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Will a 500CID Cadillac engine bolt up?

Discussion in 'Jeepster Commando and Commando Tech' started by HeepaJeep, Aug 30, 2007.

  1. Feb 9, 2010
    Monster Rat

    Monster Rat New Member

    Joined:
    Sep 19, 2009
    Messages:
    8
    Greg you have been most helpful. I called a local tranny shop to see what they would charge to swap guts, I was quoted $950........talk about motivation to learn something new! I'm going to get a simple seal kit and swap it all myself. Since the Jeepster tranny is fresh with only 10,000 miles on it, I won't be disassembling the drums/hubs. I still think I will get a repair manual just to be safe.
     
  2. Feb 9, 2010
    Monster Rat

    Monster Rat New Member

    Joined:
    Sep 19, 2009
    Messages:
    8
    Oh yeah one more question. I can use the valve body from the Jeepster tranny right? It was assembled with a shift improver when that tranny was built in '06.

    Thanks
     
  3. Feb 9, 2010
    Pack Rat

    Pack Rat Old Timer

    I live in a...
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    Apr 1, 2006
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    1,512
    Even if you had a short shaft 400 you'd need the output shaft from the Jeepter any way as it has a groove cut in it for an "O" ring that car trannys don't have. The 400's are pretty simple to rebuild, even simpler if you're just changing the internals from one to the other. Should have no problem using the valve body either. I can tell you without a doubt you don't have a TH425.

    [​IMG]
    ^^^^^TH425^^^^^
     
  4. Feb 10, 2010
    avmechanic

    avmechanic Gearhead

    Langley B.C. Canada
    Joined:
    Jul 1, 2008
    Messages:
    263
    Sorry, my mistake about the TH425. You definitely will not have one of those. I was thinking that one of the previous posters was talking about the TH475 and mixed it up with 425 front driver. The TH475 is a heavy duty TH400 with straight cut planetary gears and heavy duty clutches along with heavy duty case and a few other goodies. It was used in some Caddys as well as motorhomes and other heavy duty applications. I doubted you would have had one of them as they are rare. Regular TH400s are plenty tough anyways. If you are mechanically inclined and have a good book you should be able to handle the swap of parts. You may be able to find a PDF of a manual online or some other directions. I have a couple good books but nothing digital. The Valvebody should swap fine. $950 is pretty pricey I would say. Do it yourself. It is not as tough as people make it out to be. Just be carefull and keep things clean as well as have a clean place to do it. Good luck with it.
    Greg
     
  5. Oct 12, 2010
    Monster Rat

    Monster Rat New Member

    Joined:
    Sep 19, 2009
    Messages:
    8
    Thought I would give an update of my build. I was able to use the Jeepster tranny after clearancing the adapter. I finally got it on the road, and here is a short vid. Turn it up around 50 sec. The Caddy sounds great!

    Thanks for all the help guys!


    http://www.youtube.com/watch?v=XlbX1HnZx8c
     
    Last edited: Oct 12, 2010
  6. Oct 12, 2010
    Pack Rat

    Pack Rat Old Timer

    I live in a...
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    Was wondering how you were coming along with that, thanks for the update. Sounding mighty fine ;).
     
  7. Oct 16, 2010
    Psychojeeper

    Psychojeeper Aint 'sposed to be pretty

    Las Cruces, New...
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    Nov 15, 2005
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    368
    Woo-Hooooo,,,damn good looking rod,,,looks like a lot of fun to play with.
     
  8. Oct 16, 2010
    bkd

    bkd Moderator Supreme Staff Member 2022 Sponsor

    K-Town Tenn.
    Joined:
    Apr 29, 2007
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    3,294
    that's awesome....still grinning ear to ear :D
    Jim
     
  9. Oct 17, 2010
    lhyatt

    lhyatt Member

    southern,Ohio
    Joined:
    Aug 2, 2008
    Messages:
    50
    Is your truck for hire ? I'm thinking that's what I want to haul me to where I well be laid to rest,(when someday I go).
    Larry
     
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