h55/split t-case question

Discussion in '40- & 55-Series Tech' started by mikruiser, Nov 14, 2005.

  1. mikruiser

    mikruiser

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    So I am putting an h55 in my fj40. I had a later model(74-78) 4 speed(h41?) in it with the matching yoter t-case. My question is does the old cross member have a different bolt pattern than the one on the split case that goes with the h55? (I haven't gotten the split case yet so if you have one let me know) Thanks!!
    -Mike
     
  2. ridgerunner

    ridgerunner

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    There is no crossmember with the H41 tranny- it would have hung off the bellhousing mounts. Toyota never made a single piece case cradle tranny mount.
     
  3. bcon

    bcon

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    I cut up a troopie with a cradled H41....
     
  4. ridgerunner

    ridgerunner

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    What year? The later split case models had cradle mounts.

    AFAIK the only single case cradle mount is under my truck, and Toyota didn't put it there.
     
  5. bcon

    bcon

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    Now I have to think but i think it was a 79 or 80. HJ and ill know for sure what it was i pulled in a week or so when i can look at it.
     
  6. bcon

    bcon

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    And i am 90% sure it was early and not split as I think its the only early i have left.
     
  7. DaveWest5150

    DaveWest5150

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    If your old trans had a crossmember under the tranmission ... yes, it will bolt on
    same as your 4 speed.
     
  8. mikruiser

    mikruiser

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    thanks Dave! thats what i needed to know, looks like the person that put the 4 speed and single piece t-case put in a crossmember upon installing it, as it it a 72 and came stock with the 3-spd
     
  9. 65swb45

    65swb45 Elder Statesman Supporting Vendor

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    I HAVE seen a homemade crossmember on the 78 and newer trans that utilized the three bolts on the rear xtnsn housing plate as an anchor point. If the H41 had a factory mount, it would be on the BOTTOM of the trans, not from the back, and it would have 4 bolts that face up. Hth
     
  10. Josie'sLandCruiser

    Josie'sLandCruiser Stop calling it a "FJ."

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    Hi All:

    Just to re-inforce Mark's statement, the transmission crossmember for the 60/70 Series vehicles is *under* the transmission, not at the bellhousing (like on the earlier 40/45/55 Series.)

    So, to swap a H55F into a "F" or "2F" power FJ40 will require the "split" type transfer case, new drive shafts, a different transmission crossmember, longer parking brake cable (or switching to a rear axle mounted parking brake), modifications to the transmission "hump" I imagine, and other things I'm forgetting!

    An "easy" way to get an overdrive of sorts is to swap from 4.1 ratio differential gears to 3.7 ratio.

    Regards,

    Alan
    Seattle
     
  11. mikruiser

    mikruiser

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    Yea I wish I could just change gears but both my old t-case and transmission need to be rebuilt, so that is the way I chose to go.
     
  12. ridgerunner

    ridgerunner

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    Here's two threads on pirate of my old crossmember mount:
    http://www.pirate4x4.com/forum/showthread.php?t=206429&highlight=crossmember
    http://www.pirate4x4.com/forum/showthread.php?t=205438&highlight=crossmember
    The weight of the tranny/case sits on the rib under the tranny, and attaches to two of the three bottom holes of the extension. It has held up the ranger/h42/case setup now in two different trucks, and I haven't had any problems with it.

    EDIT: Mark and others were correct. Here's a rebuild of a FJ55 using a single piece case and four speed using an OE cradle mount. http://www.pirate4x4.com/forum/showthread.php?t=414794
     
    Last edited: Mar 24, 2006
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