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Discussion Starter #1
I have a 66 gto with a t-400 trany and 3.23 rear end gears and 245 x 60x14 tires.........speedo doesn't work for lack of correct gear...Any idea what gear ratio I need.......There are about 5 or so different colored gears available. I'm thinking the brown one is the one........39 tooth....
 

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Discussion Starter #5
Sorry.....Maybe I didn't phrase my question correctly.........What info am I not giving you?
 

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Discussion Starter #6
OK......I don't have a speedo gear to do that.........so I guess I'll just have to guess at the gear ratio and buy one to see if it is correct..........then I'll have the info you need to help me.......thanks for your feedback.......
 

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Discussion Starter #11
thanks GTO JUDGE ............I have a 39 tooth gear and will try it in the next few weeks or so...at any rate I will report back on this thread my findings and fixes.........
 
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