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3.90 gears

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Old 03-19-2007, 02:37 PM
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Default 3.90 gears

I have an LT1 trans am. I want to know how much the 3.90 gears will improve my quarter mile time. how much time would they shave off.
Old 03-19-2007, 06:54 PM
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what do you have now???????
Old 03-19-2007, 08:32 PM
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I have 3.23 gears with an auto 4 tranny




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