leach

            Lonnie Leach Duster/ Valiant

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            Well that's what is on mine and works well for me..
            Disagree if you like
             
          • PWdart

            PWdart Member

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            near Cleveland
             
          • PWdart

            PWdart Member

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            Streetcar with some dragstrip passes. Just was concerned about the fade with the drum brakes had a bad experience with one of my friends cars. Disc also seem to be better for a left right balance
             
          • PST

            PST Marketing Manager FABO Vendor

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            We offer a variety of conversion kits for both power or manual set ups. We offer a kits that converts to the 73-76 setup or kits that retain the stock drum brake spindles from wilwood or leeds brakes and as a member of the forum we offer 10% off orders of $200 or more and free shipping. Here is a quick link to the conversion kits on our site.

            PST | Disc Brake Conversion | Disc Brake Kit | Disc Brakes

            Thanks
            James From
            PST
             
          • PWdart

            PWdart Member

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            thank you. Nice kits. Are the rotor replacements available at a typical parts store?
             
          • PST

            PST Marketing Manager FABO Vendor

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            Yes depending of the kit we can provided you the replacement part numbers

            Thanks
            James From
            PST
             
          • PWdart

            PWdart Member

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            Excellent. Future parts availability is important
             
          • mbaird

            mbaird mbaird

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            I went with 73 A body disc up front and Cherokee discs in the rear on my Fastback.
            Stops with little effort..... but honestly I dont drive fast enough to need them .

            The 69 340 Swinger is staying stock with drums all around. I did use smaller diameter master though. Havent driven it yet... we shall see how it stops.
             
          • AndyF

            AndyF Well-Known Member

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            I went with Viper brakes on my Duster.
            DSC_3985 (Large).JPG DSC_3613 (Large).JPG
             
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            • Jimacuda

              Jimacuda Well-Known Member

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              72 Demon...FMJ body front discs and late B 11" rear drums w 15/16" master.
              No power assist.
              Works beautifully, stops fast and it's consistent/predictable.
               
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              • Lonnie Leach

                Lonnie Leach Duster/ Valiant

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                What size bore u think a 80 non power is? has 15/16 bore
                 
              • BigBlockMopar

                BigBlockMopar BigBlockMember

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                There's also the brake-pedal ratio to be considered.
                IMO, a manual system has a numerical larger (underdash) brake-pedal ratio than a power brake system.

                I run a 15/16 MC on a ('73 factory) power brakepedal system.
                2.75" ø C-body calipers.
                 
              • Gregor

                Gregor Well-Known Member

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                I have a 70 Dart and am planning on doing a front disc upgrade in the spring. I too live in Cleveland. Maybe we share notes on this project. I want to keep my 14 inch sbp wheels for the stock look.
                 
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