Top Loader 4sp.Question

Discussion in 'General Maverick/Comet' started by actionrpm, Nov 3, 2008.

  1. actionrpm

    actionrpm Differential specialist

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    Put the Windsor in the Mav Saturday,and bolted up the scatter shield to put the Top Loader in.The trans. is out of a '65 289 Mustang and I found it takes a 25 spl. yoke with a 1.500 O.D.at the seal.compared to all the other Top Loaders I've had thats an odd spline,anyone have a yoke,or know where I could find one? Spicer does not make one,and all my suppliers say no...any old Mustang guys out there with One...Thanks Jack
    SEE LAST ENTRY
     
    Last edited: Nov 9, 2008
    actionrpm, Nov 3, 2008
    #1
  2. Mavaholic

    Mavaholic Growing older but not up!

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    CJ Pony Parts sells a 25 spline yoke for $90. Their part # is YK1
     
    Mavaholic, Nov 3, 2008
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  3. spork1o1

    spork1o1 Member

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    The 25 spline top loader output shaft is prone to failure.
     
    spork1o1, Nov 3, 2008
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  4. ratio411

    ratio411 Member

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    Agreed.
    Remanufacturers, like David Kee Toploaders for example, junk the 25 spline shafts when they rebuild the trannys.
     
    ratio411, Nov 4, 2008
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  5. bmcdaniel

    bmcdaniel Senile Member Supporting Member

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    If I remember correctly that small yoke was also used in some early to mid 60s 6 cylinder/3-speed applications.
     
    bmcdaniel, Nov 4, 2008
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  6. Dan Starnes

    Dan Starnes Original owner

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    Been running the same 25 spline for 30 years in my Stallion. No problems, ever.
    Dan
     
    Dan Starnes, Nov 4, 2008
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  7. bmcdaniel

    bmcdaniel Senile Member Supporting Member

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    Yep, I ran one of those for a lot of years, too. The problem isn't so much the small splines but the small, tapered tranny output shaft.
     
    bmcdaniel, Nov 4, 2008
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  8. Dan Starnes

    Dan Starnes Original owner

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    Yeah, I dont think they will withstand lots of horsepower but my low 300 hp or so car broke the 8 " rear, which I considered the weakest link in my drivetrain. Now I think the trans is the weakest link,, besides me lol.
    Dan
     
    Dan Starnes, Nov 4, 2008
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  9. rthomas771

    rthomas771 Member

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    The six cylinder yoke is too small in diameter to fit the Toploader. The T-10 used the 25 spline yoke. I hammered my old T-10 for 32 years with no yoke problem.
     
    rthomas771, Nov 4, 2008
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  10. actionrpm

    actionrpm Differential specialist

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    Thanks for all the replies guys,all my other Toploaders were 28 spl.and I never had any trouble with them.I found a couple Mustang places showing they stock a 25 spl. yoke,but so far no one has one in stock to measure O.D.for me,they all say they may have one in a couple weeks,I didn't try the place you mentioned Mavaholic,I'll give them a call.I really don't know how that small shaft will hold up to my 357 W,I know it's over 425hp,I guess I'll start looking for a spare 28 spl. Trans.
     
    actionrpm, Nov 5, 2008
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  11. actionrpm

    actionrpm Differential specialist

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    Called all the Mustang places,finally found someone that actually stocks the yokes that are on their site,they are all 1 3/8 O.D. Found a guy in Dearborn that sells nothing but new and used yokes,he knew exactly what I need,although he does not have one,he said they are really hard to find...SOOO Maverick /Ford guys,take a look in your stash and see if anyone has one they will part with...A rear YOKE for a 4 Sp.Toploader trans. ,25 spline,1.500 O.D.1310 ujoint size (3 1/4 x 1 1/16 cup) Thanks Jack
     
    actionrpm, Nov 9, 2008
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