T O P I C R E V I E W
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kkd
Member # 4356
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posted
I'm running 3.73's and need to know what speedo drive gear to run. My T-5 was opened up and the gear inside has been changed from a 7 to a 6 tooth. So,I'm guessing, would I use a 21 tooth drive gear? Anyone know by experience or know of the website that has the formula to use to calculate? I have been told that you measure the circumference of your tire and plug the numbers into a formula and it spits out the speedo drive gear for you. But, geez it has had to have been done thousands of times by members here. I am running 3.73's in my 8.8 with 255/40/17 tires in my 1991.
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PWR HNGRY 302
Member # 6000
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posted
Iam running the same gears in 8.8 with a t5 and i used a 21 tooth speedo gear from 50 resto and i think there is a link if you scroll down a little that tells you about the different speedo gears.
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kkd
Member # 4356
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posted
Thanks a bunch!
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PWR HNGRY 302
Member # 6000
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posted
No problem.
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Hungry Hippo
Member # 537
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posted
with a 6 tooth drive gear you need an 18t speedo gear
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blind
Member # 3052
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posted
quote: Originally posted by Hungry Hippo: with a 6 tooth drive gear you need an 18t speedo gear
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21t would work if you hadn't changed the drive gear.
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