speedo gear

Hi i was worndring if someone could tell me witch speedo gear i need ? I have a 68 chevelle 4 door i took out the 250 6 cyl with a powerglide and replaced it with a 350 motor and a th 350 trans. i put on bfg 235/60R15 tires it has 3.08 gears the speedo reads higher then i am going any help would apreshated .

Try this link:

http://chevelleengineer.home.comcast.net/~chevelleengineer/speedo.htm


Good luck, sounds like you might want to also find the diameter of your tire too.

Tom


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