but it is z51 package because it has drilled brakes on it
stock diff ratio
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stock diff ratio
Guys i have searched but could't find the stock ratio of c6 ls2 wit A4 transmission ? And also do you have any suggestions for drivetrain modification for my transmission and differantial ?
i never drag my car my mods are corsa all the way lg long tube and cams are coming soon ?
i never drag my car my mods are corsa all the way lg long tube and cams are coming soon ?
Team Owner
Joined: Feb 2001
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From: Short Hills, NJ
The trans is strong and does usually hold up well.
I would just follow the standard maintenance/fluid change schedules and such and before careful to avoid wheel hop and head accelerations over rough surfaces.
Team Owner
Joined: Feb 2001
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From: Short Hills, NJ
It's difficult to say for sure as there are so many potential contributing factors (elevation, temperature, wind speed, condition of vehicle etc.) but generally speaking, probably somewhere in the 175-180mph range bone stock (or stock with a Corsa cat back).
Are you sure that you have the 2.73 rear gears though?
Are you sure that you have the 2.73 rear gears though?
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It's difficult to say for sure as there are so many potential contributing factors (elevation, temperature, wind speed, condition of vehicle etc.) but generally speaking, probably somewhere in the 175-180mph range bone stock (or stock with a Corsa cat back).
Are you sure that you have the 2.73 rear gears though?
Are you sure that you have the 2.73 rear gears though?
how can i be sure about my ratio ?
Team Owner
Joined: Feb 2001
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From: Short Hills, NJ
Again if your car came with the Z51 package (does it have the larger crossed drilled rotors?) then it definitely has the 3.15s but I'm assuming that it's not a Z51 car.
Other than that you can tell by looking at the build code sheet/sticker usually stuck inside the glove box or center box (look for the code GU2 (2.73s) or G90 (3.15s)), by driving on the highway and noting the RPMs (very low at say 60mph) or by crawling under the back of the car and looking at the tags on the rear itself.
Other than that you can tell by looking at the build code sheet/sticker usually stuck inside the glove box or center box (look for the code GU2 (2.73s) or G90 (3.15s)), by driving on the highway and noting the RPMs (very low at say 60mph) or by crawling under the back of the car and looking at the tags on the rear itself.
Team Owner
Joined: May 2004
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From: McKinney TX
St. Jude Donor '21-'22-'23-'24
If you didn't buy it new, a previous owner could have put the drilled rotors on it. Look at the options sticker on the extreme left side of the inside of the glove box. Look for the codes that LS1LT1 told you about above. Those 3-character codes will be in alphabetical order. Z51 will also be on the sticker if it has the Z51 option package.
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Team Owner
Joined: Feb 2001
Posts: 27,236
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From: Short Hills, NJ
But if it is a 2005 with the Z51 package then it definitely left the factory with 3.15 gears (although even if it actually doesn't have Z51 then it still could have them as well).The codes/sticker is your best bet.
Tolero Apto Victum
Joined: Jul 2007
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From: Woodlands TX
Sir, this may help you out.
http://mysite.verizon.net/foofoo2/c6/index.html
http://xse.com/leres/ss/calculator.html
http://mysite.verizon.net/foofoo2/c6/index.html
http://xse.com/leres/ss/calculator.html
Last edited by Gering; Nov 7, 2011 at 05:53 AM.
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Team Owner
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From: Short Hills, NJ
Team Owner
Joined: Feb 2001
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From: Short Hills, NJ
As in limited slip differential?
No you don't need it as you already have one (even the 2.73 geared rear has that). But a fluid change (along with the necessary limited slip additive) probably wouldn't hurt though as a way of keeping it maintained/in good working order.
Again difficult to say but likely somewhere in that same 175-180+ range.
It depends on what your plans are for the car. For fast street duty or even light drag strip use that rear is fine, many have gone well into the low 11s and even the 10s in the 1/4 mile on that rear with an automatic so it's good. It's just that when one starts to add some REAL power along with sticky tires to it that it starts to complain a little.
No you don't need it as you already have one (even the 2.73 geared rear has that). But a fluid change (along with the necessary limited slip additive) probably wouldn't hurt though as a way of keeping it maintained/in good working order.
Again difficult to say but likely somewhere in that same 175-180+ range.
It depends on what your plans are for the car. For fast street duty or even light drag strip use that rear is fine, many have gone well into the low 11s and even the 10s in the 1/4 mile on that rear with an automatic so it's good. It's just that when one starts to add some REAL power along with sticky tires to it that it starts to complain a little.
Team Owner
Joined: Feb 2001
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From: Short Hills, NJ
Yes but the A6 is a totally different world from the A4, you have 2.73s but are still turning WAY less RPM than aksoyemircan's car at the same speeds even if his had the standard 2.73s.My A6 has only 2.56 gears and only turns like 1200rpm at 60mph!
Gotta love a high 10 second car that gets 31+mpg. 
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