3.55s or 3.73s - Mustang Evolution

Go Back   Mustang Evolution > 4 Cylinder | V6 | Classic Mustangs || Tech and Talk > 2011-2014 V6 Mustang



Reply
 
Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 05-04-2016, 08:32 AM   #1
Registered Member
Regular
 
Slickmullet's Avatar
 
Join Date: Apr 2016
Location: Alabama
Region: Alabama
Posts: 264
3.55s or 3.73s

My mustang is not my daily driver but I like taking it on the occasional long trip. I don't really track it or anything. Going from 2.73s, what's the best gear fit for me?
Slickmullet is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 05-04-2016, 09:14 AM   #2
Registered Member
Regular
 
Join Date: Sep 2014
Location: Locust grove
Region: Georgia
Posts: 372
Auto or manual?


2013 mustang v6 premium package
Powder coated gold metallic wheels
MPT ghost cam tune
Quarter window louvers
3.55 gears manual

2008 fz1
Chris44117 is offline   Reply With Quote
Old 05-04-2016, 09:27 AM   #3
Registered Member
Regular
 
Join Date: Apr 2016
Location: Tampa Bay area
Region: Florida
Posts: 92
I've had this quandary for some time too, I actually just want 3.55 but mine came with the 3.31s so it almost a waste to not go at least 3.73.

If it your DD id say 3.55, if it a weekend cruiser go 3.73 or even 4.10.
Wheela is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 05-04-2016, 09:36 AM   #4
Registered Member
Regular
 
Slickmullet's Avatar
 
Join Date: Apr 2016
Location: Alabama
Region: Alabama
Posts: 264
Manual
Slickmullet is offline   Reply With Quote
Old 05-04-2016, 09:38 AM   #5
Registered Member
Regular
 
Ferr's Avatar
 
Join Date: Jan 2015
Location: Holmdel
Region: New Jersey
Posts: 59
Quote:
Originally Posted by Wheela View Post
I've had this quandary for some time too, I actually just want 3.55 but mine came with the 3.31s so it almost a waste to not go at least 3.73.



If it your DD id say 3.55, if it a weekend cruiser go 3.73 or even 4.10.


Same here. I agree that upgrading to 3.55 is kinda pointless when we already have 3.31s.

But OP, if mileage doesn't matter to you I'd go with 3.73 or even 4.10 if your car is auto. If you don't want to kill your mileage too much go with a 3.55 or 3.31. I avg 19.6 mpg in my car with 3.31s but I get the usual 30+ on the highways if I try too. Most of my driving is town/back roads with some city driving. Keep in mind I'm also not trying to get good mpg when I drive. I step on it a lot and I let my car warm up before I drive it too which causes my mpg to be worse.

I think 3.31s wake the car up a good amount, my car definitely isn't a slouch. However 3.73s would be a significant difference over 3.31s.


Sent from my iPhone using Mustang Evolution
Ferr is offline   Reply With Quote
Old 05-04-2016, 09:59 AM   #6
Registered Member
Regular
 
Mugeismo's Avatar
 
Join Date: Dec 2015
Location: Detroit
Region: Michigan
Posts: 232
You can take my opinion with a grain of salt, but I find some validity to it.

I thought I had 2.73 gears, but it turns out I have 3.31. Personally, I feel they're not enough. Nor do I feel like 3.73 would be a significant enough change. Granted I do have a completely stock motor and tune. So the tune may be to blame more than the gears. I will probably go with 4.10 when I do my tune (after warranty expiration).

My truck had similar motor (4.0L V6), weight, horsepower, torque, and a 3.35 ratio. That thing could've walked my Mustang without breaking a sweat.
__________________
2016 Nissan Rogue - daily driver
1995 Ford Mustang GTS - cruise project
Mugeismo is offline   Reply With Quote
Old 05-04-2016, 09:59 AM   #7
Registered Member
Regular
 
Slickmullet's Avatar
 
Join Date: Apr 2016
Location: Alabama
Region: Alabama
Posts: 264
What kind of mileage are we seeing with 3.73s?


