what speedo gear do I need? - TCCoA Forums
 
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post #1 of 4 (permalink) Old 04-24-2012, 01:41 PM Thread Starter
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what speedo gear do I need?

car was a 3.08 bird, now 4.10 with 275/60r15 tires.

Thanks,
David
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post #2 of 4 (permalink) Old 04-24-2012, 02:18 PM
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http://forums.tccoa.com/showthread.php?t=132130
http://www.mn12tech.com/tire-calculator.php

I may modify the tire calculator to include speedo gear calculations as well, we'll see.

-Brandon
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post #3 of 4 (permalink) Old 04-24-2012, 02:50 PM Thread Starter
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if you could that would be awesome, i ended up finding a website after i posted that said i needed a 25 tooth..... be nice to know how far off i am with a black one.
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post #4 of 4 (permalink) Old 04-24-2012, 02:53 PM
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I updated it locally, now I am just waiting on Swanny to get back to me so I can send him the updated file to host.

The formula I programmed was the one master486 provided; assuming the stock 7 tooth output shaft, running the numbers it comes out to a 28" tall tire and a 21 tooth gear.

-Brandon
97 Laser Red Thunderbird LX 162k, Stage 2 4.6L 2v N/A | 300 BHP (255 RWHP, 290 RWTQ) | 13.95 @ 97.58 | Build details | Pics at the Lorain Assembly plant
98 Black Mark VIII 160k, stock daily driver
07 Redfire Fusion V6 SEL 178k, for the wife
Gone but not forgotten: 96 Mark VIII, 94 Cougar XR7, 93 Mark VIII

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