More ZIP Around Town....
Burning Brakes
Joined: Mar 2010
Posts: 1,189
Likes: 4
From: Freeport, FL
)headers and x-pipe will yield higher rpm power and torque with less noticable gains in the lower rpm's.
Burning Brakes
Joined: Mar 2010
Posts: 1,189
Likes: 4
From: Freeport, FL
A4's have 2.73 or 3.08 (performance option) if I recall. Sorry, I don't research automatic specs often.
My M6 with stock 3.42's does very well, but a set of 4.10's may be in the future. I like to keep the rpm's up
Team Owner
Joined: Jun 2001
Posts: 55,394
Likes: 1
Then I would first try and find cars with 3.73's and then 4.10's and compare the 2.
Drifting
Joined: Feb 2006
Posts: 1,600
Likes: 2
From: Outer banks North Carolina
Racer
Joined: Oct 2008
Posts: 332
Likes: 0
From: Lees Summit Mo
I added a cam a few years ago and lost a bit of low end torque. Long tube Headers gave me back a noticable amount of that torque on the low side.
I also have Corsa Touring and the headers really make them bark!!!
I also have Corsa Touring and the headers really make them bark!!!
Team Owner
Joined: Sep 2001
Posts: 23,283
Likes: 906
From: Lake Elsinore, CA
I have 4.10 gears in my M6 and put 3.42 gears and a high stall TC in the wife's A4. They both have headers, hi-flo cats and cat back and the M6 has heads/cam. The gears were easily the best bang-for-buck performance upgrade on both and I did gears last on the M6 - very noticeable change on both C5's. After I did gears on each, I was --->>>
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Thread Starter
Pro
Joined: May 2010
Posts: 624
Likes: 1
From: Northern NJ
I have 4.10 gears in my M6 and put 3.42 gears and a high stall TC in the wife's A4. They both have headers, hi-flo cats and cat back and the M6 has heads/cam. The gears were easily the best bang-for-buck performance upgrade on both and I did gears last on the M6 - very noticeable change on both C5's. After I did gears on each, I was --->>>
Safety Car
Joined: Dec 2004
Posts: 3,526
Likes: 20
From: Santa Fe TX
I don't think I'd be happy with 4.10s.
My challenger has 3.92 rear axle and 1st gear is essentially unusable. 2nd feels like first and I can take off in 3rd if I want to.
Maybe the 6 speed transmission is different in the Dodge but I don't think it would feel right in the Vette.
My challenger has 3.92 rear axle and 1st gear is essentially unusable. 2nd feels like first and I can take off in 3rd if I want to.
Maybe the 6 speed transmission is different in the Dodge but I don't think it would feel right in the Vette.
Burning Brakes
Joined: Jun 2010
Posts: 812
Likes: 2
From: Metairie Louisiana
The mechanical advantage given to you with a 3.90 diff would make the car feel as though it had picked up 40hp, and so would a good LT headers system. Depends on which way you want to go. I believe the headers with a tune would show its most gains in mid to higher rpm, the 3.90 diff gives you its advantage everywhere. If you later chose more NA mods the 3.90 diff would amplify the later mods.
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 291
From: Pasco WA
I don't think I'd be happy with 4.10s.
My challenger has 3.92 rear axle and 1st gear is essentially unusable. 2nd feels like first and I can take off in 3rd if I want to.
Maybe the 6 speed transmission is different in the Dodge but I don't think it would feel right in the Vette.
My challenger has 3.92 rear axle and 1st gear is essentially unusable. 2nd feels like first and I can take off in 3rd if I want to.
Maybe the 6 speed transmission is different in the Dodge but I don't think it would feel right in the Vette.
First gear is pretty low anyway, so you have to shift to second alot sooner with 4.10s. I went to 4.10s from stock 3.23s in my '01 Cobra, and hated it. With drag radials, it may have been better, but you just end up spinning street tires. 3.42 is a nice compromise for most people on the street.
Race Director
Joined: Aug 2003
Posts: 16,270
Likes: 30
From: "It's 106 miles to Chicago, we've got a full tank of gas, half a pack of cigarettes, it's dark, and
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My black car has LT's, intake and tune. I have changed my trans to a RPM Level V configured as an M12 (Z06), along with 3.90's.
Totally different car now. Much more SOTP quickness with the closer and lower ratio gears in the trans and the 3.90 final drive ratio.
The end result is I am running about 500 rpm higher in each gear, and now 6th gear is a driveable usable gear. If I want to pass when in 6th, no more downshifts needed unless I need to get around something fast.
I'm sure my mileage has suffered a couple of mpg or so, but honestly that wasn't a big concern. The gears in 1st, 2nd and 3rd are much closer together now. Once I get about 500 miles on the trans (at about 350 now), I'll change the fluid again and I'll feel it's broken in sufficiently to open it up a little. Up until now, I've had to hold back.....
Totally different car now. Much more SOTP quickness with the closer and lower ratio gears in the trans and the 3.90 final drive ratio.
The end result is I am running about 500 rpm higher in each gear, and now 6th gear is a driveable usable gear. If I want to pass when in 6th, no more downshifts needed unless I need to get around something fast.
I'm sure my mileage has suffered a couple of mpg or so, but honestly that wasn't a big concern. The gears in 1st, 2nd and 3rd are much closer together now. Once I get about 500 miles on the trans (at about 350 now), I'll change the fluid again and I'll feel it's broken in sufficiently to open it up a little. Up until now, I've had to hold back.....
Team Owner
Joined: Jun 2001
Posts: 55,394
Likes: 1
I don't think I'd be happy with 4.10s.
My challenger has 3.92 rear axle and 1st gear is essentially unusable. 2nd feels like first and I can take off in 3rd if I want to.
Maybe the 6 speed transmission is different in the Dodge but I don't think it would feel right in the Vette.
My challenger has 3.92 rear axle and 1st gear is essentially unusable. 2nd feels like first and I can take off in 3rd if I want to.
Maybe the 6 speed transmission is different in the Dodge but I don't think it would feel right in the Vette.
Administrator
Joined: Mar 2001
Posts: 368,389
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From: In a parallel universe. Currently own 2014 Stingray Coupe.
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Gears will give you a nice off the line improvement. 
Burning Brakes
Joined: Sep 2010
Posts: 901
Likes: 1
From: LaPorte Indiana
just wondering have you checked around for prices on a 4.10 gear swap? its about the same as a LT headers and xpipe install
Race Director
Joined: Jan 2007
Posts: 18,643
Likes: 14
From: Norman Oklahoma - The Only State in the Union with no Blue Counties!
I guess it depends on what is expected. I am doing a cam swap on my MN6 3.42 coupe in the morning. Already have LT headers, Vararam B2 and Corsa CB.
Maybe I should say WE are doing the swap. Monday and new dyno tune on the same Mustang unit my stock coupe ran, then headers and tune ran on. Cam specs 228/230 .585 .588 113 LSA, new springs as well.
Let you know the results!
Maybe I should say WE are doing the swap. Monday and new dyno tune on the same Mustang unit my stock coupe ran, then headers and tune ran on. Cam specs 228/230 .585 .588 113 LSA, new springs as well.
Let you know the results!
Melting Slicks
Joined: Sep 2006
Posts: 2,736
Likes: 7
From: Redding CA
The most ZIP would be achieved from the gears w/o a doubt. The headers/x-pipe will require a tune also and you may pick up 35-40 horsepower but the rear gear will FEEL like you picked up 50-75...you'll actually get to use 6th gear also 