Sent from my iPhone using Mustang Evolution
__________________
2012 Race Red 3.7 Coupe: Steeda CAI and 93 Steeda Tune / Borla S-type Axle-Backs / Boss Strut Tower Brace / FRPP 3.55

Slickmullet is offline   Reply With Quote
Old 05-04-2016, 10:00 AM   #8
Registered Member
Regular
 
Slickmullet's Avatar
 
Join Date: Apr 2016
Location: Alabama
Region: Alabama
Posts: 264
I definitely have the 2.73s, sticker on the differential.


Sent from my iPhone using Mustang Evolution
__________________
2012 Race Red 3.7 Coupe: Steeda CAI and 93 Steeda Tune / Borla S-type Axle-Backs / Boss Strut Tower Brace / FRPP 3.55

Slickmullet is offline   Reply With Quote
Old 05-04-2016, 10:06 AM   #9
Registered Member
Regular
 
Join Date: Sep 2014
Location: Locust grove
Region: Georgia
Posts: 372
I'd get 3.55s if I were you especially with a manual.


2013 mustang v6 premium package
Powder coated gold metallic wheels
MPT ghost cam tune
Quarter window louvers
3.55 gears manual

2008 fz1
Chris44117 is offline   Reply With Quote
Old 05-04-2016, 10:08 AM   #10
Registered Member
Regular
 
Ferr's Avatar
 
Join Date: Jan 2015
Location: Holmdel
Region: New Jersey
Posts: 59
Quote:
Originally Posted by Slickmullet View Post
What kind of mileage are we seeing with 3.73s?


Sent from my iPhone using Mustang Evolution

A lot of people seem to get 24-26 mpg on the highway with 3.73s. Your highway mpg is what's gonna be affected the most when you change gears I believe. If i drive my car realistically on the highway I probably get around 28ish.


Sent from my iPhone using Mustang Evolution
Ferr is offline   Reply With Quote
Old 05-04-2016, 10:16 AM   #11
Registered Member
Regular
 
Slickmullet's Avatar
 
Join Date: Apr 2016
Location: Alabama
Region: Alabama
Posts: 264
24-26 mpg sounds pretty good to me.


Sent from my iPhone using Mustang Evolution
__________________
2012 Race Red 3.7 Coupe: Steeda CAI and 93 Steeda Tune / Borla S-type Axle-Backs / Boss Strut Tower Brace / FRPP 3.55

Slickmullet is offline   Reply With Quote
Old 05-04-2016, 10:23 AM   #12
Registered Member
Regular
 
Join Date: Sep 2014
Location: Locust grove
Region: Georgia
Posts: 372
Quote:
Originally Posted by Slickmullet View Post
24-26 mpg sounds pretty good to me.


Sent from my iPhone using Mustang Evolution

If you granny it then you might 24, I have 3.55 and the closest I got was 22 @70.


2013 mustang v6 premium package
Powder coated gold metallic wheels
MPT ghost cam tune
Quarter window louvers
3.55 gears manual

2008 fz1
Chris44117 is offline   Reply With Quote
Old 05-04-2016, 10:33 AM   #13
Registered Member
Regular
 
Join Date: Sep 2014
Location: Locust grove
Region: Georgia
Posts: 372
If you granny it then you might 24, I have 3.55 and the closest I got was 22 @70.


2013 mustang v6 premium package
Powder coated gold metallic wheels
MPT ghost cam tune
Quarter window louvers
3.55 gears manual

2008 fz1
Chris44117 is offline   Reply With Quote
Old 05-04-2016, 12:38 PM   #14
Registered Member
Regular
 
Join Date: Jul 2014
Location: Catonsville
Region: Maryland
Posts: 690
I went to 3.55 from 2.73 in my manual, it really woke the car up. No hit to mpg around town, highway is down maybe .5-1mpg but still can pull a solid 27+ at 70-72.

