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Old 10-23-2015, 11:07 AM   #36
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If it's a 2013 then and it's stock then you have 3.15's. Do not listen to any of the ones that suggested a gear change since it won't make the car any faster. This is from someone with personal experience and I know a thing or two about how to make these cars fast.
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Old 10-23-2015, 11:53 AM   #37
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If it's a 2013 then and it's stock then you have 3.15's. Do not listen to any of the ones that suggested a gear change since it won't make the car any faster. This is from someone with personal experience and I know a thing or two about how to make these cars fast.
Why no gear change? Usually I see lower ratios for forced induction cars and higher ratios for N/A applications. Does the lower ratio let you avoid an extra shift in the 1/4 or something? Not refuting, just asking for my understanding.

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Old 10-23-2015, 01:20 PM   #38
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Why no gear change? Usually I see lower ratios for forced induction cars and higher ratios for N/A applications. Does the lower ratio let you avoid an extra shift in the 1/4 or something? Not refuting, just asking for my understanding.
These cars do not respond to gear changes unlike previous years. They have 3.15's from the factory because of the steep gearing in the transmissions. When you do the math out with the stock tire size gearing comes in at closer to a 3.65 ratio +/-. If 1/4 mile times are important then anything over a 3.31 gear will have the car shifting into 4th before the stripe and taking the car out of it's power band. Running it out in 3rd is best. A converter makes a world of difference on these cars as well as a good tune.
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Old 10-23-2015, 01:33 PM   #39
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These cars do not respond to gear changes unlike previous years. They have 3.15's from the factory because of the steep gearing in the transmissions. When you do the math out with the stock tire size gearing comes in at closer to a 3.65 ratio +/-. If 1/4 mile times are important then anything over a 3.31 gear will have the car shifting into 4th before the stripe and taking the car out of it's power band. Running it out in 3rd is best. A converter makes a world of difference on these cars as well as a good tune.
That makes sense. Thanks for clarifying.

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Old 10-28-2015, 08:59 AM   #40
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These cars do not respond to gear changes unlike previous years. They have 3.15's from the factory because of the steep gearing in the transmissions. When you do the math out with the stock tire size gearing comes in at closer to a 3.65 ratio +/-. If 1/4 mile times are important then anything over a 3.31 gear will have the car shifting into 4th before the stripe and taking the car out of it's power band. Running it out in 3rd is best. A converter makes a world of difference on these cars as well as a good tune.
grabbar where in CT are you? just closed on my '13 gt with 6spd and was debating swapping the 3.31's for 3.73's
you feel not worth the time/money? weekend/fun car
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Old 10-28-2015, 10:34 PM   #41
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grabbar where in CT are you? just closed on my '13 gt with 6spd and was debating swapping the 3.31's for 3.73's
you feel not worth the time/money? weekend/fun car
He's talking about the auto. If you are a stick then go for the taller gears. If you are auto, going from a 3.31 to a 3.73 isn't just "not worth the money" it'll make you slower.
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Old 11-01-2015, 06:23 AM   #42
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grabbar where in CT are you? just closed on my '13 gt with 6spd and was debating swapping the 3.31's for 3.73's
you feel not worth the time/money? weekend/fun car
I'm in East Haven. I wouldn't switch to 3.73's as they are much to short of a gear combined with the MT82. That's why a lot of guys start off in 2nd gear with those. I would concentrate on other areas for performance.
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Old 11-01-2015, 07:56 AM   #43
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I'm in East Haven. I wouldn't switch to 3.73's as they are much to short of a gear combined with the MT82. That's why a lot of guys start off in 2nd gear with those. I would concentrate on other areas for performance.

I definitely would not run 3:73's with the auto but with the manual MT82 I think they are sweet! Even people I know that were initially against them and ended up doing them later like them. It definitely makes 1st gear optional but I love the way it makes 3rd and 4th feel.


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Old 11-04-2015, 08:06 PM   #44
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He's talking about the auto. If you are a stick then go for the taller gears. If you are auto, going from a 3.31 to a 3.73 isn't just "not worth the money" it'll make you slower.

How will it make you slower??


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Old 11-05-2015, 05:52 AM   #45
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It's been explained at least 2 or 3 times in this thread.

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Old 11-05-2015, 04:36 PM   #46
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These cars do not respond to gear changes unlike previous years. They have 3.15's from the factory because of the steep gearing in the transmissions. When you do the math out with the stock tire size gearing comes in at closer to a 3.65 ratio +/-. If 1/4 mile times are important then anything over a 3.31 gear will have the car shifting into 4th before the stripe and taking the car out of it's power band. Running it out in 3rd is best. A converter makes a world of difference on these cars as well as a good tune.
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How will it make you slower?
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Old 11-06-2015, 07:07 AM   #47
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It's been explained at least 2 or 3 times in this thread.

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How? It just slows your top speed Down that's it.. But who drives over 100???


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Old 11-06-2015, 07:36 AM   #48
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3.73's with the mt82 are perfect. I've driven both and they really wake the car up. Then again I'm the guy with 4.10's in my 03 Cobra and 90 LX. GT will get them soon...I like gears.

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Old 11-06-2015, 08:29 AM   #49
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How? It just slows your top speed Down that's it.. But who drives over 100???


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Have you done any testing on these new cars? The answer is no. Do you even own one of thse new cars? Again the answer is no. So in that regard go out and do your own testing and come back and prove us wrong.
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Old 11-06-2015, 08:57 AM   #50
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How? It just slows your top speed Down that's it.. But who drives over 100???


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You didn't even read the thread did you?
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Old 11-06-2015, 09:37 AM   #51
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How? It just slows your top speed Down that's it.. But who drives over 100???


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Yes, it does bring the top speed in each gear down. But as you can see in Grabber's post below, it will take the car out of its powerband in the 1/4 mile with an extra shift. In everyday driving, it will accelerate more (probably making 1st gear useless depending on the gear you choose), but it will slow you down in the 1/4 mile.

Note that we are talking auto here. The transmission gearing is different in the mt82 which allows for a different optimum gear choice.
Quote:
Originally Posted by Grabber Blue5.0 View Post
These cars do not respond to gear changes unlike previous years. They have 3.15's from the factory because of the steep gearing in the transmissions. When you do the math out with the stock tire size gearing comes in at closer to a 3.65 ratio +/-. If 1/4 mile times are important then anything over a 3.31 gear will have the car shifting into 4th before the stripe and taking the car out of it's power band. Running it out in 3rd is best. A converter makes a world of difference on these cars as well as a good tune.

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Old 11-07-2015, 01:12 AM   #52
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Yes, it does bring the top speed in each gear down. But as you can see in Grabber's post below, it will take the car out of its powerband in the 1/4 mile with an extra shift. In everyday driving, it will accelerate more (probably making 1st gear useless depending on the gear you choose), but it will slow you down in the 1/4 mile.

Note that we are talking auto here. The transmission gearing is different in the mt82 which allows for a different optimum gear choice.



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Great thank you for your clear concise answer you really helped me out


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Old 11-07-2015, 06:33 AM   #53
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Which he just repeated from multiple posts earlier in the thread. 4.10s in a 11+ car is like putting 5.14s in a 10-down car. Which is retarded.
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