SM420 three speed transfer case linkage

Discussion in '40- & 55-Series Tech' started by brew8, Aug 20, 2006.

  1. brew8

    brew8 SILVER Star

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    I've been searching for a while and found some info but not much. Does anyone have a picture and a brief discription on how you made the three speed transfer linkage work with an SM420 tranny conversion, Thanks in advance, Larry
     
  2. e rock

    e rock

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    What did you start with and what have you done?

    What kind of transfer shifter? Floor? Vacuum?

    What kind of SM420 adapter? Did it rotate the tcase? How far back did it move the tcase?
     
  3. Poser

    Poser Oh...Durka Durka Durka. s-Moderator Supporting Vendor

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  4. brew8

    brew8 SILVER Star

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    I am using an extreem bends adapter, and I'll be using the transfer case out of my 73 FJ40 with the mechanical linkage, I think extreem bends rotates the case down slightly, the tranny is ready and I'll pull the three speed and the f-engine. I have a rebuilt 2F and I'll be rebuilding the transfer and putting the SM420 and the stock transfer behind it should move it back from where it is now a coupla of inches I suspect, I'll look at post 19, thanks, Larry
     
  5. brew8

    brew8 SILVER Star

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    Steve, I really like the way you had the twin stick setup with the 420, it dosen't look that bad to do, I think I will give it a go, thanks again, Larry
     
  6. Yoda

    Yoda

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    This is what the one looks like on the rig I just got

    Twinstick

    SM420 and 4speed transfer
    Dave 009 (Small).jpg
     
  7. brew8

    brew8 SILVER Star

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    That looks great as well, thanks for all the help, Larry
     
  8. Cothran

    Cothran

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    [​IMG]

    Uses all the original linkage. I just cut the 2wd/4wd arm off and cut a new arm. you wouldn't have to space it out as far as I did from the tranny if you bend the arm. Then I just cut the middle bracket and welded it on top. Shift better than when I bought it.
     
    Last edited: Aug 22, 2006
  9. brew8

    brew8 SILVER Star

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    Very nice, Larry
     
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