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Old Oct 28, 2007 | 01:18 PM
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New speedometer

I figure its time for a change to my instrument cluster. Im looking to install equus performance guages but im having troubles with understanding the installation of the speedometer. The product says its a 1:1 drive 95km/h at 1000 rpm, im realy not sure what that means. I know you can get different gears for the speedo cable at the transmission. I was was wondering if mabey someone else has installed this product berfore and could help me out with what you did. Im just not to sure how to go about this. I have a 78 F100 2wd 302 with a c4, might change to a c6 later.
 
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Old Oct 28, 2007 | 02:35 PM
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The speedo is calibrated for 60 MPH with a head speed of 1000 rpm.


Getting the correct plastic driven gear would still hav to be done.
 
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Old Oct 29, 2007 | 10:09 PM
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Do I have to change anything in the trans at all or is it just a little insert that goes on the end of your speedo cable and into the trans?
 
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Old Oct 29, 2007 | 11:51 PM
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Just the driven gear that attaches to the speedo cable into the trans
 
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Old Oct 31, 2007 | 08:26 PM
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Im assuming you can get the different driven gears from the local parts store?
 
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Old Oct 31, 2007 | 08:45 PM
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Yes and they are color coded for the amount of teeth they have.

http://www.tciauto.com/Products/Tech...eedo_gears.asp
 
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Old Oct 31, 2007 | 11:15 PM
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how do you figure out which one you need
 
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Old Nov 1, 2007 | 10:59 AM
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Tire size and rear axle ratio.

If everything is stock then I can give to the application .....but if all is stock what gear is in there now should work.
 
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Old Nov 1, 2007 | 08:03 PM
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do they make different speedo cables for the c4 with different ends on them for fitting on the speedometer itself such as a threaded connection?
 
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