4.10 gear ratio - Mustang Evolution

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Old 11-10-2014, 12:36 PM   #1
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4.10 gear ratio

Can someone explain 4.10 gear ratio and how I can do it to my car and what I will need? I keep hearing about it being one of the best bang for my buck I can do to my car
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Old 11-10-2014, 01:35 PM   #2
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It will speed up your rpms , and you will feel it pulling a lot harder.
Not a tech answer but it's deff worth it lol

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Old 11-10-2014, 01:37 PM   #3
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What do I need to install?
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Old 11-10-2014, 01:44 PM   #4
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Quote:
Originally Posted by Jay180 View Post
What do I need to install?

Take it to a shop.


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Old 11-10-2014, 02:27 PM   #5
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Would it be hard to install gears in the driveway on jack stands with proper tools but no air tools?


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Old 11-10-2014, 02:44 PM   #6
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What do I need to install?
Just get fluid , additive too..

You don't really need to change the bearings unless they are bad.
Get a new crush washer , and that's really it.

It's NOT That Hard To Do The install..But Recommend Taking It To Shop. Install is usually 250-300.



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---------- Post added at 03:44 PM ---------- Previous post was at 03:43 PM ----------

Your going to need a 1/2 impact to remove the ring gear and what not.. hand tools would be hell.

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Old 11-10-2014, 02:47 PM   #7
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If you know how to install it and have all of the proper tools it can be done..... If you have never done it before I recommend a shop


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Old 11-10-2014, 06:59 PM   #8
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for a better answer, its your final drive ratio. they usually reccomend 4.10 for auto transmission. 3.73 if its a manual.

what it does is change the ratio of your gear in your rear axle. id try to explain the relation between your engine rpm and your tire rpm but odds are im gonna get it backward.

as far as what you would feel, youl accelerate faster but your rpms will also rise faster. 2000 rpm on the highway will change from 70mph to somewhere in the 60s. you will need to tune your car so that your speedometer is correct as well.
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Old 11-10-2014, 07:16 PM   #9
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I have a manual so I'd have to go with the 3:75 then

---------- Post added at 06:15 PM ---------- Previous post was at 06:15 PM ----------

3.73

---------- Post added at 06:16 PM ---------- Previous post was at 06:15 PM ----------

3.73
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Old 11-10-2014, 07:42 PM   #10
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Keep in mind with 3:73/4:10 gears you're gonna be running a lot higher rpm at higher speed. Be sure you want this before you do it.

The install is not hard. You'll need a dial indicator and know how to use it. Also a torque wrench that measures in inch lbs (as low as 20 I think). And a torque wrench measuring in ft lbs. you'll obviously need a press as well. Most people don't have all of this. If you do, follow the how to on American muscle and get after it.

I just did 4:10s in my 5spd recently. If this was my dd I honestly wouldn't do it though I know a lot of people do.
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Old 11-11-2014, 08:04 PM   #11
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Well my mustang is my daily driven car and I want to be decently fast like around 330HP and I kept reading that having a 4.10 gear ratio is the best bang for you buck if you want to mod your car
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Old 11-13-2014, 11:37 AM   #12
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373 are a waste , 410 ftw

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Old 11-13-2014, 11:52 AM   #13
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You can't go by the whole 3.73 for manual and 4.10 for auto that reliably. And Slow4v has a Mach 1 and revs 1k rpm higher than a GT so 4.10s are better for him.

What i recommend is finding the best rpms for what you want. 4.10s are amazing around down, but at higher speeds you run out of gear quick, i redline 4th at 110, then after that i've got no acceleration. At autocrosses my 4.10s are perfect though, but when i start to do road racing i'll either need a taller tire or i'll need to drop down to 3.73 to get a little more mph out of it.

You will also be revving a lot higher on the highway when cruising. At 80mph i'm at around 2800rpm. That is with a .68 overdrive ratio.
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Old 11-13-2014, 12:38 PM   #14
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If the rest of my family didnt live almost 200 miles away, then i would have 3.73 in mine. but i also do any non emergency car work over there as well, so i need the gas mileage. as well as being able to go 70mph under 2k rpm so not to piss off the fiance with all the noise. :/


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