Blk003GT

^ LOL. Gave me a good laugh hoss

stang315hp

you guys are right it's an o/r x-pipe sorry for sounding stupid.

halo954

I have 2009 4.0 v6 5 speed with a ford racing CAI
ford racing suspension ford racing true dual exhaust & Chip Foose rims 20 x 10 in the back & 20 x 8.5 in the front. Am about to do rings pinion upgrade it includes all new differential my choice of gears from ford racing do i go with 373 or 410 daily driver city 20 miles a day
Thanks for any information

boduke0220

4.10's all the way!

H0SS302

4.10s are the only way to play. I wish I went 4.30 from the start.

oxfordgt

+1 I never regretted putting in 4.10s and they really worked awsome with 700rwhp. By the way I got better gas mileage then my wifes bolt on stock gear mustang gt.

mustangmancp

Lol idk if they really did...i think i was a typo becuase they deal mostly w/ f-body stuff so i believe it was just a typo.

stang315hp

What about the install make's it bad enough too whine?

1HottMach

man they can be harsh sometimes here.. A bad install (improper pinion depth and/or wrong backlash) These are all connected to the proper shimming... Make sure that you don't just let billy from 2 doors down do your gears... For the record I agree with all of them Go for the 4:10's You won't be sorry! The difference from 3:90 to 4:10 YOU will never notice the difference bro I promise! My Mach is also a daily driver
Good Luck

tdcalhoun89

my mustang was a dd for about 2 years with 4.10s... wouldn't have had it any other way

4.10s ftw