Changing Gears in an 07 A6
Thread Starter
Instructor
Joined: Jan 2012
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From: Maryland
Changing Gears in an 07 A6
I talked to a shop today that suggested changing my stock 2.56 gears to something more. What would be a good ratio to go to (100% saturday driving, little bit of drag racing)?
What is an average price for that swap? Thanks
What is an average price for that swap? Thanks
Last edited by Nova10sec; Feb 7, 2012 at 08:00 PM.
Race Director
Joined: Mar 2005
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From: Southampton NJ
save your money no need to change, stock 256 gear in an a6 is like 373 in the a4, if you change to 342 you will lose time in the 1/4 with more shifts, look at the c6 performance list and you will see that LS1LT1 IS IN THE 10S AND IN THE # 2 LS2 A6 BOLT/ON SPOT WITH STOCK 256 GEARS.... AND TONYB4 IS IN THE NUMBER 1 CAM ONLY LS2 A6 WITH STOCK 256 GEARS, the proof is in the list, listen to people who know
Team Owner
Joined: Feb 2001
Posts: 27,254
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From: Short Hills, NJ
Probably going to be even more than that with parts and labor, at most shops that are skilled enough at doing the job correctly at least.
Might even be more like the equivalent of 4.30s (or even higher?) in an M6.
If choosing only one, I too would pick the higher stall converter over shorter (numerically higher) gears in an A6 car.
If choosing only one, I too would pick the higher stall converter over shorter (numerically higher) gears in an A6 car.
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Burning Brakes
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From: stuart fl
not true, with just gears i gained about .1 to .15 in the 1/4, but its not really worth the cost to do the mod. the gears feel so good on the street but i guess the extra shift almost evens it out in the 1/4.
Race Director
Joined: Mar 2007
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From: Missouri City Texas
save your money no need to change, stock 256 gear in an a6 is like 373 in the a4, if you change to 342 you will lose time in the 1/4 with more shifts, look at the c6 performance list and you will see that LS1LT1 IS IN THE 10S AND IN THE # 2 LS2 A6 BOLT/ON SPOT WITH STOCK 256 GEARS.... AND TONYB4 IS IN THE NUMBER 1 CAM ONLY LS2 A6 WITH STOCK 256 GEARS, the proof is in the list, listen to people who know
You just don't gain much in the 1/4 mile due to the extra shifts. It WILL make the car a hell of a lot more fun to drive on the street though because each gear will pull much harder and faster than before.
Race Director
Joined: Mar 2005
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From: Southampton NJ
let me clarify for the nitpickers and the naysayers, an extra shift losses time.and is very hard on the a6 trans. when anyone can beat LS1LTI and TONYB4 with gears, i might change my point of view
Race Director
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From: Missouri City Texas
I'm not sure the point you're trying to make, but not beating a record has absolutely no bearing on whether or not a mod reduces ET.
Drifting
Joined: Aug 2010
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From: Montgomery Texas
Well I have changed gears and I ran quicker not slower. My advise instead of changing gears I would look for a Z06 read diff! They come with the 3.42 gear and it is much stronger than the stock C6 rear diff.
Race Director
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From: Southampton NJ
Safety Car
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From: va
do you happen to know what modifications need to be made to get the z06 diff to fit along with the factory cooler on an a6?
Race Director
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From: Missouri City Texas
You said
if you change to 342 you will lose time in the 1/4
You also said
an extra shift losses time
Last edited by FloydSummerOf68; Feb 8, 2012 at 01:15 PM.
Race Director
Joined: Mar 2005
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From: Southampton NJ
That is pretty simple. I understand that and assume others understand that as well. Your fact means nothing though when talking about if a mod will pick up power. Just because they ran the record doesn't mean that only their combination of mods make power or that their specific mods are the only one's viable.
You said
and that is a ridiculously un-true and over-exaggerated statement. Please show who has gone slower in the 1/4 after a gear swap. I personally have never seen it. Everyone I know has picked up .1-.2 from gears, which is misleading for the performance benefit they're actually giving. Racing isn't all 1/4 mile and their benefit is better shown elsewhere.
You also said
which is also a very mis-leading statement. Just because you have an extra shift doesn't mean your car is going to take longer to get from A-B.
You said
and that is a ridiculously un-true and over-exaggerated statement. Please show who has gone slower in the 1/4 after a gear swap. I personally have never seen it. Everyone I know has picked up .1-.2 from gears, which is misleading for the performance benefit they're actually giving. Racing isn't all 1/4 mile and their benefit is better shown elsewhere.
You also said
which is also a very mis-leading statement. Just because you have an extra shift doesn't mean your car is going to take longer to get from A-B.
Drifting
Joined: Aug 2010
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From: Montgomery Texas
No modifications required it is a direct bolt in. You will need to figure out what you want to do about the rear diff cooler that is on the Z06 rear end! You can either loop it into a closed system or install an aftermarket cooler.
Team Owner
Joined: Feb 2001
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From: Short Hills, NJ
Drifting
Joined: Aug 2010
Posts: 1,880
Likes: 4
From: Montgomery Texas
