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Old 04-16-2012, 11:23 PM   #1
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automatics' gear ratios

Anybody out there running a different gear ratio on an automatic sixer? I've heard some differing opinions. Seems to me the steeper 4.10 would get the worst mileage, but I've heard some say it fits the transmission's shift points better and actually gets better mileage. I drive about 72, 67, and 57 mph most of the time. Can anybody provide some real world comparisons?

THANKS!
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Old 04-16-2012, 11:37 PM   #2
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The steeper your gears are, the higher your rpms will be!... Meaning you'll lose mileage!..
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Old 04-16-2012, 11:40 PM   #3
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Re: automatics' gear ratios

That's what my thought was, the only exception would be if you dropped to the next gear, ie 4th from 3rd, and went from say 3500 rpm to 2500 rpm. I'm pretty sure i'm on my last gear on highway speeds already, so that's why i have a hard time believing 4.10s could be better
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Old 04-17-2012, 12:22 AM   #4
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They are better for acceleration!.. And that's it!.. Lol
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Old 04-17-2012, 11:15 AM   #5
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So what should you get if you want getty up and go but not lose your top end pull and speed?
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Old 04-17-2012, 03:48 PM   #6
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Originally Posted by Mr. SoloDolo
So what should you get if you want getty up and go but not lose your top end pull and speed?
In my opinion you would need a custom built tranny for that!.. Gears alone will not get you both!... Lol
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Old 04-17-2012, 09:53 PM   #7
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Quote:
Originally Posted by Eturner

In my opinion you would need a custom built tranny for that!.. Gears alone will not get you both!... Lol
3.73s are the best "all around" gears you can get
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Old 04-18-2012, 06:55 PM   #8
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Re: automatics' gear ratios

for sure
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Old 04-18-2012, 10:08 PM   #9
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3.73s are the best "all around" gears you can get
Thanks man exactly what I needed to know
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