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Old 08-02-2013, 03:49 PM   #1
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Gear ratio

How is it going guys? I'm not sure what gear ratio should I put in my mustang gt 2003? What ratio do you guys recommend? I have stage 1 clutch, flow master, intake, and under drive pulleys. Any suggestions?
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Old 08-02-2013, 03:50 PM   #2
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Manual 3.73 auto 4.10

Try to get a tuner too so you can input the proper gear ratio and keep the odometer and speedo accurate
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Old 08-02-2013, 03:59 PM   #3
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Do I have to get a tuner too? It's not going to be same if I just put the gear? What I'm trying to do is upgrade little by little because the big bucks
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Old 08-02-2013, 04:01 PM   #4
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No but the new gear ratio will offset your speedometer and make your mileage be inaccurate. There are other ways but for the $ getting a tuner is worth it but no you dont need one if your fine with it.
Id go tuner first then buy gears after
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Old 08-02-2013, 04:12 PM   #5
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Ok any recommendation for a tuner? What other upgrades do you recommend?
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Old 08-02-2013, 04:16 PM   #6
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Midpipe if you only have a catback, subframes other suspension work. Check the bolt ons sticky and choose which ones you would like to do.
And go with am's sct bama tuner. Mines on the way.
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Old 08-02-2013, 08:12 PM   #7
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Quote:
Originally Posted by MidnightBlueGT View Post
No but the new gear ratio will offset your speedometer and make your mileage be inaccurate. There are other ways but for the $ getting a tuner is worth it but no you dont need one if your fine with it.
Id go tuner first then buy gears after
+1 my speedo was WAY off after I had my 4.10s installed. Tuner brought it all together, worth getting before gears. I do alot of highway driving and my 4.10s do just fine on the highway. Personal preference, but I dont think i would have been satisfied with 3.73, but no plans on FI for me.
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