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Hot Rods I need a slip yoke...and some advice.

Discussion in 'The Hokey Ass Message Board' started by Deyomatic, Dec 18, 2023.

  1. Deyomatic
    Joined: Apr 17, 2002
    Posts: 3,316

    Deyomatic
    Member
    from CT

    I have a goofy transmission I plan to install this winter and I'm having a fit figuring out a slip yoke.

    It came out of a '76 Gremlin and the front half is a Ford 3.03, the back half is a Lay**** de Normanville planetary gear OD.

    I have 25 splines and the am measuring about 1.087"- 1.09" inches on the "peak to peak" measurement at the output shaft. I ordered a ****er slip yoke (Part # 2-3-15461X) that shows 25 splines and a spline diameter of 1.113". I was worried it was going to be a smidge big but it won't fit over my output shaft.
    https://www.actionmachineinc.com/products/2-3-15461x?variant=9492577484852

    The problem is that ALL of the 25 spline yokes I see have those same measurements.

    Any thoughts on what I need...or who may have one?

    Thanks in advance.
     

    Attached Files:

  2. squirrel
    Joined: Sep 23, 2004
    Posts: 60,021

    squirrel
    Member

    look at Volvo stuff? :) (they used the OD, as did some British cars)

    or look at AMC stuff.
     
  3. Tried Denny’s driveshafts?
     
    ffr1222k and Truckdoctor Andy like this.
  4. I’ve got the same trans for a future project
    Curious as well
     
  5. Deyomatic
    Joined: Apr 17, 2002
    Posts: 3,316

    Deyomatic
    Member
    from CT

    I did not contact them...The one I called was CCI and the guy wasn't very helpful. He was telling me that I needed one that was out of production but when he gave me the measurement that he was 100% sure of, it was wrong...but that same measurement matched the OD of the one shown above from Action Machine...so I went with that.
    I'll try Denny's if Action Machine isn't helpful.
     
  6. Beanscoot
    Joined: May 14, 2008
    Posts: 3,676

    Beanscoot
    Member

    I'd call that transmission pretty neat, and pretty rare!
     
  7. Deyomatic
    Joined: Apr 17, 2002
    Posts: 3,316

    Deyomatic
    Member
    from CT

    Whoops...Thanks Squirrel. The British cars used a bolted flange off the back of the ******. This was the Lay**** guru's first time seeing one with splines instead of a bolted flange. Not sure on the Volvo's.
    This is something AMC cooked up. I asked on one of their forums and nobody seemed to know.
     
    Last edited: Dec 18, 2023
  8. Deyomatic
    Joined: Apr 17, 2002
    Posts: 3,316

    Deyomatic
    Member
    from CT

    Here's a before and after for reference.
     

    Attached Files:

  9. JohnLewis
    Joined: Feb 19, 2023
    Posts: 660

    JohnLewis
    ALLIANCE MEMBER

    When all else fails, I'd just pay the money and find a competent person or company to cut a piece to your needs or design. Otherwise I'd slip on the idea and go with something else (stupid pun, "yokes" on me).
     
  10. Truckdoctor Andy and Toms Dogs like this.
  11. deucemac
    Joined: Aug 31, 2008
    Posts: 1,653

    deucemac
    Member

    I am running that exact same setup in my avatar roadster. It came out of a same year Pacer. I took the trans to a transmission shop in Lancaster and the counter man gave me a used slip yoke from a mid 60s Mustang. It fits perfectly and has given me good service since I put it on the road in 2009. I asked AMC guys and got a blank look. Most never knew that the transmission/overdrive was a rare 3 year option on Pacers, Gremlins, and Hornets from 75-77. Not many were made. The trans is a Ford 3.03 Full syncro three speed and the overdrive is the later Lay**** De Normanville unit with an American output shaft of 25 splines. I converted mine to a top shifter trans using the Jeep T 150 shift cover. It all worked out well, and the shifter is within 1" of where the original 32 shifter came out of the floor. The trans is just about bullet proof and so is the overdrive. It was used on Jaguars, Aston Martins, Volvos, and other high end European cars. The only thing unique is the adapter from the trans to the overdrive. Gearvendors still produces that overdrive and has anything you need for it. But, it has been behind my hot rod 354 hemi all this time and nary a wiper from it.
     
  12. nosford
    Joined: Feb 7, 2011
    Posts: 1,131

    nosford
    Member

    Falcon 1964 and 1965 with a 4 speed top loader used a 25 spline yoke that was unique to the Falcon transmission. It was even possible some early Mustangs got this trans as well. They were famous for breaking if you launched hard with sticky tires. 3 speed top loaders and later 4 speeds used a 28 spline output shaft with a matching yoke. Many early Falcon top loaders were converted to the 28 spline output and the old yokes were usually discarded cause no one wanted them. Check with the Falcon guys, they may have one laying around.
     
  13. I put an early Ford 3.03 transmission in my '50 Ford to allow for a syncronized low gear. The output shaft was 25 spline instead of the more common 28 spline. Depending on the rear bushing size in the housing for the slip yoke one of these may fit your o/d unit. One is 1 3/8 inch dia. and the other is 1 1/2 inch. Mine took the 1 1/2 inch but yours may not. Follow the links and see what is offered. Good luck

    https://fortwayneclutch.com/product...nsmission-driveshaft-slip-yoke-sku-2-3-8431x/

    https://www.dennysdriveshaft.com/p1..._slip_yoke_1310_series_25_splines_with_1.html
     
  14. Hmmmm
    I got an 8 inch ford rear emd a while back with a driveshaft.
    Might check to see if it fits.
     
  15. Beanscoot
    Joined: May 14, 2008
    Posts: 3,676

    Beanscoot
    Member

  16. wheeltramp brian
    Joined: Jun 11, 2010
    Posts: 3,355

    wheeltramp brian
    Member

    Let me check at work. I may have one.
     
