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Thanks for any help.
4 speed, 3.25-1 rear, 26 inch tall tires. What speedo gear to use???
 

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If you have a 7 tooth(black in color) drive gear in tranny it figures out to 17.64 so I would go with a 18. If you have a 6 tooth (pink in color) drive gear go with a 15 tooth.


69 Mach 1 427 Windsor
 

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Nice site RTM I bookmarked it. /forums/images/icons/cool.gif
Now chromedaddyo if you want to do the math yourself then check out this site. fd

BTW in doing the speedo gear calculations the diameter of the tire is needed to calculate how many revolutions the tire turns in a mile. I have found that many tire manufactures have web sites with all of the specifications of their tires including revolutions in a mile. /forums/images/icons/cool.gif But such things are only needed if you are anal like me. /forums/images/icons/shocked.gif /forums/images/icons/tongue.gif
 
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