Engine Casting # Mark Question

General Mopar Tech Discussions

  1. The Rebel

    The Rebel Well-Known Member

    Messages:
    2,962
    Likes Received:
    4200
    Joined:
    Jul 19, 2016
    Location:
    SW CT
    Local Time:
    4:28 AM
    Anyone know what the LL stands for?

    Capture.JPG
     
  2. Ghostrider 67

    Ghostrider 67 Power corrupts.....lol..... FBBO Gold Member

    Messages:
    26,149
    Likes Received:
    53668
    Joined:
    Oct 16, 2014
    Location:
    Salisbury, Vermont
    Local Time:
    4:28 AM
    Is this on the side of your 383? 1968?
     
    • Agree Agree x 1
    • Ghostrider 67

      Ghostrider 67 Power corrupts.....lol..... FBBO Gold Member

      Messages:
      26,149
      Likes Received:
      53668
      Joined:
      Oct 16, 2014
      Location:
      Salisbury, Vermont
      Local Time:
      4:28 AM
      I have searched everywhere and found nothing except another B Body buy who asked the same question and did not get an answer.
       
      • Thanks! Thanks! x 1
      • Mopars & Missiles

        Mopars & Missiles Well-Known Member

        Messages:
        1,963
        Likes Received:
        2890
        Joined:
        Nov 22, 2010
        Location:
        Northern Indiana
        Local Time:
        4:28 AM
        When you get it figured out, let me know too.

        PA310009.JPG
         
        • Thanks! Thanks! x 1
        • Ghostrider 67

          Ghostrider 67 Power corrupts.....lol..... FBBO Gold Member

          Messages:
          26,149
          Likes Received:
          53668
          Joined:
          Oct 16, 2014
          Location:
          Salisbury, Vermont
          Local Time:
          4:28 AM
          I called 440 Source and they had no idea. Suggested I call a MOPAR restoration company and ask. I did, I called Hodge Restoration in SC and he said to e mail him a picture of it and he will look at it after lunch and get back to me. I will let you know if I find out.
           
          • Thanks! Thanks! x 1
          • PP1RT

            PP1RT Well-Known Member

            Messages:
            2,383
            Likes Received:
            3070
            Joined:
            Jun 26, 2015
            Location:
            IA
            Local Time:
            3:28 AM
            Lower Left :lol:
             
            • Like Like x 3
            • 69Coronetrt

              69Coronetrt Well-Known Member

              Messages:
              3,309
              Likes Received:
              2348
              Joined:
              Jul 17, 2008
              Location:
              Harlan, IA
              Local Time:
              3:28 AM
              I’m guessing it’s a foundry mark of some sort. The N D casting clock is right below it.
               
              • Thanks! Thanks! x 1
              • lewtot184

                lewtot184 Well-Known Member

                Messages:
                4,700
                Likes Received:
                2991
                Joined:
                Aug 21, 2011
                Location:
                indianapolis
                Local Time:
                4:28 AM
                i had a friend who worked at the foundry in Indianapolis and he told me all the number/letter stuff that people "interpret" isn't correct.
                 
                • Thanks! Thanks! x 2
                • Ghostrider 67

                  Ghostrider 67 Power corrupts.....lol..... FBBO Gold Member

                  Messages:
                  26,149
                  Likes Received:
                  53668
                  Joined:
                  Oct 16, 2014
                  Location:
                  Salisbury, Vermont
                  Local Time:
                  4:28 AM
                  I know LC means low compression ( low power).
                   
                  • Agree Agree x 1
                  • Ghostrider 67

                    Ghostrider 67 Power corrupts.....lol..... FBBO Gold Member

                    Messages:
                    26,149
                    Likes Received:
                    53668
                    Joined:
                    Oct 16, 2014
                    Location:
                    Salisbury, Vermont
                    Local Time:
                    4:28 AM
                    i'm wondering if it means "Last Line" as in last line of blocks before re setting molds.
                     
                    • Like Like x 1
                    • The Rebel

                      The Rebel Well-Known Member

                      Messages:
                      2,962
                      Likes Received:
                      4200
                      Joined:
                      Jul 19, 2016
                      Location:
                      SW CT
                      Local Time:
                      4:28 AM
                      Thanks for going above & beyond Ghost!
                       
