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Old 12-03-2011, 05:21 PM   #1
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best gears for auto

I was thinking about getting better gears for my stang and I wanted to know which are best for me its a daily driver but I want to be able to getty up also. Any suggestions
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Old 12-03-2011, 05:25 PM   #2
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3.73 or 4.11, 3.73 would give a little better mpg on highway
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Old 12-03-2011, 06:06 PM   #3
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Re: best gears for auto

Yeah my research is telling me 3.73 also
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Old 12-03-2011, 07:00 PM   #4
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Re: best gears for auto

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Originally Posted by davidr_1961 View Post
Yeah my research is telling me 3.73 also
i went 373 and love it...mine is auto too!!
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Old 12-03-2011, 07:39 PM   #5
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I have an 07 mustang does that make any difference?
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Old 12-03-2011, 07:55 PM   #6
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im pretty sure only thing thats matters is whether its a manual or auto
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Old 12-03-2011, 07:59 PM   #7
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Rule of thumb has always been, 4.10 for auto and 3.73 for manual.
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Old 12-03-2011, 08:06 PM   #8
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Quote:
Originally Posted by 93slowstang
Rule of thumb has always been, 4.10 for auto and 3.73 for manual.
4.10s affect ur mpg.
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Old 12-03-2011, 08:34 PM   #9
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Quote:
Originally Posted by LMNO

4.10s affect ur mpg.
Not that much compared to 3.73. My friend didn't even lose a full hwy mpg going from 3.73 to 4.10.
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Old 12-03-2011, 08:42 PM   #10
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Quote:
Originally Posted by 93slowstang

Not that much compared to 3.73. My friend didn't even lose a full hwy mpg going from 3.73 to 4.10.
What year is his stang? Many have reported that they have lost mpg on 2010+ models with 4.10s
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Old 12-03-2011, 10:02 PM   #11
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Quote:
Originally Posted by LMNO

What year is his stang? Many have reported that they have lost mpg on 2010+ models with 4.10s
his was an 02. The rpm difference is only around 200, it's not that significant.
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Old 12-03-2011, 10:51 PM   #12
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This is my next upgrade on my auto '05 v6. Will the 4.10s ruin my top speed? I've driven 140-150km/h once or twice...
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Old 12-03-2011, 10:57 PM   #13
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Quote:
Originally Posted by JBillone
This is my next upgrade on my auto '05 v6. Will the 4.10s ruin my top speed? I've driven 140-150km/h once or twice...
Yes it will bring your top speed down, I don't know much though.
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Old 12-04-2011, 01:09 AM   #14
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Quote:
Originally Posted by 93slowstang

Yes it will bring your top speed down, I don't know much though.
That is what I was getting at next. It will affect ur top speed. I believe 3.73s are the best out of them all especially if ur trying to supercharge ur stang
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Old 12-04-2011, 01:22 AM   #15
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Quote:
Originally Posted by 93slowstang
Rule of thumb has always been, 4.10 for auto and 3.73 for manual.
This is what ive heard as well..
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Old 12-04-2011, 02:35 AM   #16
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Quote:
Originally Posted by 93slowstang

Yes it will bring your top speed down, I don't know much though.
I put 4.10s on my manual GT and my top speed went up by a good bit. Just saying.. People looking for info on gears should use the search feature on the forum. Already some great and recent topics.
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Old 12-04-2011, 03:11 AM   #17
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Quote:
Originally Posted by ColeJohnson

I put 4.10s on my manual GT and my top speed went up by a good bit. Just saying.. People looking for info on gears should use the search feature on the forum. Already some great and recent topics.
If your top speed went up then you had steeper gears in it already....
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Old 12-04-2011, 04:26 AM   #18
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Quote:
Originally Posted by 93slowstang

If your top speed went up then you had steeper gears in it already....
I had stock 3.27 in it before. I was there during the install. I'm not looking to argue, I'm just relaying my results.
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Old 12-04-2011, 04:29 AM   #19
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Quote:
Originally Posted by ColeJohnson

I had stock 3.27 in it before. I was there during the install. I'm not looking to argue, I'm just relaying my results.
Understand that, it just defies how gear ratios work.
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Old 12-04-2011, 10:54 AM   #20
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It make sense for a stock 4.6 on stangs like mine. In 5th we don't reach our entire RPM band and die out around 130ish. But with 4.10s I could power deep enough into my rpm band in 5th to get to a higher hp, and got nearly 145, falling just short of that at 143. On higher performance cars steeper gears will kill the top end.. But mainly stock 4.6s seem to benefit.
Or that's at least how I rationalize it.
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Old 12-04-2011, 12:36 PM   #21
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Quote:
Originally Posted by ColeJohnson
It make sense for a stock 4.6 on stangs like mine. In 5th we don't reach our entire RPM band and die out around 130ish. But with 4.10s I could power deep enough into my rpm band in 5th to get to a higher hp, and got nearly 145, falling just short of that at 143. On higher performance cars steeper gears will kill the top end.. But mainly stock 4.6s seem to benefit.
Or that's at least how I rationalize it.
I was thinking you meant along those lines. Yeah steeper gears help it pull in higher gears.
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Old 12-04-2011, 12:44 PM   #22
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Quote:
Originally Posted by ColeJohnson

I put 4.10s on my manual GT and my top speed went up by a good bit. Just saying.. People looking for info on gears should use the search feature on the forum. Already some great and recent topics.
Can you post a link to that thread you made?
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Old 12-04-2011, 01:43 PM   #23
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Re: best gears for auto

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Can you post a link to that thread you made?
I'll look for it bro, gimme a few.
Studying for finals. :p Lol

