Ratios??
Thread Starter
Burning Brakes
Joined: Nov 2007
Posts: 1,241
Likes: 0
From: Oceanside New York
Ratios??
I want to upgrade to a sick ratio..i'm talking 4.10...yes, that's sick and I can already see my MPG go straight into the sewer...but does that REALLY cost some $1,700?!!?
Someone lend an assist here....
Someone lend an assist here....
Last edited by CharlieB1979; Nov 20, 2007 at 10:45 AM.
Melting Slicks
Joined: Apr 2007
Posts: 2,916
Likes: 1
From: West Palm Beach Florida
Melting Slicks
Joined: Feb 2004
Posts: 2,819
Likes: 1
From: Toledo Ohio
CI 6-7-8-9 Veteran
St. Jude Donor '07
Research 1st
Theres more to it than just numbers. What year, engine mods and trans do you have now? A 4:10 in a 6sp makes 1st gear almost useless but in an A4 its doable. Then theres the clutch/TQconverter. If you have an A4 with a 2:73 then you need an entire new pig. $2K is the ball park figure. Good luck, you may want to do some more home work, before starting this project, unless you've done them before.
Burning Brakes
Joined: Jun 2007
Posts: 1,043
Likes: 3
From: Roselle IL
$1700.00 sounds about right if it's brand new.
I paid $800.00 for a used 3.42 with less than a 1000 miles on it.
4.10's are hard to come by used.
Be prepared to invest in some sticky tires.
Good luck with the project though.
I paid $800.00 for a used 3.42 with less than a 1000 miles on it.
4.10's are hard to come by used.
Be prepared to invest in some sticky tires.
Good luck with the project though.
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Drifting
Joined: Jun 2006
Posts: 1,360
Likes: 1
From: West Grove Pa
Had mine installed by ECS. Chris, Doug and his team. $1295 for the 4:10's. Had it done while I waited. I'm still getting between 25 and 26mpg and that's better than the wifes Honda CRV four banger. 75 mph 1895rpm. Wouln't recommend going that route with the A4 but the M6 seems right at home with the 4:10's-couldn't be happier.
Team Owner
Joined: Feb 2003
Posts: 37,329
Likes: 12
From: Plano Texas
CI 6-7-8-9 Veteran
CI-VI Car Show Winner
St. Jude Donor '07-'08-'09-'10-'11-'12-'13
Our '04 has 4:10's. Also has LPE H/C. Kooks, Borlas, under- pulley - MN6.
RWHP = 440
My '99 has an LPE 427, Kooks, MN12 (Z06 tranny) Borlas.
RWHP = 539
Driving the '04 is much more 'exciting' = pulls through 1/2/3/4 like a ****.
The S/O (who has the '04) pulls me from a hole shot (even with 305's I cannot keep the wheels stuck to the pavement
).
For those who say 1st gear with 4:10 and a MN6 is useless - I challenge them to take a ride with the S/O
RWHP = 440
My '99 has an LPE 427, Kooks, MN12 (Z06 tranny) Borlas.
RWHP = 539
Driving the '04 is much more 'exciting' = pulls through 1/2/3/4 like a ****.
The S/O (who has the '04) pulls me from a hole shot (even with 305's I cannot keep the wheels stuck to the pavement
).For those who say 1st gear with 4:10 and a MN6 is useless - I challenge them to take a ride with the S/O
Thread Starter
Burning Brakes
Joined: Nov 2007
Posts: 1,241
Likes: 0
From: Oceanside New York
Awesome stories 
I am still looking for a black A4 97-04 (If anyone can help, please do!), and if I change the gear ratio to 4.10, i'm gonna get acceleration out the ying yang, however, my top end will drop like a rock and my gas mileage will be like 8MPG LOLOL
What's your take on that?
I am still looking for a black A4 97-04 (If anyone can help, please do!), and if I change the gear ratio to 4.10, i'm gonna get acceleration out the ying yang, however, my top end will drop like a rock and my gas mileage will be like 8MPG LOLOL
What's your take on that?
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 179
From: S.W. Ohio. . . . . . NRA Life Member
No problem as long as that's what you want your C5 to turn into. The only drawback to those going to these "sick"
ratios is the law of unintended consequences. But it looks like you know exactly where you want to end up... more power to ya' 
In regrads to those saying "new"... Getrag never mfgrd C5 carriers with the 3.90 or 4.10 ratios. So, any "pumpkin" purchased with these ratios will have to of been a rebuilt variety. And not that this is bad or anything... just a data clarification.
and if I change the gear ratio to 4.10, i'm gonna get acceleration out the ying yang,
Thread Starter
Burning Brakes
Joined: Nov 2007
Posts: 1,241
Likes: 0
From: Oceanside New York
Oh you're right, you're right...4.10 ratio is insane anyway and a complete waste of time off the track...g'head, drive that in the snow LOLOL!! ^_^. Ultimately, i'm looking for a 3.10 variant or maybe, at the absolute highest 3.43...I can hold ground with those very well without sacrificing the fuel tank entirely.
Race Director
Joined: Mar 2005
Posts: 14,440
Likes: 3
From: MD
St. Jude Donor '11
Oh you're right, you're right...4.10 ratio is insane anyway and a complete waste of time off the track...g'head, drive that in the snow LOLOL!! ^_^. Ultimately, i'm looking for a 3.10 variant or maybe, at the absolute highest 3.43...I can hold ground with those very well without sacrificing the fuel tank entirely.
ZO6 3.42 is what you want...good luck.