There's only a 100 rpm difference between 3.55 vs 3.73. For me, I went 3.55 because with 255/45 or 235/50 18" tires it is possible to hit 60 without needing to shift to 3rd. If you're running 27.75-28" tire you should still be able to hit 60mph without a shift to 3rd with 3.73. Just driver preference.
__________________
2013 SGM 3.7 | MPT Tune | JBA Titanium Ceramic Shorty Headers | MGW Gen 1 | Blowfish Street Bracket | BBK TB | 18" Charcoal AMR | FRPP 3.55 | BMR LCA | Steeda Panhard Bar | Dynotech 3.5" Driveshaft |
mariusvt is offline   Reply With Quote
Old 05-04-2016, 02:31 PM   #15
Registered Member
Regular
 
Slickmullet's Avatar
 
Join Date: Apr 2016
Location: Alabama
Region: Alabama
Posts: 264
Quote:
Originally Posted by mariusvt View Post
I went to 3.55 from 2.73 in my manual, it really woke the car up. No hit to mpg around town, highway is down maybe .5-1mpg but still can pull a solid 27+ at 70-72.

There's only a 100 rpm difference between 3.55 vs 3.73. For me, I went 3.55 because with 255/45 or 235/50 18" tires it is possible to hit 60 without needing to shift to 3rd. If you're running 27.75-28" tire you should still be able to hit 60mph without a shift to 3rd. Just driver preference.

Sounds like a nice set up.


Sent from my iPhone using Mustang Evolution
__________________
2012 Race Red 3.7 Coupe: Steeda CAI and 93 Steeda Tune / Borla S-type Axle-Backs / Boss Strut Tower Brace / FRPP 3.55

Slickmullet is offline   Reply With Quote
Old 05-04-2016, 04:14 PM   #16
Registered Member
Regular
 
2011 Kona Blue's Avatar
 
Join Date: Nov 2011
Region: Maryland
Posts: 7,653
I installed 3:73 gears years ago and huge difference over my old 2:73 gears. Different car altogether from off the line. Now other members on here may tell you a gear install is a waste because you have a V6 and their not race cars. Heck, some on here will say the 3.7 isn't even fast so let me get the quote right just the other day.

You can frebreeze a turd but it's still a turd, so pointless! This was coming from a member on here who is a real ****** bag but none the less!

Just a near stock 3.7
2011 Kona Blue is offline   Reply With Quote
Old 05-04-2016, 04:32 PM   #17
Registered Member
Regular
 
Slickmullet's Avatar
 
Join Date: Apr 2016
Location: Alabama
Region: Alabama
Posts: 264
Quote:
Originally Posted by 2011 Kona Blue View Post
I installed 3:73 gears years ago and huge difference over my old 2:73 gears. Different car altogether from off the line. Now other members on here may tell you a gear install is a waste because you have a V6 and their not race cars. Heck, some on here will say the 3.7 isn't even fast so let me get the quote right just the other day.

You can frebreeze a turd but it's still a turd, so pointless! This was coming from a member on here who is a real ****** bag but none the less!

Just a near stock 3.7

The car stock is plenty fast enough for me. I mean seriously how fast do you need to go on the street? I just like working on cars and doing upgrades for fun. I'm very pleased with the power of the V6. It feels every bit as fast as the G37s I had, almost as fast as the 08 Charger RT, and somewhat slower than the 06 GTO I had. Still a fun car thanks to the manual.


Sent from my iPhone using Mustang Evolution
__________________
2012 Race Red 3.7 Coupe: Steeda CAI and 93 Steeda Tune / Borla S-type Axle-Backs / Boss Strut Tower Brace / FRPP 3.55

Slickmullet is offline   Reply With Quote
Old 05-04-2016, 04:34 PM   #18
Registered Member
Regular
 
2011 Kona Blue's Avatar
 
Join Date: Nov 2011
Region: Maryland
Posts: 7,653
Quote:
Originally Posted by Slickmullet View Post
The car stock is plenty fast enough for me. I mean seriously how fast do you need to go on the street? I just like working on cars and doing upgrades for fun. I'm very pleased with the power of the V6. It feels every bit as fast as the G37s I had, almost as fast as the 08 Charger RT, and somewhat slower than the 06 GTO I had. Still a fun car thanks to the manual.


Sent from my iPhone using Mustang Evolution
Fast enough to satisfy my need for speed.

