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2012 GT 3.73 Gear advantages?

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Old 12-01-2011, 12:47 AM
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jayslick1
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Default 2012 GT 3.73 Gear advantages?

Experienced guys and gals, please explain the advantages of the 3.73 over the rest? I appreciate it.
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Old 12-01-2011, 10:03 AM
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siggyfreud
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You accelerate quicker.
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Old 12-01-2011, 10:49 AM
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ZPounds07GT
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Really and truly most things in the car world are preference and from what many say, that's how it goes for gears. Some people prefer the 3.73 to 4.10.

3.73 will be quicker acceleration than stock but have less top end pull. 4.10 will be quicker than 3.73 but have even less top end pull. That's about it.

Depends on what you want more.
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Old 12-01-2011, 11:05 AM
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BigDinTexas
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Your MPG will suffer going from 3.55 to 4.10, but we drive mustangs so who cares...

Don
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Old 12-01-2011, 11:18 AM
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CubanoGT
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Before I bought my car I test drove one with 331 and let me tell you how slow it felt, right away I told the sales man 373 lol your top end will come quicker than with a lower gear but it won't suffer lol and we are talking about 160mph speeds here....
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Old 12-01-2011, 12:28 PM
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ZPounds07GT
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Originally Posted by CubanoGT
your top end will come quicker than with a lower gear but it won't suffer lol and we are talking about 160mph speeds here....
Wouldn't it still not pull quite as hard at the top end or does the butt dyno lie in that respect? Lol.
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Old 12-01-2011, 08:32 PM
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brycerichert
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Originally Posted by ZPounds07GT
Wouldn't it still not pull quite as hard at the top end or does the butt dyno lie in that respect? Lol.
Just go the the next gear. "Pulling" at 140 isn't something many need to worry about.
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Old 12-02-2011, 09:17 AM
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Originally Posted by ZPounds07GT
Wouldn't it still not pull quite as hard at the top end or does the butt dyno lie in that respect? Lol.
If you're NA,, The 3.73's and 4.10's will pull hard all the way to the point where your car stops going faster due to drag ... The ole' drag limited factor .. Theoretically that speed should be the same for either the 2.73/3.55/3.73/4.10 rear gear ...

Going lower than 4.10's I can see you running out of gear ,, limiting your top speed unless you run a tall tire or higher OD transmission ratio .

My 2010 GT with 3.31's was drag limited to 155-ish, at 6000rpm in 4th, or 4500ish in 5th ... The car would not go any faster ...

With the SC'er and 3.31's I had to let off at 165 as the car was still pulling hard ... I have no doubt the car would've went to 180+ ... but the car was a dog coming off the line even with nearly 500rwhp with 3.31's .. so in went 4.10's

With the 4.10's installed and a set of Comp Cams and I have no doubt I can still run 180ish flat out to where the cams stop making power and the drag limit hits ...

.
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Old 12-02-2011, 10:37 AM
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mph07alloy
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Plain and simple, 3.73 = quicker acceleration, but don't expect to see the window sticker's advertised mpg of 17 city / 26 hwy, I get around 12-14 city 20-23 hwy.
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Old 12-02-2011, 01:29 PM
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Thrashard340
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Just speaking in generic terms with regards to gears -

The higher the numerical number, the quicker the car accelerates and the lower the top speed. This is assuming all other variables are equal (engine HP/TQ, transmission and tire size). The higher numerical gear is allowing the engine to reach redline quicker. Which is also why gas mileage decreases.

So all things being equal, a 4.10 geared car will accelerate quicker than a 3.31 car. The 3.31 car @ 60 MPH cruise may show 1,900 RPMs (guess), while the 4.10 car will show 2,500 (guess) RPMs at the same speed. See the relationship? So inherently, the car with the higher numerical rear end ratio will use more gas and have a lower top speed (assuming the 3.31 geared car can achieve top speed).

I short, with a higher numerical gear, you are gaining incremental acceleration while losing incremental top speed and gas mileage.
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