rear end 3.73...4.10
01-26-2014, 01:18 PM
#13
1st Gear Member
Join Date: Dec 2013
Location: New Jersey
Posts: 128
I am very new and My earlier reply was just a thought from my opinion being use to driving 6 speed auto's. what would be a good distance highway cruising speed/rpm? at 65 in 5th i'm at 2200 and seems a little high. could just be the Borla cat back noise. would you make a 100 mile trip on the highway above 2200? thanks.
01-26-2014, 05:49 PM
#15
3rd Gear Member
Join Date: Oct 2009
Location: Utah
Posts: 730
Just get 4.10s and be done with it. Those that gripe about traction or MPG issues that come with gears are either one of two things:
1. don't know how to drive the car
2. don't know how to drive the car
edit- forgot one more: 3. should be driving a civic hybrid or Prius instead of a Mustang
1. don't know how to drive the car
2. don't know how to drive the car
edit- forgot one more: 3. should be driving a civic hybrid or Prius instead of a Mustang
Last edited by Ricardo; 01-26-2014 at 05:52 PM.
02-03-2014, 06:37 AM
#18
Join Date: May 2013
Location: IN
Posts: 23
iv got 4.10s and commute 97 miles a day for work. 5pd. 70mph the whole way and get 23.7-25.2 ave. about 70% highway and 30% city. around town shifting at 3500ish and a few big romps and i still hang around 19ish.. if it a put skinny pedal all the time welllll then.. ya.
short version. 4.10s and dont look back.
short version. 4.10s and dont look back.
02-04-2014, 11:49 AM
#20
I've run countless hours of testing using Cartest2000 (vehicle simulator). One thing I've found is that the 05-10 Mustang GT's work best with 4.10 rear gears (best acceleration and time to speed). I've had an 06 with 3.55's and another 06 with 4.10's, both were fine but the second one with 4.10's was a rocket. Also it didn't get that much worse fuel economy. It had Flowmaster super 40's and didn't drone either.
For 11-14 Mustang GT's the ideal rear gear is 3.73 from simulation testing. With the 6 speed the gearing is a little shorter so it is similar to the 05-10's 4.10 rear gears.
I'd say don't worry about gas, throw in the 4.10's and have some fun. If you ever get an 11-14, 3.73's instead. 15+, no idea, haven't simulated one yet.
For 11-14 Mustang GT's the ideal rear gear is 3.73 from simulation testing. With the 6 speed the gearing is a little shorter so it is similar to the 05-10's 4.10 rear gears.
I'd say don't worry about gas, throw in the 4.10's and have some fun. If you ever get an 11-14, 3.73's instead. 15+, no idea, haven't simulated one yet.