Just a near stock 3.7
2011 Kona Blue is offline   Reply With Quote
Old 05-04-2016, 04:40 PM   #19
Registered Member
Regular
 
king_13's Avatar
 
Join Date: Mar 2015
Location: Clarksville
Region: Tennessee
Posts: 737
I'd say 3.55s for a daily, I have 3.73 and it's just a bit short for my taste. Eventually it's going to be a weekend car so I'm not too upset.


Sent from my iPhone using Tapatalk
__________________
2014 Oxford White 5.0 Premium

2015 Maroon Chevy Cruze LTZ
2011 Performance White V6 Premium SOLD
king_13 is offline   Reply With Quote
Old 05-04-2016, 06:11 PM   #20
Registered Member
Regular
 
Slickmullet's Avatar
 
Join Date: Apr 2016
Location: Alabama
Region: Alabama
Posts: 264
Mine is more of a weekend car but I do take the occasional long trip.


Sent from my iPhone using Mustang Evolution
__________________
2012 Race Red 3.7 Coupe: Steeda CAI and 93 Steeda Tune / Borla S-type Axle-Backs / Boss Strut Tower Brace / FRPP 3.55

Slickmullet is offline   Reply With Quote
Old 05-04-2016, 06:22 PM   #21
Registered Member
Regular
 
king_13's Avatar
 
Join Date: Mar 2015
Location: Clarksville
Region: Tennessee
Posts: 737
Get 3.73s then! When I'm driving for pleasure and not for work, I've never said "I wish I could shift less often".


Sent from my iPhone using Tapatalk
__________________
2014 Oxford White 5.0 Premium

2015 Maroon Chevy Cruze LTZ
2011 Performance White V6 Premium SOLD
king_13 is offline   Reply With Quote
Old 05-05-2016, 05:10 AM   #22
Evolution's Finest

Supporter
 
Hampton CIT's Avatar
 
Join Date: Apr 2015
Location: Williamsburg
Region: Virginia
Posts: 527
Same opinion as everyone else here. Gears were my next mod but got delayed. After a ton of reading and reflection; I decided on 3.55s. Mainly as my car is a daily driver with about 80 miles a day most of the interstate. If I wasn't on the road as much, I would have done 3.73s. Take what folks say with a grain of salt because your driving habits really determine what you'll like.
__________________
2016 Premium Eco w/ PP - Roush Quarter Window Scoops, Side Scoops, Rear Spoiler; Modded GT Mesh Grilles; FP Strut Tower Brace; Eibach Pro-Kit Springs; Steeda IRS Bushings; BMR Billet Delrin/Spherical Vertical Links; Mishimoto Oil Separator; MAPerformance CAI; Mishimoto Intercooler/Aluminum Charge Pipes; Turbosmart Kompact Dual Port BOV; Turbosmart IWG75 Wastegate (10 PSI); Mishimoto Coolant Tank; JLT Engine Cover; Mishimoto Downpipe with modded MBRP XP Catbacks for TRUE 3" exhaust from turbo to tips; Drilled/Slotted Brake Rotors
Hampton CIT is offline   Reply With Quote
Old 05-05-2016, 07:21 AM   #23
Registered Member
Regular
 
2011 Kona Blue's Avatar
 
Join Date: Nov 2011
Region: Maryland
Posts: 7,653
Quote:
Originally Posted by Hampton CIT View Post
Same opinion as everyone else here. Gears were my next mod but got delayed. After a ton of reading and reflection; I decided on 3.55s. Mainly as my car is a daily driver with about 80 miles a day most of the interstate. If I wasn't on the road as much, I would have done 3.73s. Take what folks say with a grain of salt because your driving habits really determine what you'll like.
Rock out man. I chose 3.73 gears and I drive my car mainly on highways. I go around 8000 miles year with my pony and love my 3:73 gears.

Nothing wrong with 3:55 gears but very happy with not going that route.

