Differential Swap ?

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08-01-2014, 06:19 AM

BlackFya

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Differential Swap ?

Fellas will the 3.42 rear end bolt into a a6 base coupe without any issues?

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08-01-2014, 07:18 AM

timd38

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As long as the tiff is from a base from 06 and up and your car is an 06 and up.

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08-01-2014, 08:48 AM

BlackFya

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Gears

Cool, I wasn't sure if there was a difference between the auto and manual differentials. I have an 08, A6 that currently has the 2.56 gear set.

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08-01-2014, 12:27 PM

timd38

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Your gas mileage will really suck when you do that. I went from 3:42 to 3:73 and the mileage impact was huge.

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08-01-2014, 02:15 PM

subfloor@centurytrans

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Quote:

Originally Posted by BlackFya

Cool, I wasn't sure if there was a difference between the auto and manual differentials. I have an 08, A6 that currently has the 2.56 gear set.

There is a difference - a differential out of a regular C6 with a manual transmission will not bolt up to an A6 transmission, however one from a C6 Z06 will.

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08-01-2014, 02:51 PM

JAvery20

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Isn't 3.42 a little steep for the a6?

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08-01-2014, 03:34 PM

whit1

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I was considering doing 3.73 gears in my 2013 grand sport manual trans.
Will my gas mileage suffer too ?

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08-01-2014, 05:34 PM

Guinzu

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^ freeway yes. In town...maybe not, usually end up in higher gear so better gas mileage.

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08-01-2014, 05:52 PM

timd38

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Quote:

Originally Posted by whit1

I was considering doing 3.73 gears in my 2013 grand sport manual trans.
Will my gas mileage suffer too ?

My highway mileage went down enough that I noticed, but the car has more pep!

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08-01-2014, 05:52 PM

#10

timd38

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Quote:

Originally Posted by subfloor@centurytrans

There is a difference - a differential out of a regular C6 with a manual transmission will not bolt up to an A6 transmission, however one from a C6 Z06 will.

Output shaft spline count?

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