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Sm420 To Dana 18

Discussion in 'Early CJ5 and CJ6 Tech' started by hunter blacksmith, Sep 25, 2019.

  1. Sep 25, 2019
    hunter blacksmith

    hunter blacksmith Sleepin’ Jeeper

    Valley springs,ca
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    May 23, 2019
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    Hey guys. I really want to change my t14 for a sm420. Especially since my t14 is broken and I have the sm420. But I still need the adapter and the drivelines. I have the bell housing. Any suggestions? Anyone wanna sell some stuff?
     
  2. Sep 25, 2019
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member 2020 Sponsor

    Denver, CO
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    Novak has the perfect adapter for this...but maybe that is really, REALLY, really want it for the price...
     
  3. Sep 25, 2019
    47v6

    47v6 junk wrecker! 2020 Sponsor

    Washington DC.
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    I used the Novak Adapter. It works. Its expensive but nicely made and their support is great. Tom Woods made my rear driveshaft. Its expensive and nicely made too. I'm going to remake my front driveshaft as the slip yoke and splines are wore out. It doesn't need to be balanced and perfect because its slow speed and I am in 2wd about 99.99% of the time anyway.
     
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  4. Sep 25, 2019
    hunter blacksmith

    hunter blacksmith Sleepin’ Jeeper

    Valley springs,ca
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    I know Novak sells the adapter but I need new drivelines because it extends the t-case 4” towards the back of the vehicle.
     
  5. Sep 25, 2019
    47v6

    47v6 junk wrecker! 2020 Sponsor

    Washington DC.
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    If you have access to a lathe long enough you can make a satisfactory driveshaft that might be just fine.. Or it might not. The front is easy, grind the welds and knock off the ends. Buy some DOM, cut to length, make sure to phase the yokes correctly and weld er up.

    I think Tom Woods made my rear for like 385.00 with a double cardan joint with shipping.
     
  6. Sep 25, 2019
    AKCJ

    AKCJ Active Member

    Fairbanks, Alaska
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    Aug 12, 2003
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    1,018
    I also used the Novak adapter. Great product and support. Local shop did my drive shafts.
    This swap was definitely worth it for me.
     
  7. Sep 25, 2019
    hunter blacksmith

    hunter blacksmith Sleepin’ Jeeper

    Valley springs,ca
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    (y)Just called my driveline guy and he said $300 for front and rear.
     
  8. Sep 25, 2019
    47v6

    47v6 junk wrecker! 2020 Sponsor

    Washington DC.
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    Great deal!
     
  9. Sep 25, 2019
    Ns0mniac

    Ns0mniac New Member

    San Clemente, CA
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    Aug 7, 2019
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    I run and SM420/Dana 18, beastly drivetrain, I'm sure you'll be happy with the return on investment. Everyone always asks me what my favorite part about my Jeep is and I always tell them it's a tie between the Dana 18 and the SM420. $300 for front and rear driveshafts is a bargain too!
     
  10. Sep 25, 2019
    Cowboyjeeper

    Cowboyjeeper Member

    Show low az
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    Good to hear that is on my short lost of mods.
     
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  11. Sep 25, 2019
    hunter blacksmith

    hunter blacksmith Sleepin’ Jeeper

    Valley springs,ca
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    Btw does anyone know of a place that sells a Dana 18 front pto? I have a nice pto drive winch but I don’t have the port.
     
  12. Sep 25, 2019
    Cowboyjeeper

    Cowboyjeeper Member

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    I think they all have the cover. Mine has a pto winch and it uses the standard pto with a chain i thnk.[​IMG] Imgur
     
  13. Sep 25, 2019
    hunter blacksmith

    hunter blacksmith Sleepin’ Jeeper

    Valley springs,ca
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    My t-case does not have that attachment.
     
  14. Sep 26, 2019
    Cowboyjeeper

    Cowboyjeeper Member

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    I see what you mean now. But they all have a pto spot. I have however seen ptos on ebay from time to time
     
  15. Sep 26, 2019
    timgr

    timgr Jeepin' Nerd 2020 Sponsor 2019 Sponsor

    Medford Mass USA
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    From what I recall, you can have the PTO and/or an overdrive replacing the cover on the back of the transfer case. Herm has a page - Power Take Off | Herm The Overdrive Guy Herm may have one on the shelf, but typically it's an eBay / Craig's List / swap meet type item.
     
  16. Sep 26, 2019
    hunter blacksmith

    hunter blacksmith Sleepin’ Jeeper

    Valley springs,ca
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    As it is right now I have a OD on the back. Can I use a pto and still have my OD?
     
  17. Sep 26, 2019
    timgr

    timgr Jeepin' Nerd 2020 Sponsor 2019 Sponsor

    Medford Mass USA
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    I think so, but IIRC it involves more scarce parts. Call Herm and ask him.

    Or sell the PTO winch and go electric. Likely cheaper in the long run.
     
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  18. Sep 26, 2019
    hunter blacksmith

    hunter blacksmith Sleepin’ Jeeper

    Valley springs,ca
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    That’s another thing. I have a warn 8375. It’s a big ol’ Honkin thing. Not sure I wanna put it back on the Jeep. It weighs 200 pounds.
     
  19. Sep 26, 2019
    hunter blacksmith

    hunter blacksmith Sleepin’ Jeeper

    Valley springs,ca
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    I have thousands of jeep parts ‘68-‘46. But not all of the ones I need to finish my one Jeep.
     
    Welderr likes this.
  20. Sep 26, 2019
    hunter blacksmith

    hunter blacksmith Sleepin’ Jeeper

    Valley springs,ca
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    I have a 1946 cj2a, 1953 m38a1, 1962 cj5, 1966 cj5, 1968 cj5. 5x F134, 3x 225, 2x 304. And everything in between.
     

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