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im using this calculator to figure out what gear i will need on the speedo cable does any one know on a 67 xr7 how many times the cable has to spin before it registers 1 mile the calculator used examples such as 940,960,1000 x's it is suposidly stamped on the speedo and im sure mustang would use the same amount of revolutions a cougar does to register 1 mile but wanted to order the gear soon before i have to take my car apart so i have all the parts in hand btw here the link so the rest of u can figure it out as well!
http://www.bgsoflex.com/speedo1.html
 

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1000 is correct (same as Mustang).

What tranny do you have? That will change the 'drive' gear from 7 to 8 depending on model.
 
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