V6 (1994-2004) Mustangs Technical discussions on the 3.8L and 3.9L V6 torque monsters

best rear gear for a v6/auto?

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Old 02-25-2012, 12:59 PM
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ramair351
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Default best rear gear for a v6/auto?

2000 3.8/auto, what the best rear gear to run, I still do some highway driving, 3.73? 4.10? 3.55?
i think factory is 3.23 or something...
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Old 02-25-2012, 02:44 PM
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green232
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depends on your actual goal for the car.. are you looking for just a bit more get up and go, or are you planning to do more extensive mods to the car..
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Old 02-25-2012, 02:48 PM
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Fink
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if its a dd that you wanna give more pep to its step, throw in some 3.73s.

if you plan on turboing or vorteching, 3.73 or 4.10

if roots style superchargering, stock gears or 3.55s if you get a 8.8
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Old 02-25-2012, 05:43 PM
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ramair351
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plan on keeping it stock, just a DD. 3.73's?
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Old 02-25-2012, 07:09 PM
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well since you dont have a 5th gear and your rpm is 1800-2000 at 60. 3.73s would be perfect.
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Old 02-26-2012, 05:05 PM
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NeoTokyo
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The general rule is 3.73's for 5spd's and 4.10's for Autos.
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Old 02-26-2012, 05:06 PM
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btw a tuner will REALLY help wake the car up too, not because of power but because of being able to change your shift points and vlp.
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