CalTracks - Rear Leaf Spring Question

Suspension, Steering and Chassis

  1. Cazbah362

    Cazbah362 Well-Known Member

    Messages:
    841
    Likes Received:
    66
    Joined:
    Nov 7, 2011
    Location:
    Nevada
    Local Time:
    9:22 PM
    I need to install new leaf springs in the rear of my 71 Demon, 8.75, 727 and 5.7 Gen III swap. I am looking at using the Caltracks single mono leaf. I like the idea of adjustable ride height, loss of 28 lbs and vehicle stance. I have priced them and they are roughly $180 more than a pair of MP leafs (Summit).

    My rear has a DocDiff 1/2 shackle offset

    Has anyone used used only the springs without the bars? Pro's, Con's and insights would be greatly appreciated.

    Car may see track time, but really a cruiser, some spirited driving and the occasional ingestion of tuners or other roadworthy prey.

    Thanks
     
  2. roccodart440

    roccodart440 Well-Known Member

    Messages:
    5,570
    Likes Received:
    4577
    Joined:
    Apr 19, 2010
    Local Time:
    10:22 PM
    I haven't, but doubt a mono leaf will fair well without a traction device. YOu could try it and add the bars later.
     
    • Agree Agree x 1
    • sabre67

      sabre67 FABO Gold Member FABO Gold Member

      Messages:
      906
      Likes Received:
      208
      Joined:
      Jan 9, 2015
      Location:
      British Columbia,Canada
      Local Time:
      7:22 PM
      :popcorn:
       
    • 33IMP

      33IMP Well-Known Member

      Messages:
      254
      Likes Received:
      269
      Joined:
      Jul 3, 2020
      Location:
      Taxifornia, soon 2b arizona
      Local Time:
      7:22 PM
      Call caltracs tech line. I'm betting they will advise against just using the monoleafs. I would agree.
      If you don't want to use bars, I would suggest mopar hd springs, or maybe ss if you want the rear up a little.
       
    • TT5.9mag

      TT5.9mag Two atmospheres are better than one

      Messages:
      500
      Likes Received:
      500
      Joined:
      May 5, 2016
      Location:
      So cal
      Local Time:
      7:22 PM
      Wasn’t it common a few years ago (10-15) for guys to use the mono leaf off of some minivan or something? I remember reading about it in one of the rags.
       
    • roccodart440

      roccodart440 Well-Known Member

      Messages:
      5,570
      Likes Received:
      4577
      Joined:
      Apr 19, 2010
      Local Time:
      10:22 PM
      If you go SS springs, buy 2 lefts or 2 rights or else they sit a little crooked
       
    • Cazbah362

      Cazbah362 Well-Known Member

      Messages:
      841
      Likes Received:
      66
      Joined:
      Nov 7, 2011
      Location:
      Nevada
      Local Time:
      9:22 PM
      Rocco, thanks - when buying the two lefts or rights is there any issues doing this? and which side is the lower side? I do like the lower rear stance, not the "stink bug." Which would you use, Summit picture included. why?

      Also, yes called Caltracks - non-committal, they say ANY spring without a traction device is going to get spring "wrap." So.... buy the entire package or not, that is the next question or just MMP springs.

      Screen Shot 2020-09-15 at 11.03.17 AM.png
       
      Last edited: Sep 15, 2020
    • roccodart440

      roccodart440 Well-Known Member

      Messages:
      5,570
      Likes Received:
      4577
      Joined:
      Apr 19, 2010
      Local Time:
      10:22 PM
      Left (driver side is lower)
       
    • rumblefish360

      rumblefish360 So close, yet so far away FABO Gold Member

      Messages:
      38,821
      Likes Received:
      10405
      Joined:
      Jun 21, 2005
      Location:
      New York, on a Island
      Local Time:
      10:22 PM
      But it’s still (stink bug) high! LMAO
       
    • roccodart440

      roccodart440 Well-Known Member

      Messages:
      5,570
      Likes Received:
      4577
      Joined:
      Apr 19, 2010
      Local Time:
      10:22 PM
      I lowered mine with RMS inboard mounts.

      lowering blocks are ok too with caltracs because the springs are incapable of wrapping
       
    • racerjoe

      racerjoe Well-Known Member

      Messages:
      308
      Likes Received:
      356
      Joined:
      Aug 14, 2013
      Location:
      Louisiana
      Local Time:
      9:22 PM
      Caltrac springs are pretty stiff as is the SS springs. Unless you plan on drag racing often, I'd skip the Caltrac springs. Pete Bergman at Bergman Autocraft sells springs, you may want to chat with him. I have the Hotchkis springs, and while I was concerned initially about them being too low and also not having a strong enough front segment, I'll have to say I'm very happy with them. Ride quality is great, and I don't get any wheel hop (I have a pinion snubber). If you drive your car on the road a lot, do yourself a favor and look for springs that aren't drag racing springs.
      Avoid SS springs like the plague!
       
