Lower control arm needed?

Brakes for your Classic Mopar

  1. Cope

    Cope Fusing with fire

    Messages:
    2,436
    Likes Received:
    1816
    Joined:
    Oct 20, 2009
    Location:
    San Jose, Ca.
    Local Time:
    9:22 PM
    I'm swapping my drums on my 71 dart to 1973 disks.

    Do I need to swap the LCA, or can I use my original ones?
     
  2. j par

    j par Well-hung Member

    Messages:
    11,183
    Likes Received:
    4180
    Joined:
    Jul 2, 2014
    Location:
    Portland Oregon
    Local Time:
    7:22 PM
    Typically you need the disc brake spindles but I think Dr diff sells a $20 shim to make them work. it's what I would have done had I not had the 73 discs already.
     
  3. Cope

    Cope Fusing with fire

    Messages:
    2,436
    Likes Received:
    1816
    Joined:
    Oct 20, 2009
    Location:
    San Jose, Ca.
    Local Time:
    9:22 PM
    I orders the whole shebang (all the parts, spindles, LCA, UCA, Everything) from white punk nitro. I just rebuilt my front end like a year ago, so if i dont have to clean, paint and install now bushings in the 73 LCA that would be nice.
     
    • Like Like x 1
    • j par

      j par Well-hung Member

      Messages:
      11,183
      Likes Received:
      4180
      Joined:
      Jul 2, 2014
      Location:
      Portland Oregon
      Local Time:
      7:22 PM
      Okay yellow rose write your check! LOL:poke:
       
      • Like Like x 1
      • Cope

        Cope Fusing with fire

        Messages:
        2,436
        Likes Received:
        1816
        Joined:
        Oct 20, 2009
        Location:
        San Jose, Ca.
        Local Time:
        9:22 PM
        I take pay pall....
        ;)

        So...... do I need to swap the LCA?
         
        • Like Like x 1
        • j par

          j par Well-hung Member

          Messages:
          11,183
          Likes Received:
          4180
          Joined:
          Jul 2, 2014
          Location:
          Portland Oregon
          Local Time:
          7:22 PM
          Also it doesn't hurt to get the proper setup and have everything done, I hear that.
          So not yellow rose he needs to get his lazy ass going.
          I was out on the street today testing my yellow rose killer cam and it's a whole heck of a lot of fun with that Stroker. Just bought around the corner in second gear at about 1 grand and stab it and those dual quads just ignite the back tires!
          No
           
          • Like Like x 1
          • 72bluNblu

            72bluNblu FABO Gold Member FABO Gold Member

            Messages:
            9,037
            Likes Received:
            3010
            Joined:
            Nov 28, 2008
            Location:
            NorCal
            Local Time:
            7:22 PM
            The LCA’s are the same unless they have sway bar tabs.
             
            • Thanks! Thanks! x 1
            • 72Dart6pack

              72Dart6pack Harder Better Faster Stronger.

              Messages:
              2,784
              Likes Received:
              1821
              Joined:
              Feb 1, 2016
              Location:
              Roseville Michigan
              Local Time:
              10:22 PM
              No LCA will work if you don't care about a sway bar.
               
              • Like Like x 1
              • j par

                j par Well-hung Member

                Messages:
                11,183
                Likes Received:
                4180
                Joined:
                Jul 2, 2014
                Location:
                Portland Oregon
                Local Time:
                7:22 PM
                Oh now I remember it's the ball joints. The drum brake control arm has a smaller diameter ball joint so you need the 73 and later bigger ball joint to go into the bigger spindle. That's where you get the Shim from Dr diff that makes your small ball joint fit the bigger hole for the disc brake spindle.
                 
              • Cope

                Cope Fusing with fire

                Messages:
                2,436
                Likes Received:
                1816
                Joined:
                Oct 20, 2009
                Location:
                San Jose, Ca.
                Local Time:
                9:22 PM
                No sway bars, drag car. In fact I just threw front and rear sway bars in the scrap bin....

                Just to be clear, only the upper ball joint is the large one right?
                I can use my old 71 LCA, correct?
                 
              • 72Dart6pack

                72Dart6pack Harder Better Faster Stronger.

                Messages:
                2,784
                Likes Received:
                1821
                Joined:
                Feb 1, 2016
                Location:
                Roseville Michigan
                Local Time:
                10:22 PM
                YES!
                 
                • Agree Agree x 1
                • Cope

                  Cope Fusing with fire

                  Messages:
                  2,436
                  Likes Received:
                  1816
                  Joined:
                  Oct 20, 2009
                  Location:
                  San Jose, Ca.
                  Local Time:
                  9:22 PM
                  Ok thanks!

                  Lowers will stay on the car. That will save me some time.
                   
                • 72bluNblu

                  72bluNblu FABO Gold Member FABO Gold Member

                  Messages:
                  9,037
                  Likes Received:
                  3010
                  Joined:
                  Nov 28, 2008
                  Location:
                  NorCal
                  Local Time:
                  7:22 PM
                  Exactly. I don’t know why j par keeps talking about upper ball joint spacers since you asked about the lower control arm.

