3.31 gears suck?
04-19-2008, 12:47 PM
#1
Thread Starter
Join Date: Apr 2008
Location:
Posts: 45
3.31 gears suck?
i have a 07 gt m/t with the stock 3.31 gears. i didnt do my reasearch until after i purchased the car that in 07 they changed the stock gears. how much of a difference would i experience in the quarter mile. anyone run a stock gt with 3.31s? ill save my money for 3.73 or 4.10s but its gonna take time.
04-19-2008, 01:33 PM
#6
5th Gear Member
Join Date: Sep 2006
Posts: 3,401
RE: 3.31 gears suck?
3.31's are fine for highway driving, gas mileage and noise levels.
Anything lower and you're compromising all the above in exchange for a snappier 0-Vmax.
Depends on what you want from your ride. if you're a regular weekend warrior at the local strip then go for some gears, they aren't that expensive.
If you don't run the drag strip much/at all, then leave well alone.
Anything lower and you're compromising all the above in exchange for a snappier 0-Vmax.
Depends on what you want from your ride. if you're a regular weekend warrior at the local strip then go for some gears, they aren't that expensive.
If you don't run the drag strip much/at all, then leave well alone.
04-19-2008, 02:19 PM
#8
4th Gear Member
Join Date: Dec 2005
Location: Ohioland, Ohio
Posts: 1,324
RE: 3.31 gears suck?
I switched em out with 3.73's a few years ago. It made quite a bit of difference. The downside is highway mpg. Cruising at 70mph, Im turning 2450 rpms and get 23 mpg down hill.
04-19-2008, 02:58 PM
#9
5th Gear Member
Join Date: Jun 2007
Location: Decatur AL USA
Posts: 2,176
RE: 3.31 gears suck?
I worked with a guy who had never driven Mustangs before with a Showroom Stock 2008 GT with the M5/3.31 combo.
After a little coaching and critique between some runs he cut a 1.95 13.55 @ 103at about 700' Density Altitude.
I would say they are about 1/10 second off the pace. They are trickier to launch. The line between bog and spin is razor thin.
PS Dont let Red scare you when it comes to changing gears. 3.73's with a Manual (0.675 OD) turn about the same rpm as 3.55 with an Auto (0.71 OD). Many here get pretty good mileage with 4.10's in Manuals.
After a little coaching and critique between some runs he cut a 1.95 13.55 @ 103at about 700' Density Altitude.
I would say they are about 1/10 second off the pace. They are trickier to launch. The line between bog and spin is razor thin.
PS Dont let Red scare you when it comes to changing gears. 3.73's with a Manual (0.675 OD) turn about the same rpm as 3.55 with an Auto (0.71 OD). Many here get pretty good mileage with 4.10's in Manuals.