Just a near stock 3.7
2011 Kona Blue is offline   Reply With Quote
Old 05-05-2016, 08:25 AM   #24
Registered Member
Regular
 
c_rizzle's Avatar
 
Join Date: Sep 2014
Location: New Orleans
Region: Louisiana
Posts: 1,008
Manual - 3.31 stock for grannies who want MPG not performance
3.55 for more performance & still a good daily driver,
3.73 for fun/play/weekend car,
4.10+ and higher will make you feel even "faster", BUT won't be good for high speeds. (can = slower in quarter mile b/c of extra shift, and high RPMs on highway)

Auto - save a little extra money & go for the torque converter instead of gears
c_rizzle is offline   Reply With Quote
Old 05-05-2016, 04:43 PM   #25
Registered User
Newbie
 
Join Date: Mar 2016
Location: Phoenix
Region: Arizona
Posts: 3
I went from 2:73 to 3:55, boy what a difference!. Got a BAMA tune for my automatic, and now my v6 really howls! Just finished the Route 66 Fun Run and got 27 on freeway @75mph. And yes, I can chirp the tires going from 1-2 gear. Wouldn't have it any other way.
RubyRed-S550-EB is offline   Reply With Quote
Old 05-05-2016, 09:11 PM   #26
Road Trip!
Regular
 
Join Date: Dec 2015
Location: Virginia beach
Region: Virginia
Posts: 275
Quote:
Originally Posted by 2011 Kona Blue View Post
Rock out man. I chose 3.73 gears and I drive my car mainly on highways. I go around 8000 miles year with my pony and love my 3:73 gears.

Nothing wrong with 3:55 gears but very happy with not going that route.

Just a near stock 3.7

Why did you switch gears?


Sent from my iPhone using Mustang Evolution
Mcturd81 is offline   Reply With Quote
Old 05-05-2016, 09:21 PM   #27
Registered Member
Regular
 
2011 Kona Blue's Avatar
 
Join Date: Nov 2011
Region: Maryland
Posts: 7,653
Quote:
Originally Posted by Mcturd81 View Post
Why did you switch gears?


Sent from my iPhone using Mustang Evolution
Was looking for a bit more quick from dead stops. 3:73 gearing is a easy and inexpensive way to cheat the lack of torque in the 3.7. Really makes up for the lack of torque.

Wanted a bit more down low power and 3:73 accomplished that. Its a torque multiplier as I'm sure you know this.

Just a near stock 3.7
2011 Kona Blue is offline   Reply With Quote
Old 05-05-2016, 09:35 PM   #28
Road Trip!
Regular
 
Join Date: Dec 2015
Location: Virginia beach
Region: Virginia
Posts: 275
Quote:
Originally Posted by 2011 Kona Blue View Post
Was looking for a bit more quick from dead stops. 3:73 gearing is a easy and inexpensive way to cheat the lack of torque in the 3.7. Really makes up for the lack of torque.

Wanted a bit more down low power and 3:73 accomplished that. Its a torque multiplier as I'm sure you know this.

Just a near stock 3.7

No I know. I wanted to know why you did it. Why didn't you go 4.10 then?


Sent from my iPhone using Mustang Evolution
Mcturd81 is offline   Reply With Quote
Old 05-06-2016, 07:46 AM   #29
Registered Member
Regular
 
2011 Kona Blue's Avatar
 
Join Date: Nov 2011
Region: Maryland
Posts: 7,653
Quote:
Originally Posted by Mcturd81 View Post
No I know. I wanted to know why you did it. Why didn't you go 4.10 then?


Sent from my iPhone using Mustang Evolution
I debated back and forth between 4:10 or 3:73 gears. I was concerned 4;10's would be a bit much for a semi daily driver. If I were a track car 4:10's would be better but as you know I'm not. 3:73 gears give the perfect blend for me.

Perhaps I would of been as happy with 4:10 gears too, I don't really know since I don't have them. I can say , I don't have any buyers remorse about getting my 3:73 gears.

Just a near stock 3.7
2011 Kona Blue is offline   Reply With Quote
Old 05-06-2016, 03:38 PM   #30
Registered Member
Regular
 
Slickmullet's Avatar
 
Join Date: Apr 2016
Location: Alabama
Region: Alabama
Posts: 264
Going with the 3.73s.