                  The lower ball joints have different bolt spacing on the earlier drum spindles, but you just buy a disk brake lower ball joint, no need to change the LCA at all.
                   
                  • Agree Agree x 1
                  • Cope

                    Cope Fusing with fire

                    Messages:
                    2,436
                    Likes Received:
                    1816
                    Joined:
                    Oct 20, 2009
                    Location:
                    San Jose, Ca.
                    Local Time:
                    9:22 PM
                    I know Mancini sells the ball joint sockets, anyone know of another vendor or some other way of R&R ball joints with out the socket?

                    I think the last one I bought (small ball joint socket) was like 70 bucks and took forever to arrive.
                     
                  • 72bluNblu

                    72bluNblu FABO Gold Member FABO Gold Member

                    Messages:
                    9,037
                    Likes Received:
                    3010
                    Joined:
                    Nov 28, 2008
                    Location:
                    NorCal
                    Local Time:
                    7:22 PM
                    For the large upper ball joints you can get them for like $30 now from proforged.

                    Proforged Dodge A/B/E-Body Ball Joint Removal Tools 124-10001
                     
                    • Thanks! Thanks! x 1
                    • inertia

                      inertia Well-Known Member

                      Messages:
                      3,088
                      Likes Received:
                      425
                      Joined:
                      Feb 4, 2011
                      Location:
                      Victoria B.C. Canada
                      Local Time:
                      7:22 PM
                    • j par

                      j par Well-hung Member

                      Messages:
                      11,183
                      Likes Received:
                      4180
                      Joined:
                      Jul 2, 2014
                      Location:
                      Portland Oregon
                      Local Time:
                      7:22 PM
                      you're correct I knew there's something you had to do if someway the conversion to make it easier and I figured if I just babbled some stupid crap out someone like yourself would come in and make sure it was corrected thank you.
                       
                    • j par

                      j par Well-hung Member

                      Messages:
                      11,183
                      Likes Received:
                      4180
                      Joined:
                      Jul 2, 2014
                      Location:
                      Portland Oregon
                      Local Time:
                      7:22 PM
                    • inertia

                      inertia Well-Known Member

                      Messages:
                      3,088
                      Likes Received:
                      425
                      Joined:
                      Feb 4, 2011
                      Location:
                      Victoria B.C. Canada
                      Local Time:
                      7:22 PM
                      Admit it, you're bored, and just trying to beat Memike's post count . lol
                      .
                       
                      • Like Like x 1
                      • j par

                        j par Well-hung Member

                        Messages:
                        11,183
                        Likes Received:
                        4180
                        Joined:
                        Jul 2, 2014
                        Location:
                        Portland Oregon
                        Local Time:
                        7:22 PM
                        Actually I use my phone most the time and only a few times do I actually turn my phone sideways and can see the post counts and stuff like that.
                        Usually the people who talk about it are the ones who are worried about it...?
                         
                        • Like Like x 1
                        • inertia

                          inertia Well-Known Member

                          Messages:
                          3,088
                          Likes Received:
                          425
                          Joined:
                          Feb 4, 2011
                          Location:
                          Victoria B.C. Canada
                          Local Time:
                          7:22 PM
                          I try to keep it brief, accurate and pertinent.
                          "Just the facts ma'am, just the facts". lol
                          Cheers.
                           
                          Last edited: Sep 18, 2018
                          • Like Like x 1
                          • j par

                            j par Well-hung Member

                            Messages:
                            11,183
                            Likes Received:
                            4180
                            Joined:
                            Jul 2, 2014
                            Location:
                            Portland Oregon
                            Local Time:
                            7:22 PM
                            I will admit that I'm bored most of the time. But trying to get the post count? LOL
                             
                          • halifaxhops

                            halifaxhops It's going to get stupid around here! FABO Gold Member

                            Messages:
                            47,966
                            Likes Received:
                            16089
                            Joined:
                            Jan 20, 2014
                            Location:
                            CENTRURAL, PA
                            Local Time:
                            10:22 PM
                            Autozone has them to lend.
                             
                            • Like Like x 1
                            • Thanks! Thanks! x 1
                            • j par

                              j par Well-hung Member

                              Messages:
                              11,183
                              Likes Received:
                              4180
                              Joined:
                              Jul 2, 2014
                              Location:
                              Portland Oregon
                              Local Time:
                              7:22 PM
                              oh I forgot to mention this always drive people nuts but I've never used anything but a pair of old channel locks on those.
                               
                            • 72bluNblu

                              72bluNblu FABO Gold Member FABO Gold Member

                              Messages:
                              9,037
                              Likes Received:
                              3010
                              Joined:
                              Nov 28, 2008
                              Location:
                              NorCal
                              Local Time:
                              7:22 PM
                              The factory torque spec for the upper ball joint is 125 ft/lbs. You're not going to get anywhere close to that with a set of channel locks.

                              But I'm sure that was just a vague suggestion from the engineers, probably no reason for it. :rolleyes:
                               
                              • Like Like x 2
                              1. This site uses cookies to help personalize 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.