Disc Brake Conversion

Suspension, Steering and Brakes

  1. Gene Martin

    Gene Martin New Member

    Messages:
    3
    Likes Received:
    Joined:
    May 17, 2020
    Location:
    Mississippi
    New member from Mississippi.
    Just acquired a 69 RR, 383, automatic. Considering a disc brake conversion on the front end.
    I would appreciate any thoughts/suggestions on this.

    Thanks
     
    Russ69Runner likes this.
  2. Rapid Transit

    Rapid Transit Just A Traveler In Time

    Messages:
    126
    Likes Received:
    Joined:
    Feb 9, 2015
    Location:
    Georgia
    Power brakes?
    Do you have lower control arms already?
    DoctorDif.com is a good source.
    Since you probably will have to buy rotors and caliper adapters anyway, go with the larger disk.
    However, 14 inch rims will not clear
    I tired the smaller rotors with a manual braked B body and it wasn't good.
    Larger rotors and his master made all the difference.
    I would go ahead and get the adapter which ever way you go for an aluminum master cylinder.
    Power or manual.
    I've used original 70s A body combination valves with good results.
    The ones Inline tube sells MAY have a problem.
    I tried one and found it was missing a drilled bypass passage which caused "chatter" in the lines.
    That's the only thing I could figure.
     
    Gene Martin likes this.
  3. RAINMANYEH

    RAINMANYEH Well-Known Member

    Messages:
    1,011
    Likes Received:
    Joined:
    Sep 13, 2015
    Location:
    Birmingham, AL
    Classic Industries, jegs, year one, summit racing have several options. You could check into the OE disc brakes from early 70s era.
     
    Gene Martin likes this.
  4. Anthony69Runner

    Anthony69Runner Well-Known Member

    Messages:
    60
    Likes Received:
    Joined:
    Mar 4, 2018
    Location:
    Franklin, New York
    Dr.Diff is the way to go. I’m doing a front and rear disc conversion now. He has great support, will answer all your questions.
     
    Gene Martin and Russ69Runner like this.
  5. dmartin

    dmartin Well-Known Member

    Messages:
    901
    Likes Received:
    Joined:
    Aug 30, 2013
    Location:
    Georgia
    Welcome from the peach state with the wave, if you are going to use the old style upper and lower control arms find a salvage yard that has the front spindle and brake calipers and rotors all together from a 85 Chrysler Fifth Avenue I promise every thing will bolt right up but you have to buy the rubber brake hoses for the Fifth Avenue cause the road runner brake hoses will not match up, that’s what I have on mine works great
     
    Russ69Runner and Plybeep68 like this.
  6. Plybeep68

    Plybeep68 Acceleratii Incredibus

    Messages:
    148
    Likes Received:
    Joined:
    Jul 17, 2017
    That's pretty much what I did to my 68,, robbed everything off a late 70's Lebaron
     
    Russ69Runner likes this.
  7. Russ69Runner

    Russ69Runner Well-Known Member

    Messages:
    5,305
    Likes Received:
    Joined:
    Aug 4, 2016
    Location:
    Lake Wales Fl.
    That has to be cheaper than buying those expensive one that they sell now day's and have heard that they give you problems trying to install.
     
  8. Gene Martin

    Gene Martin New Member

    Messages:
    3
    Likes Received:
    Joined:
    May 17, 2020
    Location:
    Mississippi
    Thanks--Will explore original disc brake option as it was a factory option in 1969.
     
    Russ69Runner likes this.
  9. Gene Martin

    Gene Martin New Member

    Messages:
    3
    Likes Received:
    Joined:
    May 17, 2020
    Location:
    Mississippi
    Thanks a bunch--very helpful suggestions.
     
    Russ69Runner likes this.
  10. Rapid Transit

    Rapid Transit Just A Traveler In Time

    Messages:
    126
    Likes Received:
    Joined:
    Feb 9, 2015
    Location:
    Georgia
  11. 69hemibeep

    69hemibeep Sponge Bob Square Wheels

    Messages:
    21,009
    Likes Received:
    Joined:
    Sep 10, 2008
    Location:
    AZ Desert,
    Your Allpar article says to stay away from the F/J/M body spindle as they are a little taller
     
    Russ69Runner likes this.
  12. quikbird

    quikbird Well-Known Member

    Messages:
    2,698
    Likes Received:
    Joined:
    Mar 1, 2014
    Location:
    columbus, ohio
    Never had a problem with the stainless steel brake kit I used, bolted right up.
     
    Russ69Runner likes this.

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.