Sent from my iPhone using Mustang Evolution
__________________
2012 Race Red 3.7 Coupe: Steeda CAI and 93 Steeda Tune / Borla S-type Axle-Backs / Boss Strut Tower Brace / FRPP 3.55

Slickmullet is offline   Reply With Quote
Old 05-06-2016, 03:44 PM   #31
Registered Member
Regular
 
2011 Kona Blue's Avatar
 
Join Date: Nov 2011
Region: Maryland
Posts: 7,653
Quote:
Originally Posted by Slickmullet View Post
Going with the 3.73s.


Sent from my iPhone using Mustang Evolution
Great choice!

Just a near stock 3.7
2011 Kona Blue is offline   Reply With Quote
Old 05-06-2016, 04:36 PM   #32
Registered Member
Regular
 
TRMN8ER's Avatar
 
Join Date: Apr 2016
Location: San Diego
Region: California
Posts: 176
With a V6, 3.73s is as short as I would go. You'd need to be making more power to fully utilize 4.10s. GTs on the other hand, 4.10s all day, unless you have a specific purpose for the car.

But regardless of how often you drive, it really comes down to your driving style. When you drive, do you hammer the gas pedal and dump your clutch? Or do you baby the thing around at all times? The more aggressive your driving style, the shorter your gears should be. The less aggressive your driving style, the taller your gears should be. This is a generalization, as gears simply compliment what you are trying to do with the car. You are probably in the middle of the spectrum, like most Mustang owners, so 3.73s will allow you to enjoy the cars potential, when you want to.

On a side note, the shorter your gears, the more your rear end will want to move around. You will likely experience more wheel hop and rear end instability with 3.73s (unless you have an upgraded suspension, of course).
TRMN8ER is offline   Reply With Quote
Old 05-06-2016, 06:20 PM   #33
Registered Member
Regular
 
Slickmullet's Avatar
 
Join Date: Apr 2016
Location: Alabama
Region: Alabama
Posts: 264
I just know the 2.73s are garbage. 2nd and 3rd gear have very little pull. I have considered the 3.55s as well. Kind of a tough decision.


Sent from my iPhone using Mustang Evolution
__________________
2012 Race Red 3.7 Coupe: Steeda CAI and 93 Steeda Tune / Borla S-type Axle-Backs / Boss Strut Tower Brace / FRPP 3.55

Slickmullet is offline   Reply With Quote
Old 05-07-2016, 10:39 AM   #34
Registered Member
Regular
 
FastFord13's Avatar
 
Join Date: Apr 2013
Location: Montreal
Region: Canada
Posts: 4,263
You really can't go wrong with either gear, the difference is really small.

Sent from the future.
FastFord13 is offline   Reply With Quote
Old 05-07-2016, 01:28 PM   #35
Registered Member
Regular
 
Slickmullet's Avatar
 
Join Date: Apr 2016
Location: Alabama
Region: Alabama
Posts: 264
Well apparently I need to do the driveshaft first or risk a driveshaft exploding...


Sent from my iPhone using Mustang Evolution
__________________
2012 Race Red 3.7 Coupe: Steeda CAI and 93 Steeda Tune / Borla S-type Axle-Backs / Boss Strut Tower Brace / FRPP 3.55

Slickmullet is offline   Reply With Quote
Reply

Lower Navigation
Go Back   Mustang Evolution > 4 Cylinder | V6 | Classic Mustangs || Tech and Talk > 2011-2014 V6 Mustang

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Are 3.73 gears a big upgrade from 3.55s? Pavstang 2005-2010 Mustang GT 75 02-06-2013 10:26 AM
3.55s vs 3.73s alrefire 2011-2014 V6 Mustang 15 02-03-2013 07:33 AM
Rear Gears: 3.55s or 3.73s? TheJigShow 1996-2004 Mustang GT 5 09-28-2011 01:23 PM
FS: Lightly used 3.55s or 4.10s SaleenFiend Mustang Parts for Sale and Wanted 14 04-16-2010 10:39 AM
Fox 8.8 w/ Motorsport 3.55s Jayber Mustang Parts for Sale and Wanted 1 06-16-2004 06:06 PM

» Like Us On Facebook



04:59 PM


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0

MustangEvolution.com is in no way associated with or endorsed by Ford Motor Company.