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RUG-S, RUG-AE, RUG-AE1 What is the difference??

Discussion in '1965-1970 Shelby Mustang GT350 & GT500' started by James427, Sep 16, 2006.

  1. Sep 16, 2006 #1
    James427

    James427 Member

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    These are all listed for 68 Mustangs with 428's. Are some Shelby only? What would be the difference in application (which car they came in from the factory) between these trannys??? Was one for a 68CJ GT?
     
    James427, Sep 16, 2006
    James427, Sep 16, 2006
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  2. Sep 16, 2006 #2
    Coralsnake

    Coralsnake Well-Known Member

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    They are all variations of the 4spd toploader. Each code signifies a different transmission. Each transmission has a specific application. The RUG-S was used on 68 GT500s, the RUG-AE on 68 428 CJ cars, and the RUG-AE1 on 69 428 CJs. They were all used on Shelbys. :guitar:
     
    Coralsnake, Sep 16, 2006
    Coralsnake, Sep 16, 2006
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  3. Sep 16, 2006 #3
    James427

    James427 Member

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    Great info! Is there a website to access such info? Would you by any chance happen to know what the tailshaft casting number should be on a RUG-S?? I've got a guy that wants to trade me one and I want to make sure it is correct.
     
    James427, Sep 16, 2006
    James427, Sep 16, 2006
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  4. Sep 16, 2006 #4
    Coralsnake

    Coralsnake Well-Known Member

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    Coralsnake, Sep 16, 2006
    Coralsnake, Sep 16, 2006
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  5. Sep 16, 2006 #5
    James427

    James427 Member

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    I had looked at all of the toploader websites including that one. None of them listed the tailshaft that this tranny has. It is (I think because the casting is not clear)

    C8OR-7A040-D

    I can't find any info on it. I'm going to check out your website now!
     
    James427, Sep 16, 2006
    James427, Sep 16, 2006
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  6. Sep 16, 2006 #6
    Coralsnake

    Coralsnake Well-Known Member

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    I can get you the casting number off one I have, just drop me an email. I will look at it tomorrow:ph34r:
     
    Coralsnake, Sep 16, 2006
    Coralsnake, Sep 16, 2006
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  7. Sep 17, 2006 #7
    TLEA

    TLEA Well-Known Member

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    Ah don't listen to that Coralsnake guy, he's clueless about non KR 500's:laf:
    From memory the tailshaft on a RUG S is a C6 and all of the mainbodies I've seen are C8's although I've been told they could have a C5 mainbody but I think they would have would have been the 67 versions.
    Tim
     
    TLEA, Sep 17, 2006
    TLEA, Sep 17, 2006
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  8. Sep 17, 2006 #8
    James427

    James427 Member

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    The one I'm talking about could be a C6 because the casting is so unclear (is that normal?) I'll have it in hand in about a week to do some closer investigating. But what about the "D" at the end of the number? Most of the tailshaft numbers I've seen posted are not a "D" for a shelby tailshaft.
     
    James427, Sep 17, 2006
    James427, Sep 17, 2006
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  9. Sep 17, 2006 #9
    TLEA

    TLEA Well-Known Member

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    I think you will find most websites show it as a C6 E. I seem to recall that is incorrect. I am not at home but when I get home later tonite I will check mine. The best source of data is as always, the cars themselves.
    Tim
     
    TLEA, Sep 17, 2006
    TLEA, Sep 17, 2006
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  10. Sep 17, 2006 #10
    Coralsnake

    Coralsnake Well-Known Member

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    That last poster is clearly trying to bait me. :mad:
    I like the C60R-D tailshaft answer. Only because I have one that is numbers matching to #1628. Hi Tim!
     
    Coralsnake, Sep 17, 2006
    Coralsnake, Sep 17, 2006
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  11. Sep 17, 2006 #11
    TLEA

    TLEA Well-Known Member

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    Not really. Just the grasshopper being mischievous:D
     
    TLEA, Sep 17, 2006
    TLEA, Sep 17, 2006
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  12. Sep 18, 2006 #12
    BillH

    BillH Well-Known Member

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    From my experience having had a LOT of them apart, they have in common;
    2.36 Low gear, Ford's version of a close ratio transmission.
    1 3/8" Diameter ten spline input shaft.
    a 31 spline main shaft.
    Due to their heavier duty, larger gears these transmissions do not shift as fast at the T-10. There are a number of modifications that can improve on this.
     
    BillH, Sep 18, 2006
    BillH, Sep 18, 2006
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