Help disk brake options

Brakes, Steering & Suspension

  1. greenmachine

    greenmachine Well-Known Member

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    Hi all
    I've almost got my front end together and it's time for disk brake swap. I've talked to Cass and I'm looking at around 800 for what I need (11.75, slotted, plus master, dist. Valve etc.).
    My question is, if I went with the magnum force 2" dropped spindles can I just piecemeal the rest of the parts from summit? 78 cordoba disks, calipers, etc. Has anyone done this cheaper than just buying a ready to go kit? I searched the disco tech article but it won't come up. I appreciate the help.
     
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    • Fran Blacker

      Fran Blacker FBBO Gold Member FBBO Gold Member

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      I did a drum to disc conversion in 2001 $560 ish. Mostly new parts, used spindles and caliper adapters. It was the conversion in Mopar Action mag. 11.75 rotors and slider calipers. Sent a picture to a mopar junk yard with a picture of the caliper adapters for both sized sliders and marked pictures so I didn't get wrong ones for smaller rotors. They cost me $90 then. On ebay when you see them $200. I'd do like I did send pic's to a junk yard. I don't know if I can find the article. If your interest disc.jpg disc1.jpg disc2.jpg disc3.jpg disc 4.jpg ed I'd look. There are another type of Caliper adapter that are more common I'm not up to speed what they came from. There are a ton of threads about this you should search for drum to disc in the search box.
       
    • Fran Blacker

      Fran Blacker FBBO Gold Member FBBO Gold Member

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    • ChargerM440

      ChargerM440 Well-Known Member

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      I used the Scarebird front disc adapter plates on my Charger. You'll have to shop around and buy the parts for the kit yourself, but it's pretty straight forward. The kit calls for rotors from a 70 Ford, calipers from a late model Dodge 1/2 ton truck, hoses from a Camaro, and a master cylinder from a '72 Cuda. They'll send you a list of parts and install instructions if you're interested, or I could post them here if you want. Most everything can be bought at your local parts store which was one of the reasons I enjoy having this conversion. The only thing I had to buy online was the brake hoses because I wanted braided stainless. Overall, I'm happy with the results and the Charger has plenty of stopping power. Good Luck!

      https://scarebird.com/index.php?route=product/product&path=64&product_id=101
       
      Last edited: Jan 9, 2017
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      • ChargerM440

        ChargerM440 Well-Known Member

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        Here is a quick rundown of the major items I pieced together for my disc swap:

        Scarebird Kit: $200 (after the tax and shipping)
        Rotors: $86 (Summit)
        Calipers: $42
        Bearings: $25
        Master Cylinder $26
        Hoses: $42 (eBay)

        The only thing left to buy are brake pads and you can spend anywhere from $20 for OEM replacements up to hundreds of dollars for extreme duty pads. So, realistically you're looking at around $500 after you factor in taxes, shipping, and a couple core costs if you don't have anything to turn in. Overall the kit was very easy to install and I'm happy with the performance too.
         
        Last edited: Jan 9, 2017
      • Fran Blacker

        Fran Blacker FBBO Gold Member FBBO Gold Member

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        Looks like a nice alterative. You still have to buy a bunch of parts. If you have a friendly parts source all the better. I think you'll need to budget another $400 to $500 for the other parts. Maybe ChargerM440 can give you an idea what it costs. My concern about some complete kits is replacement parts. Do you have to go back to them and are they in business. If you race I'd go with the higher quality mfg's.
         
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        • ChargerM440

          ChargerM440 Well-Known Member

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          Fran brings up a good point about the aftermarket and these all in one kits. You never know what might be difficult or sometimes near impossible to find down the road.
           
        • Fran Blacker

          Fran Blacker FBBO Gold Member FBBO Gold Member

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          Were those prices per rotor and per caliper?
          One thing Greenmachine said he bought 2" dropped spindles for disc's will those scarebird caliper adapters work on the dropped spindles.
           
