fsterhrse14

Hello Everyone, I am from detroit this is my first post here at the TMS. I drive a 2014 V6 manual mustang. I was planning on putting on the Ford Performance Ring Gear and Pinion Kit - 4.10 Gears. Wanted to understand the effects its going to have on the car? I do know my miles per gallon will go low, but apart from that what gains I can expect out of it? Is it worth the change?

Thank you all.

area5179

It's my understanding that gear sets like the one your looking at are all about acceleration. The higher the ratio, the quicker off the line and the faster you can accelerate. The trade off is your top speed will decrease and you will lose some MPG. If your going to do more drag/autocross or track visits with your car then the 4.10 setup will be a great option. But if your car will be more of a daily driver with occasional track use I wouldn't go more the 3.73. Here's a link with more info https://www.americanmuscle.com/musta...ial-gears.html

5.M0NSTER

Siber Express

4.10's are going to make first gear useless, with the manual I would stay with 3.55's or 3.73's.

David Young

Change your gears, you'll love it Look at the little white sticker on the right side of the pumpkin, it will have the gear ratio on it. You'll need something like an SCT hand held tuner so you can make the speedometer right. Buy a tune from Steeda, Bama or MPT too

fsterhrse14

I use it as a daily driver, with some track sessions.

fsterhrse14

If I understand correctly, with the increase in ratio 3.73's or 4.10's my throw is going down significantly correct? Will the stock shifter handle it?

fsterhrse14

I just checked my VIN and found out that my axle ratio is 2.73. It is going to be a difference if I change it to 3.55 or 3.73.

5.M0NSTER

fsterhrse14

Hello Everyone,
I have a axle back rousch exhaust on my car, and wanted to know best compatible headers for this config?

fsterhrse14

Which would help me add some gain, long tube headers or shorty headers?

WhiteBird00

You should start a new thread when you change subjects - people interested in talking about exhaust systems aren't looking in threads about ring and pinion sets.

In general, long tube headers will give the most performance gains in naturally aspirated engines while shorty headers will produce smaller gains but are easier to install and don't affect ground clearance as much.

David Young

You need to slow down and think about what you are doing or going to do to your Mustang. If you read and research 'most' people have gotten rid of their Roush Axlebacks when going with long tube headers because they become too loud . My Magnaflow Street series became almost 1/3rd louder when I installed my long tubes with a catted x-pipe . Still not to loud but almost

fsterhrse14

Hello Everyone, this is concerning the rear gear and pinion change. I recently got it changed from 2.73 (stock) to 3.55. After the change there is error on my speedometer which is expected. It is 20 miles under. For instance, I am driving at 60 miles/hr but my speedo shows 80. I understand that it needs re-calibration to make the car understand the new gear ration. What kinda off tuner will I have to use if I am trying to do it myself. Would this have to be wheel speed sensor tuning or something else? Really appreciate if I could get some direction on this.

Bert

Any common tuner can do this -- SCT X4 seems to be the standard. Just be careful what other changes you are uploading when you upload the gearing change.

Or, I think you can have a dealer do it for you. If you are only making this one change, and otherwise do not want a tune, that might be the best option for you.