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Thread: switching to a V8

  1. #1
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    switching to a V8

    I'm switching my straight 6 to a chev 350. Just wondering if anyone who has completed this in the past could advise what was involved as for as motor mounts etc.

    Also, will a T5 tranny work? If not, what works well? I want to stay with a manual transmission. I currently have a dana 300 transfer case. Will this work with the 350?

    A few questions to someone who can hopefully help. Feel free to give me the heads up on whatever else I can expect to encounter.

    Thanks

  2. #2
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    I did installed a TPI 355 in my yj with the AX-15, there's lots of info but I found that the advanced adapters book that you can get at most shops like national 4x4 or others or on there website I think was the biggest help because it told you what the easy swaps were in conbinations and what was the cheapest and easyest, as well as what to stay away from due to parts cost. Anyways hope this helped.

  3. #3
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    From what I am told, the cheap way to do this is to purchase the bellhousing conversion kit and it will bolt up to the existing tranny and T-case. If you're 4.0L, I don't know if you can. But the 4.2 has this option. Not sure what you want to do though or what motor you have. But just a thought. You would have to move motor mounts forward though.
    So I said to myself.... "Self...." And I knew it was me cause I recignized the voice! "Keep the skid lid up and the rubbers down!! Until you're offroad."

  4. #4
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    Hope this helps, a clean all aluminum V8 swap....


  5. #5
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    Here are some pics of my Vortec 5.7L swap.

    Might help you out abit.

    http://s29.photobucket.com/albums/c2...ject%20Vortec/

    S.

  6. #6
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    dvsjeep... I see you fabracated your frame horns out of square tubing. How are they holding up? Any cracking in the welds? Would you make them the same way if you had to do it over? I'm asking 'cuz I have to make a set and your design looks pretty straight forward.
    87 YJ, 3" body lift, 33 x 12.5, AX-15, NP231, Cobra 29 Ltd Classic, SuperWinch OX, Lowrance Ifinder GPS, the 258 is out... getting ready to put the AMC 360 in....

  7. #7
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    It has worked great, tore the factory motor mounts out of it, put in some energy suspension ones, solved the problem. It gets worked hard and a lot of bouncing, holding up fine.

    the frame mount is wrapped top and side with angle iron which helps spread the load out on the frame. I think I used 2" x 3/16" wall for the sqaure tube extentions.

    Real simple way to do it, I would do it again the same, only forget the motor mounts and solid mount it, for what I use it for.

    S.

  8. #8
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    I have the same motor mount design with the square tubing as dvs with my TPI, and I have had my swap in for 5-7 year now. I finally have broken the bottom weld on mine and I'm just re-welding them now while I do my body swap actually but with how had I am on it, I'm more then happy with the amount of time it's lasted and now I'm adding a support plate.

    Just make sure when you weld them in that you don't get the frame area any hotter then needed because it will make the frame brittle which is my my motor mount pushed into the frame...lol

    Good luck with your swap.

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