                      • Thanks! Thanks! x 1
                      • Agree Agree x 1
                      • SuperFlyTNT

                        SuperFlyTNT Well-Known Member

                        Messages:
                        60
                        Likes Received:
                        40
                        Joined:
                        Oct 22, 2011
                        Location:
                        Arnhem
                        Local Time:
                        10:28 AM
                        Just bumping this thread, as I need someone who could provide some empirical data to support my theory about LL below (I copied below text from a post on fb I made earlier as a response to a similar question):

                        I am not 100% sure, BUT, the 383 and 426w/Hemi shared the same standard bore size, with the 383 being a Low deck and the 426 engines a Raised deck. On the Raised deck 426 blocks an 'RL' is often cast in at the foundry. It could be to distinguish casting molds between the Low and Raised deck engines sharing the same bore. Also, the 'LL' was already found on the first 383s from the late 50s Coincidentally a Raised version of the 383 [2120329] was also available in 1959-60 with a small bore of 4.03" and 3.75" stroke. These Raised 383s used casting RS. My guess is that the first letter designates the engine platform Low Deck or Raised Deck. The second letter could designate bore size and to be able to distinguish between molds, either Small (S) or Large (L). Small bore would be the 4.03" and I have only seen it on the RB 383. The large bore would be 4.25", which was the largest bore at the time. However, 413 blocks with casting 2468030 and bore size 4.1875" (in between 4.03" and 4.25") also had RL and it could be that these blocks have the cylinder wall thickness of a 426, but only bored to 4.1875". These blocks would have relatively thicker cylinder walls.

                        To add to the last item about the 413s; I know that back in the mid 60s some 413s and 426w blocks were cast with only 2468 cast in, but with RL. If 361 block also had LL, the cylinder wall thickness also might allow boring to 4.25", but sonic testing would give a definitive answer. *Edit* Initially I did not check the combination LS, but apparently the LS was cast on early 361 blocks (#1944959), probably using molds from the smaller bore 350 (#1944929). According to my theory this would correspond to Low deck, Small bore. Compared to the 383 available at the time (late 50s) that is exactly what the 361 was.

                        When the 440 was introduced, it replaced the 426w passenger car engine as the only RB wedge in the engine lineup and designation for both the Raised deck as well as bore size was no longer required (413s were still used for Industrial applications with a different casting). On the 383 it was also phased out at some point (probably after the 361 passenger car engine was discontinued), as I have seen blocks without LL.

                        Anyway, what I would like to find out is if the earlier 413 blocks from 1959 onwards had RL cast in or not.

                        Besides meeting someone who exactly knows what the LL, RL and RS mean, some empirical data would be needed to (dis)prove my theory. So, if everyone could check their 383, 413 and 426 casting numbers and dates; that would be nice:):):):):lol:
                        Screenshot_20220114-221143_Samsung Internet.jpg Screenshot_20220114-221303_Google.jpg
                         
                        Last edited: Jan 15, 2022
                      • glenns hc

                        glenns hc Active Member

                        Messages:
                        39
                        Likes Received:
                        24
                        Joined:
                        Dec 24, 2021
                        Location:
                        Queens NY
                        Local Time:
                        4:28 AM
                        LL was do to a cast adjustment
                         
                      • glenns hc

                        glenns hc Active Member

                        Messages:
                        39
                        Likes Received:
                        24
                        Joined:
                        Dec 24, 2021
                        Location:
                        Queens NY
                        Local Time:
                        4:28 AM
                        Your onto something because my understanding was that there was a casting adjustment or modification to the cast that’s why the blocks made in the adjusted cast got the LL
                         
                      • Stumper

                        Stumper Well-Known Member

                        Messages:
                        1,287
                        Likes Received:
                        208
                        Joined:
                        Oct 28, 2010
                        Location:
                        Bandana, NC
                        Local Time:
                        4:28 AM
                        FWIW, The 361 in my 62’ has the LS casting mark.
                         
                      • qkcuda

                        qkcuda Well-Known Member

                        Messages:
                        833
                        Likes Received:
                        1074
                        Joined:
                        Aug 29, 2019
                        Location:
                        Jarvis, Ontario
                        Local Time:
                        4:28 AM
                        This theory makes sense to me. Here is what is cast into my 66 361.

                        IMG_20210320_111453.jpg IMG_20210320_111513.jpg
                         
                      • Nate S

                        Nate S Well-Known Member

                        Messages:
                        1,339
                        Likes Received:
                        1384
                        Joined:
                        Apr 24, 2020
                        Location:
                        Connecticut
                        Local Time:
                        4:28 AM
                        Wow, I think you’ve got it. To answer your question, here’s a ‘64 413. 2383102E-781F-4827-A489-85EFE9CFF252.jpeg
                        My ‘64 361 has LS
                         
                        • Thanks! Thanks! x 1
                        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.