1. Registration trouble? Please use the "Contact Us" link at the bottom right corner of the page and your issue will be resolved.
    Dismiss Notice

Sm420 To Dana 18

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

  1. Sep 26, 2019
    Twin2

    Twin2 wasn't me 2020 Sponsor 2019 Sponsor

    Virginia Beach, VA
    Joined:
    Apr 28, 2011
    Messages:
    3,932
    here's the catch 22
    T14 output is 10 spline . so OD is 10 spline also
    you do the swap your going to be 6 spline on output shaft
    going to need new bull gear for OD to work
     
  2. Sep 26, 2019
    hunter blacksmith

    hunter blacksmith Sleepin’ Jeeper

    Valley springs,ca
    Joined:
    May 23, 2019
    Messages:
    61
    I will ask the guys at Novak about that. They did not say anything like that when I called them about my setup and asked what exactly I need
     
  3. Sep 26, 2019
    timgr

    timgr Jeepin' Nerd 2020 Sponsor 2019 Sponsor

    Medford Mass USA
    Joined:
    Aug 10, 2003
    Messages:
    20,350
    Yes, the T-14 has 10 splines. You will need a new planetary gear for the overdrive that matches the spline count of the new main shaft for the SM420 (6 splines). Or, you could leave off the overdrive and use a 18-8-23 output gear that has 6 splines.

    Also look here regarding the PTO - Overdrive Parts and Accessories | Herm The Overdrive Guy
     
  4. Sep 26, 2019
    47v6

    47v6 junk wrecker! 2020 Sponsor

    Washington DC.
    Joined:
    Oct 25, 2006
    Messages:
    4,676
  5. Sep 26, 2019
    Cowboyjeeper

    Cowboyjeeper Member

    Show low az
    Joined:
    Mar 5, 2019
    Messages:
    279
    Herm does have the adapters to run pto and od i inquired recently as id like to have od at somepoint but keep my pto
     
  6. Sep 26, 2019
    Ns0mniac

    Ns0mniac New Member

    San Clemente, CA
    Joined:
    Aug 7, 2019
    Messages:
    13
    I originally desired a PTO winch until I learned about the limitations of such a system. If you do go and spend all that time and money getting a PTO winch setup together make sure you do your research first and decide it's what you want. I love old school tech and I did want a PTO very badly but after looking at the pros and cons I wound up going electric.
     
  7. Sep 26, 2019
    Twin2

    Twin2 wasn't me 2020 Sponsor 2019 Sponsor

    Virginia Beach, VA
    Joined:
    Apr 28, 2011
    Messages:
    3,932

    going electric is good for short use
    PTO will work all day long . unless engine gives out
     
    Ns0mniac likes this.
  8. Sep 26, 2019
    hunter blacksmith

    hunter blacksmith Sleepin’ Jeeper

    Valley springs,ca
    Joined:
    May 23, 2019
    Messages:
    61
    image.jpg Correction it’s a 8074. Still really big and I’m not sure if I want this on my Jeep.
     
  9. Sep 26, 2019
    47v6

    47v6 junk wrecker! 2020 Sponsor

    Washington DC.
    Joined:
    Oct 25, 2006
    Messages:
    4,676
    Wow, that a giant old cool hunk of something. Make it work, if you dont like it, Im sure someone might buy it.
     
  10. Sep 26, 2019
    hunter blacksmith

    hunter blacksmith Sleepin’ Jeeper

    Valley springs,ca
    Joined:
    May 23, 2019
    Messages:
    61
    I’ve been taking peeks at it all day. It’s kinda growing on me. That part of me is saying yes, paint it and put it on your bumper!:twist:
     
    47v6 and Ns0mniac like this.
  11. Oct 3, 2019
    wasillashack

    wasillashack Member

    Wasilla, Alaska
    Joined:
    Mar 17, 2008
    Messages:
    215
    I have the AA adapter, unused, for an SM420/dana 18. It is the type that replaces the whole shaft. I don't know if it is acceptable to post prices and personal contact info in this forum. please PM me here.

    The 8074 was an interim winch between the more or less current 8274 and the older Warn 5687 (also referred to as Warn 6000) The Warn 5687 is a duplicate of the Bellvue winch that Warn purchased I have working examples of all 3 in the basement
     
    Last edited: Oct 3, 2019
    Cowboyjeeper and 47v6 like this.
  12. Oct 3, 2019
    wasillashack

    wasillashack Member

    Wasilla, Alaska
    Joined:
    Mar 17, 2008
    Messages:
    215
    The 8074 was an interim winch between the more or less current 8274 and the older Warn 5687 (also referred to as Warn 6000) The Warn 5687 is a duplicate of the Bellvue winch that Warn purchased I have working examples of all 3 in the basement
     
  13. Oct 3, 2019
    Cowboyjeeper

    Cowboyjeeper Member

    Show low az
    Joined:
    Mar 5, 2019
    Messages:
    279
    If he dosent want it pm me with price and info

     
  14. Oct 17, 2019
    hunter blacksmith

    hunter blacksmith Sleepin’ Jeeper

    Valley springs,ca
    Joined:
    May 23, 2019
    Messages:
    61
    I found a local who had a rebuilt SM420 with the 10 spline spud adapter for $300. I’m picking it up on Tuesday. Looks like I’ll have something to do this winter.
     
    Ns0mniac likes this.
  15. Oct 22, 2019
    Flybrian1950

    Flybrian1950 Barnfind CJ-6

    Monmouth, Oregon
    Joined:
    Jun 13, 2018
    Messages:
    15
    Interested in a 4 speed for my early cj, is the AA adapter still available? In Oregon
     
  16. Nov 20, 2019
    hunter blacksmith

    hunter blacksmith Sleepin’ Jeeper

    Valley springs,ca
    Joined:
    May 23, 2019
    Messages:
    61
    She’s ready to go in! Just dropped off my drivelines this morning. I’ll have it installed tomorrow night. A2231122-48EB-4AD3-8374-8BB334CE1D6B.jpeg 340D7720-C3A0-40D8-B2CC-97A3A2351CAC.jpeg
     
    Ns0mniac and Cowboyjeeper like this.
  17. Nov 21, 2019
    Ns0mniac

    Ns0mniac New Member

    San Clemente, CA
    Joined:
    Aug 7, 2019
    Messages:
    13
    Nice! I'm sure you'll be quite pleased with the results.
     
  18. Nov 21, 2019
    hunter blacksmith

    hunter blacksmith Sleepin’ Jeeper

    Valley springs,ca
    Joined:
    May 23, 2019
    Messages:
    61
    Since the t14 was a 10 spline output I swapped the main input gear to a 6 spline 18-8-23 (29 tooth). I’ll be running without the O.D. for now. At least until I can afford one. I have the transmission in position under my Jeep right now I just need to align it and slide it into position. My drivelines are done And they look amazing.
     
  19. Nov 21, 2019
    colojeepguy

    colojeepguy Colorado Springs 2019 Sponsor

    At the foot of...
    Joined:
    Apr 4, 2010
    Messages:
    4,458
    You don't need a whole new od, just need to replace the planetary hub with a 6 spline version. I bought one from Advance Adapter for about $300.
    It does require a complete teardown of the overdrive unit though.
     
  20. Nov 22, 2019
    hunter blacksmith

    hunter blacksmith Sleepin’ Jeeper

    Valley springs,ca
    Joined:
    May 23, 2019
    Messages:
    61
    Well... in the last month I’ve put in about $900 into my Jeep and it’s getting to be Christmas time so I have to get some money built up to buy some gifts for my parents.
     

Share This Page

New Posts