Found it:

4.10 Gear Speed/RPM Video
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Old 12-04-2011, 04:07 PM   #24
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Quote:
Originally Posted by ColeJohnson

I'll look for it bro, gimme a few.
Studying for finals. :p Lol

Found it:

4.10 Gear Speed/RPM Video
Great post! Thanks for the info. Think I'm sold on 4.10s. All that's left is to find a deal.
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Old 12-04-2011, 04:38 PM   #25
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Thumbs up Re: best gears for auto

Quote:
Originally Posted by 93slowstang View Post
Rule of thumb has always been, 4.10 for auto and 3.73 for manual.
Thats what I was gonna say.
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Old 12-04-2011, 05:44 PM   #26
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Quote:
Originally Posted by JBillone

Great post! Thanks for the info. Think I'm sold on 4.10s. All that's left is to find a deal.
You're welcome! I hope you enjoy.
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Old 12-04-2011, 06:14 PM   #27
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Re: best gears for auto

definately 3;73s
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Old 12-04-2011, 08:05 PM   #28
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Just curious but how much time on a 1/4 mile or 0-60 are we talking when switching to higher gears. Are we talking several seconds or just a few tenths of a second. Besides track times is someone going to feel the difference between a stock 2.73 gears and 3.73 gears when it comes to daily driving roadway conditions. Just wondering because I have never driven a stang with higher gears than 2.73 which came stock.
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Old 12-04-2011, 08:21 PM   #29
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Re: best gears for auto

if your gonna race the 1/4 mile u definately want the 4:10s, noe sure on the diffrence , but if ur talking stock vs 4:10s then there is no comparison, the 4:10s are made for racing, never raced with stock or 3:73s always higher gears. for daily drivers you will feel the diffrence on take off, plus the traction on taking off is ten times better
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Old 12-04-2011, 08:34 PM   #30
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So if someone was not racing track and using there car for roadway purposes would 3.73 gears be a better choice than the 4.10 gears? Also, does anyone know what the cost would be to purchase 3.73 gear kit not including the installation. Just a ball park. Thanks.
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Old 12-04-2011, 09:15 PM   #31
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Re: best gears for auto

yes the 3:73s would be your best bet. that is if u do alot of highway driving, if u do mostly city driving go with the 4:10s, and they are realitivly cheap to buy. either way u go they will run u less than 200 and another couple hundred to install. you will want a pro to install them. go to americanmuscle.com its the best site out there for mustang parts you can get everything u need for your pony there.
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Old 12-04-2011, 09:24 PM   #32
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Originally Posted by dolfin13
yes the 3:73s would be your best bet. that is if u do alot of highway driving, if u do mostly city driving go with the 4:10s, and they are realitivly cheap to buy. either way u go they will run u less than 200 and another couple hundred to install. you will want a pro to install them. go to americanmuscle.com its the best site out there for mustang parts you can get everything u need for your pony there.
Good deal. Yeah, all my driving is done on highway. I live in a rural area of my state and very rarely get up to Philadelphia or Baltimore. 200.00 dollars, heck that's cheap. I was thinking you were gonna tell me like a grand. Shows you how much I know. Lol. I have a 2011 v6 and did not opt for the performance package, so my pony has stock 2.73 gears. I did get a sct bama tuner for it and currently using the 91 performance tune. Love it. Do you think its worth getting the 3.73 gears. I mean will I feel a difference when I juice it and my pony is pulling.

Correct me if I'm wrong but the 3.73 gears will give better off line acceleration but when already doing 55 and juice it, the higher gears make no difference from the 2.73 gears. Am I correct to think this or not?
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Old 12-04-2011, 10:52 PM   #33
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if you would be in the same gear the 3.73 would put you at a higher rpm and at a higher hp in your hp curve
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Old 12-04-2011, 10:54 PM   #34
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Understand. Thanks!
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Old 12-04-2011, 11:14 PM   #35
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Re: best gears for auto

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Originally Posted by 2011 Kona Blue View Post
Just curious but how much time on a 1/4 mile or 0-60 are we talking when switching to higher gears. Are we talking several seconds or just a few tenths of a second. Besides track times is someone going to feel the difference between a stock 2.73 gears and 3.73 gears when it comes to daily driving roadway conditions. Just wondering because I have never driven a stang with higher gears than 2.73 which came stock.
I didn't read all the replies after this question, but with an experienced driver that knows the car well, a gear swap from stock 3.27 to 4.10 can be a difference of 0.6seconds. That's pretty massive for around $500.

---------- Post added at 11:14 PM ---------- Previous post was at 11:12 PM ----------

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Good deal. Yeah, all my driving is done on highway. I live in a rural area of my state and very rarely get up to Philadelphia or Baltimore. 200.00 dollars, heck that's cheap. I was thinking you were gonna tell me like a grand. Shows you how much I know. Lol. I have a 2011 v6 and did not opt for the performance package, so my pony has stock 2.73 gears. I did get a sct bama tuner for it and currently using the 91 performance tune. Love it. Do you think its worth getting the 3.73 gears. I mean will I feel a difference when I juice it and my pony is pulling.

Correct me if I'm wrong but the 3.73 gears will give better off line acceleration but when already doing 55 and juice it, the higher gears make no difference from the 2.73 gears. Am I correct to think this or not?
2.73 to a 3.73 would be a gigantic difference.. it'll feel like you packed on 80rwhp, I bet. And from a 55mph roll don't even think about it. My buddy has a '88foxbody pushing 409rwhp and 3.55 gears, my New edge is around 255rwhp(conservatively) with 4.10s, and I take him from a 55roll everytime. Don't fear the gear.
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