• Mustang Forums
  • 2005 - 2014 S-197 Mustang -General/Talk-

gear ratios

  • Thread starter Thread starter herm25
  • Start date Start date Oct 30, 2009
H

herm25

New Member
Aug 4, 2009
14
0
0
russellville, AR
Oct 30, 2009
#1
  • Oct 30, 2009
  • #1
--------------------------------------------------------------------------------

ok, so i assumed my stang had 4:10 gears in it..... I know I know what happens when one AssUmes, anyway I looked at the sticker that comes on the window when u buy it, and it says that the axel ratio is 3:31 so is that the same thing as the gear ratio?
 

bigcat

start with the upper hole, and if more traction is
May 1, 2005
3,015
1
79
7200 feet
Oct 30, 2009
#2
  • Oct 30, 2009
  • #2
yes, you have 3.31s in the rear...
 
H

herm25

New Member
Aug 4, 2009
14
0
0
russellville, AR
Oct 30, 2009
#3
  • Oct 30, 2009
  • #3
thanks that is what i thought just had to double check though
 

Casey4s

New Member
Sep 1, 2007
147
0
0
Woodbridge, VA
Oct 30, 2009
#4
  • Oct 30, 2009
  • #4
Why did you assume it was 4.10s? The 3.31s are standard in automatics and I think 3.53 in manuals.
 

whyask

New Member
Apr 4, 2005
735
1
0
Sacramento
Oct 31, 2009
#5
  • Oct 31, 2009
  • #5
dear god you assumed they had 410's LOL GO GET you some 4:10's and youll POOP yourself !
 
0

08gt08

New Member
Oct 21, 2009
4
0
2
South Jersey
Oct 31, 2009
#6
  • Oct 31, 2009
  • #6
i have a 08 gt 5-speed and it came with 3.31 in it
 
H

herm25

New Member
Aug 4, 2009
14
0
0
russellville, AR
Oct 31, 2009
#7
  • Oct 31, 2009
  • #7
i have an 09 5-speed, i never have figured out how gear ratios work i thought the lower the the number the better, cause that number tells you how many times the drive shaft spins before the tires do, so i figured lower was better, for some reason i thought 4.10 was standard and everyone was swapping to 3.73 and 3.53 lol.... i obvisouly misunderstood what i read.
 
E

echoinsilence

New Member
Jul 22, 2009
87
0
0
denham springs, LA
Nov 1, 2009
#8
  • Nov 1, 2009
  • #8
its 3.55 actually and it all depends on what you're doing with your car, if you have a turbo setup then a higher gear ratio like a 3.55 or 3.73 will actually be more beneficial and help you build boost faster because it puts more load on the motor. but for N/A setups you want a lower gear like a 4.10 or 4.30 and if you really want to get serious even a 4.56
 
B

BLKNED

Member
Jan 27, 2008
67
1
9
Nov 2, 2009
#9
  • Nov 2, 2009
  • #9
echoinsilence said:
its 3.55 actually and it all depends on what you're doing with your car, if you have a turbo setup then a higher gear ratio like a 3.55 or 3.73 will actually be more beneficial and help you build boost faster because it puts more load on the motor. but for N/A setups you want a lower gear like a 4.10 or 4.30 and if you really want to get serious even a 4.56
Click to expand...

He has 3.31's, those are standard in all GT's since at least '08. And that's what his sticker says.
 
E

echoinsilence

New Member
Jul 22, 2009
87
0
0
denham springs, LA
Nov 2, 2009
#10
  • Nov 2, 2009
  • #10
I know he has 3.31's I was just sayin that the other gear is a 3.55 not a 3.53 and I'm pretty sure it depends whether it's an auto or stick as to which gear you get. I could be wrong though
 

Ken04

New Member
May 24, 2007
235
0
0
Vancouver Washington
Nov 2, 2009
#11
  • Nov 2, 2009
  • #11
08gt08 said:
i have a 08 gt 5-speed and it came with 3.31 in it
Click to expand...

me too, 05 GT manual.
 

ct07gt

Member
Feb 14, 2008
377
0
16
Nov 2, 2009
#12
  • Nov 2, 2009
  • #12
3.31 is standard for auto and manual, 3.55 was optional on the manual. I think it was a $155 option on my car, which is an 07. The GT500 has a 3.31, I think the Shelby GT and the Bullit might have had 3.73. Not sure on the last two.
 
B

BLKNED

Member
Jan 27, 2008
67
1
9
Nov 2, 2009
#13
  • Nov 2, 2009
  • #13
echoinsilence said:
I know he has 3.31's I was just sayin that the other gear is a 3.55 not a 3.53 and I'm pretty sure it depends whether it's an auto or stick as to which gear you get. I could be wrong though
Click to expand...

Ahh, got ya. The 3.55's were a $300 option when I ordered mine witch was late in the '08 model year.
 

j_lutter31

Member
Apr 7, 2008
79
2
19
Central South Dakota
Nov 2, 2009
#14
  • Nov 2, 2009
  • #14
herm25 said:
i have an 09 5-speed, i never have figured out how gear ratios work i thought the lower the the number the better, cause that number tells you how many times the drive shaft spins before the tires do, so i figured lower was better, for some reason i thought 4.10 was standard and everyone was swapping to 3.73 and 3.53 lol.... i obviously misunderstood what i read.
Click to expand...

Ok, pretend your car has a 1:1 gear, it could go really fast but it would take a while to get there. As you increase your gear ratio, your tires spin slower with respect driveshaft, this increases acceleration, but decreases your top speed, (hence it increases your speed at any given rpm, that's why some people complain about gas mileage with 4.10's)
 
You must log in or register to reply here.

Similar threads

P
Air Fuel ratio bung location.
  • Praetorious
  • Feb 7, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
39
Views
994
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Feb 11, 2026
Noobz347
Drivetrain How much resistance, if any at all, is normal on a new 1st gear and synchro on a WC T5 transmission?
  • sleep-e
  • Jan 21, 2026
  • Fox 5.0 Mustang Tech
Replies
2
Views
263
Fox 5.0 Mustang Tech Jan 22, 2026
sleep-e
T
Newbie looking for some info on speedo gears
  • TDM389
  • Nov 15, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
3
Views
247
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Nov 16, 2025
TDM389
T
O
My rebirth, Hi from PA
  • onemore1987
  • Jun 28, 2026
  • The Welcome Wagon
Replies
3
Views
127
The Welcome Wagon Jun 29, 2026
onemore1987
O
S
FUEL PUMP ALWAYS ON
  • Scwhitten
  • Jun 6, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • 2
Replies
27
Views
499
1996 - 2004 SN95 Mustang -General/Talk- Jul 4, 2026
manicmechanic007
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 2005 - 2014 S-197 Mustang -General/Talk-
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?