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  •  » Which Speedo Gear?

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    4/26/2013 1:28 PM  #1

    MWM
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    Registered: 4/01/2013
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    Which Speedo Gear?

    I replaced my Ford Toploader with a T5 world-class. Do I need change out my speedo gear?
    thanks

     

    4/26/2013 2:45 PM  #2

    Bullet Bob
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    From: Montrose, Colorado
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    Re: Which Speedo Gear?

    If the speedo was accurate with the top loader and the  drive gear on the T5 output shaft is the same as the top loader (seven teeth, I believe) then you just need to transfer the driven gear (end of the speedo cable) from the top loader to the T5....I think.

    Glen at Rose Hill Performance, 281-516-7975, is the resident guru.

    BB

    Last edited by Bullet Bob (4/26/2013 2:47 PM)

    "you get what you pay for, good work isn't cheap, and there are NO free lunches...PERIOD!"
     

    4/26/2013 3:28 PM  #3

    MWM
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    Re: Which Speedo Gear?

    Thanks BB!
    Thats what I thought, just wanted to make sure...

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    4/26/2013 3:44 PM  #4

    GPatrick
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    Re: Which Speedo Gear?

    I can't remember for sure but you may want to check to see if you need a righty or lefty.  I thought that the T-5 used the same gear as the auto trans cars and they were the opposite of the toploader.  I think a way to verify this is to check which side of the transmission the speedo cable is mounted to.  If the toploader and the T-5 are on the same side you are in luck.  If on opposite sides, you may need the gear for the auto trans.  Do you googling on the subject to double-check.

     

    4/26/2013 3:51 PM  #5

    GPatrick
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    Re: Which Speedo Gear?

    OK, so I googled it.  On anther site this guy named Steve posted the following!


    NO, the 4 speed gear has reverse helix from the 3-speed and the C-4 gear. Four speed gear will not work and sticking it in there has a possibility of screwing up the drive gear in the tranny.

    You need a gear from a 3-speed manual, a C-4 auto , or a C-6 auto, or a T5.
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    4/26/2013 3:59 PM  #6

    Michael H.
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    From: Laurel, MS
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    Re: Which Speedo Gear?

    GPatrick wrote:

    NO, the 4 speed gear has reverse helix from the 3-speed and the C-4 gear. Four speed gear will not work and sticking it in there has a possibility of screwing up the drive gear in the tranny.

    You need a gear from a 3-speed manual, a C-4 auto , or a C-6 auto, or a T5.

     

    That is true... The 4-speed toploader speedomer gear is cut backwards from the gear for a C4, T5, 3-speed.  This is because it goes in on the opposite side of the tailshaft from all the others.

    Get a gear for a C4 with the same tooth count as the one from your 4 speed.
    That is what I did when I changed from a 4-speed toploader to a T5.
     

    Last edited by Michael H. (4/26/2013 4:00 PM)

     

    4/26/2013 4:06 PM  #7

    Bullet Bob
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    From: Montrose, Colorado
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    Re: Which Speedo Gear?

    Thanks guys...I hope I didn't lead anyone down the garden path.

    BB

    "you get what you pay for, good work isn't cheap, and there are NO free lunches...PERIOD!"
     

    4/27/2013 4:50 AM  #8

    MWM
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    Re: Which Speedo Gear?

    Good morning everyone!
    I checked my speedo gear again. If the long centrr pin is at the bottom then the threads run from lower southeast corner upper northwest corner and I have a total of 16 teeth with 3.0 in the rear. The speedo itself is white amd the transmission is from a '93 Ford Mustang Cobra. I would like to replace the speedo as a few teeth are worn. Does the above describe the T5 gear correctly?
    thank you

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    4/27/2013 7:29 AM  #9

    GPatrick
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    Re: Which Speedo Gear?

    The link to CJ Pony Parts below shows a variety of driven gears.  If I read your post correctly, you are describing a toploader gear that as stated in posts above will not work in a T-5.  The T-5 uses the automatic transmission type.  The toploader is a type "3A" and the automatics/T-5's are a type "3".  A type 3A will not work in a T-5 and could even damage the gear on the tail shaft.  Contact Glen as suggested above or a catalog site that deals with Mustangs like CJ Pony and order the correct gear that matches your transmission and cable.  Here is the link with pictures....  http://www.cjponyparts.com/1964-1973-mustang-speedometer-gears/c/10190200/

     

    4/27/2013 11:28 AM  #10

    MWM
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    Re: Which Speedo Gear?

    Thanks everyone! Won't be the first time I found something wrong on this car.  I'm just glad I ordered the correct parts before putting back together!

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    4/29/2013 1:47 PM  #11

    Michael H.
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    From: Laurel, MS
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    Re: Which Speedo Gear?

    It's not really that anything was wrong.  The 4-speed gear was the correct part when the 4-speed was in the car, but now that you're changing it to a T-5 you need to change it to the correct gear to match the T-5.

     

     

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