    • Cazbah362

      Cazbah362 Well-Known Member

      Messages:
      841
      Likes Received:
      66
      Joined:
      Nov 7, 2011
      Location:
      Nevada
      Local Time:
      9:22 PM
      All,
      Thanks, seems like there is a mixed bunch of opinions and views. Again, really not interested in the MP springs other than the price.

      Racerjoe, yes, I have talked with ESPO and Bergman and Calvert, they all say the same thing, you will get axle wrap. To me this is a disclaimer and a CYA thing, and I get it. Your insight sounds from experience, and I appreciate that, thank you.

      I have used ESPOs (70 Cuda w/470 and Gen III), Caltracks (71 BB auto) and Hotchkis (68 GTX BB/4 speed) in the past, all have done well. But I have not used only the Caltracks without the bars.

      Right now I am leaning more towards ESPO's. They have done well for me in the past, and they are about $330 shipped. A tad more than the MP's (about $40), but no stink bug and crazy stiff ride, and unfortunately not a drop in 30 lbs of weight or newer technology.

      Still pondering
       
      • Like Like x 1
      • racerjoe

        racerjoe Well-Known Member

        Messages:
        308
        Likes Received:
        356
        Joined:
        Aug 14, 2013
        Location:
        Louisiana
        Local Time:
        9:22 PM
        I used to drag race often and started with the SS springs- I just hate the look and the car rode like a 1 ton truck. When I got more serious about drag racing, meaning that was the only thing I did with the car, I switched to Caltracs. At that time I didn't care how stiff it was because I was only driving 1/4 mile at a time. I did a major rebuild after that with the intent to make the car a "drive anywhere, handle decent" type car. I started with the MP "circle track" springs- those were a nightmare and bent almost immediately- (details on that in my build thread). I landed on the Hotchkis and while not cheap they are good. I have no expience with EPSO but I have heard people discuss on them on here.
         
        • Thanks! Thanks! x 1
        • MomsDuster

          MomsDuster Well-Known Member

          Messages:
          4,165
          Likes Received:
          4063
          Joined:
          Apr 17, 2016
          Location:
          Vacaville Ca
          Local Time:
          7:22 PM
          Your profile says Nevada, what part? I’m in Nor cal. I just pulled a set of Hotchkis springs from my 71 Duster. Approximately 2k miles on them. I went with SS springs. May be able to meet half way or something. PM if you’re interested.
           
        • Cazbah362

          Cazbah362 Well-Known Member

          Messages:
          841
          Likes Received:
          66
          Joined:
          Nov 7, 2011
          Location:
          Nevada
          Local Time:
          9:22 PM
          Momsduster - Thanks, but I pulled the trigger on the ESPO's today. I live south of Reno, if your in the area or heading to the area, let me know.

          Really, the Hotchkis are almost as much as the ESPO's

          Thanks for the offer
           
          • Like Like x 1
          • RustyRatRod

            RustyRatRod Bla de blizhibliz de blatde blizi bla bla FABO Gold Member

            Messages:
            63,768
            Likes Received:
            36549
            Joined:
            Jun 7, 2010
            Location:
            Georgia
            Local Time:
            10:22 PM
            If the car is going to see track time and you decide on SS springs, I wouldn't get two of the same side. That defeats the purpose. The SS springs sit higher on the right side to help launch the vehicle straight. They flat out work. If you get two of the same part number, you'll be forever chasing traction issues at the track and never hook as strong as you could. Just my opinion.
             
          • roccodart440

            roccodart440 Well-Known Member

            Messages:
            5,570
            Likes Received:
            4577
            Joined:
            Apr 19, 2010
            Local Time:
            10:22 PM
            Factory springs hook up fine for me and they aren't different per side. THe theory behind SS springs is clear but the ride and the look (unless you play with front preloads and a lowering blocks is definitly stink bug as someone put it. I always called it the lifted 4x4 look.
             
          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.