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Old 11-14-2012, 06:55 AM   #1
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1LE vs non-1LE - How noticable is performance?

For those of you that have upgraded your SS to a new 1LE. How much of a difference is there in performance with the gearing? I know track wise it is probably a no brainer, but I'm just wondering the feel with the 3:91 and different geared trans. I know it won't be the same, but I have been considering go to the 3:91 and just want to hear some of your thoughts. How much harder does it pull?
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Old 11-14-2012, 06:58 AM   #2
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to add to this question any idea on what mileage you are getting yet?
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Old 11-14-2012, 08:37 AM   #3
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I've never ran 3.91's...but on my 4th gen (which also came with 3.42s)...moving to 4.30's and 4.56's made a tremendous difference for me. From a mathematical perspective, 3.91's only offer a 13% increase in torque multiplication. I'm sure you can feel the improvement in acceleration...but nothing like what the 4.30/4.56s offered.
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Old 11-14-2012, 08:55 AM   #4
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Originally Posted by Ebbsnflows View Post
I've never ran 3.91's...but on my 4th gen (which also came with 3.42s)...moving to 4.30's and 4.56's made a tremendous difference for me. From a mathematical perspective, 3.91's only offer a 13% increase in torque multiplication. I'm sure you can feel the improvement in acceleration...but nothing like what the 4.30/4.56s offered.
I just dont want to lose drivablity. I don't drag the car much... maybe once or twice a year. What scares me is that I will do it and hate it. My brother and I surprized my dad a couple years ago and had 4:10's put in his mustang. I actually think that we slowed the car down because you have to shift so quick out of 1st gear. I know the gearing in our trans is completely different... I just don't want to make a mistake.
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Old 11-14-2012, 10:59 AM   #5
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Yeah TTT I have been wondering about this too. Very tempting mod
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As long as it has enough horsepower, I don't really care if it's a 4, a 6, an 8, or a 10.
And I don't really car how they make the horsepower, whether it a Turbo, supercharged or just a whole lot of hamsters.
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Old 11-14-2012, 05:57 PM   #6
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Old 11-14-2012, 09:15 PM   #7
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I think 3.91's would pull way harder in your car than a 1le. The 1le has different gearing in the MN6 transmission. The math has been done a few times on the forum. I am looking forward to finding out first hand soon!!
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Old 11-15-2012, 07:24 AM   #8
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I think 3.91's would pull way harder in your car than a 1le. The 1le has different gearing in the MN6 transmission. The math has been done a few times on the forum. I am looking forward to finding out first hand soon!!
You are saying that the 1LE has a different transmission than the SS? Do you know them or have a link to them?
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Old 11-15-2012, 07:28 AM   #9
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You are saying that the 1LE has a different transmission than the SS? Do you know them or have a link to them?
I know the gearing is different. There was a thread somewhere a while back comparing the standard SS trand to the 1LE. I will try and find it. If you just look at the specs on the 1LE vs the SS it stated the different gear ratio.
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Old 11-15-2012, 07:30 AM   #10
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You are saying that the 1LE has a different transmission than the SS? Do you know them or have a link to them?
Im pretty sure the transmission is the same. The auto and manual are obviously geared different but that has nothing to do with a 1LE. AFAIK just the gear swap and suspension.
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Old 11-15-2012, 07:31 AM   #11
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Im pretty sure the transmission is the same. The auto and manual are obviously geared different but that has nothing to do with a 1LE. AFAIK just the gear swap and suspension.
I don't think that is true. If I remember, the 1LE specifically has different gearing in the trans along with the 3:91 rear end.
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Old 11-15-2012, 07:32 AM   #12
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The transmission is different than the standard SS. It is a close ratio manual trans. I don't have the ratios in front of me but if I have time later I will look it up and post it here for you.
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Old 11-15-2012, 07:40 AM   #13
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Originally Posted by newagemuscle View Post
I don't think that is true. If I remember, the 1LE specifically has different gearing in the trans along with the 3:91 rear end.
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The transmission is different than the standard SS. It is a close ratio manual trans. I don't have the ratios in front of me but if I have time later I will look it up and post it here for you.
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Well I stand corrected. I never saw that mentioned before. Guess I cant do a true conversion unless I get a tranny too...well and i have an auto. I intend to add the suspension and 3.91 to my car though.
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Old 11-15-2012, 07:43 AM   #14
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Thanks Comrando, you have a much better representation of the information than I had.
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