06FASTLQ9

iTrader: (2)

The other thing 4.10s is from a dig i have no traction i spin most of first gear and my rpm is to high on the highway it killed my gas milage.

swift700

iTrader: (3)

4:10's, torque converter and 4wd is a great combo. I have never been beat across an intersection racing off the lights. As a matter of fact, I've never been beat on the street, period.

Just ran a smallblock Pinto and a big-turbo Talon the other day and cleaned up on both. Had a short roll-on from around 20mph with an Audi R8 and we were neck-and-neck up till around 60 when we got into traffic.

colekill

my plan was always to ditch my 3.42s for some 3.90, 4.10s. now i'm kind of glad I didn't...

hummmm

swift700

iTrader: (3)

OK, Cooper boy. I'm sure that truck's a real killer off the line.

colekill

lol. sorry swift boy my truck is not fast, but Don't worry, you will find someone more badass to beat you one day.

I'm just sad it wont be me in my queer little cooper

06Sierra2

coming from 3.23s with oversize rim/tires to 4.10 was my best bang for buck mod...

lady3bglover

iTrader: (3)

ditto... and I went with an Eaton Posi when we did the gear swap. That was 6+ yrs ago, and soon I'll be ready for a new set.

swift700

iTrader: (3)

I've come up against some badass diesels at the track and my goal since then has been to beat them. Funny thing is, I never see them on the street. Oh, and I drove one of those supercharged Coopers... I'd have to say it's a fun little car.

Another thing I like about 4.10's is their additional towing capability.

1Bear

iTrader: (1)

I believe what a lot of people with average power are experiencing is once you’ve exceeded the mechanical advantage you had in the lower gears, a comparable powered vehicle starts closing the gap on you because even though they are in 2nd with a higher rear gear versus the other person in 3rd with a lower rear gear is actually due to the vehicle with 3.42 gears in 2nd having a lower final drive ratio than a vehicle with 4.10 gears in 3rd. With a 4L60/65E transmission having a 1.63 2nd gear ratio, the final drive ratio with 3.42’s is equivalent to a 5.57 rear gear ratio in 2nd, where the 3rd gear having a 1.00 ratio is what it is and is only 4.10. If you have traction to get off the line, generally the vehicle with lower gears will out accelerate the other, but if you don’t have the power needed to keep pulling on the higher end, it will just plateau. This is where the otherwise comparably powered higher rear gear vehicle will have an advantage by being in a lower gear giving it an overall lower final gear ratio helping it continue to pull a little longer.

A couple of good examples at each end of the spectrum are two vehicles I own. One is a basically stock Canyon with a 5.3L and 3.73 gears and the other is my C³ with a supercharged 6.0L and 4.56’s. The Canyon can’t get traction for nothing out of the hole and then runs out of power on the top end, and where a higher rear gear such as 3.42’s would most likely have been a better choice. The C³ being AWD doesn’t have traction issues and has the top end power to keep pulling up top, so the gears are an overall advantage and not too terribly bad at highway speeds considering my rather tall tires. Basically there is no one size fits all solution for properly gearing a vehicle, and instead depends on the whole package as to what will work best.