66 new yorker, disk to drum conversion.

Brakes, Suspension, Rims and Tires

  1. Old 66 Yorker

    Old 66 Yorker Member

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    So my yorker has drums all the way around and the single pot master...found out last night that if your fluid gets a bit down that's a really bad thing..))

    So..with brakes I'm not afraid of throwing money at it to be better, should I go disk in front only or disk all the way around? I've already changed to 15x7 craiger style American racing rims.

    What do the pros say, is there a kit out there for my big sexy beast?
     
  2. Old 66 Yorker

    Old 66 Yorker Member

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    Yes the title should say drum to disk...I just woke up..), funny thing, you can't edit a thread title.
     
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  3. Ross Wooldridge

    Ross Wooldridge Senior Member FCBO Gold Member

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    There are numerous well informed threads on this very conversion, and is the single best upgrade you can do.

    69 - 73 C body is a bolt in.

    The search function is your friend.
     
  4. mikedrini

    mikedrini Well-Known Member FCBO Gold Member

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    I agree with @Ross Wooldridge (also know around these parts as the Brakemaster) and I converted my fronts to disc and rebuilt the rear drums. Just spend some time on the googlizer or FCBO sifting through and you'll find plenty of drum-disc conversions. Summit may have some kits as well. I say start with the fronts and take it for a drive. If they feel great leave em, if not, convert the backs too. Words of advice: Be sure your Master Cylinder aligns with your goals i.e. Disc/Drum MC or Disc/Disc MC. Be sure you have a proportioning valve. If using a brake booster, better to be safe and go with a Disc Brake Booster although some have managed to get away with a Power Drum Booster.
     
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  5. Ross Wooldridge

    Ross Wooldridge Senior Member FCBO Gold Member

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    Thanks for the kind words.

    DO NOT use a drum brake booster to do the conversion. Use the disc booster. There's a reason the factory did so.
     
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  6. traintech55

    traintech55 Senior Member

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    I did this conversion on my 66 300 before I sold it to Ripinator.
    1. 1969 thru 1972 spindles are the same, 1973 bolts in, but they have a larger wheel bearing, and are getting quite hard to find. The rotors, bearings, and grease seal must be the correct ones for the spindle you get.
    2. The calipers and pads are the same, 1969 thru 1973.
    3. This is a good time to upgrade to the dual master and disk booster, 1967 or 1968. Newer boosters will interfere with your shift linkage if you have a column shift.
    4. I replaced all the brake lines with ones from a 1967 from Inline tube, came pre bent and went right in. I also used an adjustable proportioning valve plumbed into the rear line.
    Good luck, and you won't be sorry.
     
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  7. stubs300

    stubs300 Senior Member

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    What do you really want to do? You could spend the money and do the changes needed for disc. Or you could just get a 67-69 Drum Master cylinder and tap a couple of lines and not have to worry about that problem again. Unless the rest of the system is trashed out? Good Luck
     
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  8. Old 66 Yorker

    Old 66 Yorker Member

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    Summit does have a few different full kits available. The leer kits look to have some good reviews and the Wildwood is much less flattering for a 66. I guess what I'm fishing for is what folks here think of the different kits they have used. Set of fronts with booster and master is about 1.2k usd. For that kind of money ide like to hear story time before parting with the Cash ))
     
  9. Old 66 Yorker

    Old 66 Yorker Member

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    I just talked to leer, they have a relatively new kit for the 66 with factory power
     
  10. traintech55

    traintech55 Senior Member

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    It is your car, but why use a kit made up of mismatched parts when the factory parts are available.
     
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  11. stubs300

    stubs300 Senior Member

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    A lot of those kits require 15" wheels. If you don't have 15 inchers already, are you willing to spend even more to get new wheels & tires so you can drive it?
     
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  12. Old 66 Yorker

    Old 66 Yorker Member

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    20210420_163136.jpg
     
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  13. Old 66 Yorker

    Old 66 Yorker Member

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    15x7 ))
     
  14. Ross Wooldridge

    Ross Wooldridge Senior Member FCBO Gold Member

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    PM sent
     
  15. JEP

    JEP New Member

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    I used the SSBC kit. They gave me 2 passenger caliper brackets, but everything fit fine. Parts went on like advertised. My car is a 66 Newport, and was a power drum car. Also I run the original 14” rims, they required a 1/4 inch spacer so the caliper would not touch the rim
     
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  16. stubs300

    stubs300 Senior Member

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    I used the same for my 66-300 front & rear. I had to use a 5/8 spacer, I could never figure out why when they said it'd fit without problems?