Rear end questions????

**chrisLT1** · 12-03-2008, 06:32 PM

does anyone know a good rear end guy in or around dallas tx east of dallas would be great and what kind gears should i use i was told either 342s or 373s

**dpinson** · 12-04-2008, 05:14 AM

Originally Posted by chrisLT1

does anyone know a good rear end guy in or around dallas tx east of dallas would be great and what kind gears should i use i was told either 342s or 373s

dont know of a shop but i would at least do the 3.73

**GottaHaveLS1** · 12-04-2008, 07:14 AM

auto: 3.73
m6: 4.10

i've heard of some m6 cars with 3.73 or 3.90 but some owners say the difference isn't that noticeable. I love my 4.10s

**chrisLT1** · 12-04-2008, 11:07 AM

my car is A4 and its already got 323s so i dont know if 342s or 373s would be that big of a differance but i dont wanna do 410s cause i gotta drive it everyday and dont wanna lose my MPG

**oldmanZ28** · 12-08-2008, 09:21 AM

I went from 3.23 to 4.56.
On 7 trips to Florida from Cleveland,Ohio,my MPG was 24.5 consistently,with the 4.56s',3 trips to Florida have given me 21.5 MPG.The computor handled it well for the MPG.

**01WS6475hp** · 12-08-2008, 10:39 AM

4.56 now were talking gears. M6 = no problem. I have an auto with a 3400 stall and 3.73would not go no bigger for a auto unless it did not see the street much.

**oldmanZ28** · 12-08-2008, 01:57 PM

the 4.56s' ARE with an A4

**01WS6475hp** · 12-08-2008, 02:13 PM

Thats a lot of gear I bet in town milage suffers a little more.

**oldmanZ28** · 12-08-2008, 04:25 PM

that depends of the use of the right foot,but for normal driving,driving around town hasn't suffered.
Since the engine now has a mechanical advantage(compared to what it used to have with the 3.23s'),the computor fuel mapping can program itself leaner because of less engine 'load'.