  17. Deyomatic
    Joined: Apr 17, 2002
    Posts: 3,316

    Deyomatic
    Member
    from CT

    Wheeltramp...if you can find one let me know. Thank you for looking.
    Nothing back from the place I bought the first yoke from...their website says to email them to get faster responses. I'll be patient.
    If Wheeltramp doesn't have one, and I don't get a good answer from Action Machine, Denny's will be getting a call.
     
  18. Deyomatic
    Joined: Apr 17, 2002
    Posts: 3,316

    Deyomatic
    Member
    from CT

    Boy...Denny's Driveshft's "Contact Us" is ****. It tells you that sending them an email is your best bet...doesn't give you an email address and relies on an online form...and the form gives you an error when you try to send ask your question.
    I'll try calling whenever I get a chance.

    Thanks again.
     
  19. wheeltramp brian
    Joined: Jun 11, 2010
    Posts: 3,355

    wheeltramp brian
    Member

    Hey deyomatic shoot me a text tomorrow from 8-4 as I keep forgetting to look.6618780676
     
  20. gene-koning
    Joined: Oct 28, 2016
    Posts: 5,854

    gene-koning
    Member

    For what ever its worth, back at the end of the last century, Dodge 4x4 trucks that came with a flange u joint that bolted to the trans and the normal rear u joint and also many trucks that had a center driveshaft carrier bearing also had a slip joint someplace in the center of the drive shaft. Some of those shafts are pretty short, but others are pretty long. I would think that slip joint could be added to an existing driveshaft just behind the transmission yoke.
     
  21. Deyomatic
    Joined: Apr 17, 2002
    Posts: 3,316

    Deyomatic
    Member
    from CT

    Gene- that is something to keep in my back pocket, if I can't find the slip yoke. The Brit and Volvo units had a bolted flange and, while expensive to have this guy take it apart again to replace the output shaft with a Brit/ Volvo one, it might be the answer.

    For those waiting in suspense...Wheeltramp Brian sent me one that I was hoping would work but alas, it seems to be the same application as the unit that I sent back to Action Machine. Action is going to measure another one that they have and if it's larger he'll send it. If they don't have it, I'll be checking with Denny's. I might just call them anyway.
     
  22. Deyomatic
    Joined: Apr 17, 2002
    Posts: 3,316

    Deyomatic
    Member
    from CT

    Paging Anthony Myrick...
    Does YOUR trans have a seal installed at the tailshaft? If so, can you measure the Inside Diameter of that seal...is it 1.375" or 1.5"????

    I'm wondering if my ****** guy put the wrong seal in mine and I'm using the wrong measurement in my search.

    Thanks.
     
    anthony myrick likes this.
  23. I’ll try to in the morning
    I’ll look and see
     
  24. Maybe you could pop the seal out and measure the I.D. of the bushing in the tailshaft.
     
  25. Sent ya a PM. Here’s a pic for the HAMB sleuths. The number came up with wrong measurements on a quick google search
    IMG_6078.jpeg IMG_6073.jpeg
    now the funny part. My dial calipers are MIA so my back up pocket slide is what you see here. Might help
    IMG_6075.jpeg IMG_6074.jpeg
    probably the smallest output I’ve seen.
     
    warhorseracing likes this.
  26. enjenjo
    Joined: Mar 2, 2001
    Posts: 2,780

    enjenjo
    Member
    from swanton oh

    I ran into the same problem on a Jeep output shaft. The yoke they sell has a Toyota application but the spines are cut deeper. I sent the output shaft to Moser engineering and they recut the spline to match the Toyota yoke.. It cost me like $40 to have it done.
     
  27. NoSurf
    Joined: Jul 26, 2002
    Posts: 4,867

    NoSurf
    Member

    Does this mean that pile might make it up to New Hampshire or maybe Maine......?
     
    Deyomatic likes this.
  28. Deyomatic
    Joined: Apr 17, 2002
    Posts: 3,316

    Deyomatic
    Member
    from CT

    That's the idea, old boy!
     
    NoSurf likes this.
  29. Deyomatic
    Joined: Apr 17, 2002
    Posts: 3,316

    Deyomatic
    Member
    from CT

    Well that might be an option...that's WAY cheaper than I would have thought...I have an exploded view diagram somewhere (I think) so maybe I'll see how that looks.
     
  30. Deyomatic
    Joined: Apr 17, 2002
    Posts: 3,316

    Deyomatic
    Member
    from CT

    Yoke #3 does not fit. This one came from CJ Pony parts and in the comments section a customer had said that it fit his 25 spline T10...which is what DeuceMac said he was pretty sure was the application that he used. This shaft is 1.5"...my seal is 1.375"....Anthony's seal is 1.375". Do we have the right seal(s)?

    I found SKF Seals has this Seal Finder page that you can enter measurements so I picked up a couple that I think will work for a 1.375" shaft and ordered one for a 1.5" shaft. Pretty handy website so I figured I'd share it. If my current seal is 1.375" then is that the same size as the bushing in the tailhousing, or would that be closer to 1.5"?

    https://www.skfextranet.com/crsealsfinder/

    I'm about to throw it into the Connecticut River.
     

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