        • Riverdawg

          Riverdawg FBBO Gold Member FBBO Gold Member

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        • ChargerM440

          ChargerM440 Well-Known Member

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          The rotors are $42.97 each
          Summit Racing Part Number:BEN-PRT1016

          The calipers are $20.99 each at Autozone.
          Part Number: C554 (left)
          Part Number: C555 (right)

          Edit: Also, you can usually find a 5-10% off discount coupon online for a lot of parts stores. Not a huge deal, but enough to negate the taxes.
           
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          • greenmachine

            greenmachine Well-Known Member

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            I appreciate all the responses. Yea, I think I will just piece together a kit coupled with 2" dropped spindles (based on 73 and up mopars), 78 cordoba 11.75 rotors and the matching calipers, bearings, etc. with 440.00 cost of the spindles I will probly be 1000. All in.
             
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            • SlinktRR

              SlinktRR Well-Known Member

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              • 71SandbugCharger

                71SandbugCharger FBBO Gold Member FBBO Gold Member

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                Well, I have a printout of the discotech article, but I also had converted it to a spreadsheet for locating and acquiring the parts.
                Key number Description Qty. Mopar P/N Aftermarket brand, P/N Original Application Notes, sources
                1 Knuckle, L 1 3402629* Master Power ‘73-74 E- body, disc- equipped ‘73-76 A- body Junkyard, or new repros from Master Power Brakes, Inc
                2 Knuckle, R 1 3402628* Master Power Same Same
                3 Rotor, HD, 11.75" unicast 2 4126545* EIS D17038 ‘76-‘78 B- body police, ‘79-up R- body police New suggested
                4 Caliper, L 1 3744481* EIS RC6066 ‘70-72 B- body; ‘70- 74 E-body Pin type. See text for slider info.
                5 Caliper, R 1 3744480* EIS RC6065 Same Same
                6 Caliper adapters 2 3880557* _ ‘76-‘78 B- body w/pin- type calipers Junkyard. See text for slider- type info.
                6A Caliper adapters - opt. 2 3580839* - ‘70-74 E- body; ‘70- 75 B-body For 10.87" rotors and 14-in. wheels
                3461977*
                7 Adapter bolts 2 6030952 _ Most disc cars Use new
                8 Caliper pins 4 4094147* EIS H5017 Any Mopar w/pin calipers Inspect used ones carefully
                2-pr.
                9 Pads 1 set 4049700* FMSI D39 Any Mopar w/pin calipers Race compound available - see photos
                (semi- met., pin- type)
                10 Splash shield, L 1 3880519* - Most ‘73-up Mopars Omit for HD or race use
                11 Splash shield, R 1 3880518* - Same Same
                12 Seal, splash shield 2 2944704 - Same Same
                13 Hyd. hose 2 3766616* - ‘70-72 B,E- body Use new. This number is for pin- type only.
                14 Hose seal washer 2 6030084 - Same Same
                15 Inner wheel bearing 2 5252823 Bower/BCA A-17 All ‘73-up disc Mopars Re-use outer bearing, washer, nut, nut lock
                16 Seals 2 3580723 National 5121 Same -
                 
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                • PRND21

                  PRND21 FBBO Gold Member FBBO Gold Member

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                  Mopar Action website is gone as far as I can tell. I'm glad I printed the Disco-Tech article years ago. I have this setup on my 65 Belvedere, works fine with the stock 10" rear drums.
                   
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                  • Fran Blacker

                    Fran Blacker FBBO Gold Member FBBO Gold Member

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                    These are the two caliper adapters. I bought my adapters caliper adp.PNG from a junkyard in I think in Minnesota. I sent this picture to them with the one I wanted circled. 10 days later got them. Forgot I have a disc with Mopar Action Tech articles. These are the one part I think you need pictures for part numbers won't do.
                     
                    Last edited: Jan 12, 2017
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                    • 500Hardtop

                      500Hardtop Active Member

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                      This is a helpful thread for me also,thanks
                       
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