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Technical 1940 side shift tranny convert to top shift

Discussion in 'Traditional Hot Rods' started by Street Is Neat, Aug 5, 2018.

  1. I swapped my 4 banger motor and transmission for a 1940 V8 with transmission . I thought King shift made repop shifter linkage for the side shift 40' transmission to convert to top shift
    I've done a search but can't fine anything . I've never consider until now but i was toying with the thought ....
     
  2. Fread
    Joined: Jan 29, 2009
    Posts: 12

    Fread
    Member
    from MN

    This might work...
     

    Attached Files:

    wheeldog57 and porkshop like this.
  3. drtrcrV-8
    Joined: Jan 6, 2013
    Posts: 1,520

    drtrcrV-8
    Member

    Why not use a '39 topshift trans(or a '40-'48 pickup topshift trans)? would be a bolt-in(just exchange tailshafts/housings between your '40 & the open drive Pu trans). No "Mickey Mouse" linkage, just all stock parts.
     
    LOU WELLS and teach'm like this.
  4. Mac VP
    Joined: May 13, 2014
    Posts: 376

    Mac VP
    Member

    If the transmission you have is a correct 1940 sideloader, it’ll have the preferred late style gearset. Your best bet would be to get a 1939 gearbox and shifter housing, and swap the ‘40 gearset in, as suggested above. The shifter housing must have the correct 1939 second/high shifter fork.

    There were Hurst shifter conversion kits made years ago for the 1940 side shift transmissions but they aren’t made anymore unless the new Hurst has just brought them back. Somebody made have an old original Hurst kit for sale. There are some current production shifter mfrs who may have this conversion kit but I haven’t heard anything good about the quality.
     
    LOU WELLS likes this.

  5. Thanks guys for reply and infor . Food for thought which direct .
     
  6. Kiwi 4d
    Joined: Sep 16, 2006
    Posts: 3,171

    Kiwi 4d
    ALLIANCE MEMBER

    I presume it a small early hot rod, so to give your self the most foot room ,do as mac VP said swap the 40 gears into an earlier top shift case.
     
  7. Squablow
    Joined: Apr 26, 2005
    Posts: 15,471

    Squablow
    Member

    If I'm not mistaken, a 37 or 38 case can be used in place of the '39 case if you can't find one, and also F-1 truck shifters up to '52 can be used in place of the '39 shifter too, if you have to piece one together.

    You've got the good guts, now you just need the case and shifter to put them into, and everything else should bolt up.
     
  8. Yep I’m going to start the hunt for a 48 or 78 case . Towers another story . Van Pelt was very helpful on my last AV8 build .
     

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