4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

gear swap

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Old 08-10-2003, 01:57 PM
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gdear66
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Hey folks,</P>


I have an 02 GT and I was looking at swapping out the gears. My car is a daily driver that I am going to start taking to the track (weekend warrior). I can't decide between 3.73, 4.10, and the new 3.90 that I saw Pro 5.0 is selling. Can anyone tell me what my pros and cons are gonna be for each ratio?</P>


Also, is there any particular installation kit that is better than others?</P>
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Old 08-10-2003, 08:07 PM
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Snydaleid
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I have 3.73 and love it. I also plan on getting a blower later on too. 4.10 if you're staying N/A, 3.73 if you plan on getting a blower. Your gas mileage won't suffer as bad as you think. Don't fear the gear.</P>


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Old 08-11-2003, 09:59 PM
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Buzzstang
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i would go with 3.73 for a daily driver.
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Old 08-12-2003, 12:55 PM
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BCisme
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i have 3.73's, and its not too bad on the highway. i get pretty good gas mileage. 300 to a tank easy if it's mostly highway. but say, if i were to be stationed in germany, i'd prob put 3.27's in it, because of course i'd have to get my fix on the autobahn.
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Old 08-12-2003, 07:50 PM
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MineralGreyGT02
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This leads me to my question. What is the stock gear ratio on an 02 GT?
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Old 08-12-2003, 08:09 PM
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gdear66
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Stock on an '02 GT is 3.27:1.
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Old 08-12-2003, 08:55 PM
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MineralGreyGT02
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Thanks.
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Old 08-14-2003, 02:53 PM
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<FONT size=3><FONT color=black><FONT face="Arial, Helvetica, sans-serif">what's up guys just getting ready to put 3'73 gearsin my mustang gt 2002 5 speednow what do i need with out spending a lot of money to fix my </FONT><FONT face=Verdana>speedometer and if i don't fix it will it hurt anything in my computer some one told me it mite mess with my a.lock brakes thanks guys <IMG src=smileys/smiley5.gif border="0"></FONT></FONT></FONT>
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Old 08-14-2003, 03:13 PM
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BCisme
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you need a spedometer recalibrator. many aftermarket chips and tuning programmers offer this, but the best thing would be to find a shop that can install the gears and re calibrate the spedo.<IMG src=smileys/smiley16.gif border="0">
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Old 08-14-2003, 03:58 PM
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stang574
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Yea definetly do the recalibration. Your ECM takes a lot of readings from your VSS and it should be as accurate as possible. Also as far as the install kit goes just make sure you buy a quality one that has the neccassary shims, crush sleeve, ect., to do the job right.
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