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Old Nov 27, 2006 | 06:41 PM
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Default True Or False

1. The reason to swap 3:43's with 4:10's is to accelerate the car faster to a shorter distance faster.

2. The 4:10's move the car with more torque than 3:43's because it takes more rpm to move 4:10's to a same distance as 3:43's.

3. 4.10's make the engine rev faster because it takes more rpm to turn the tires 1 full turn.

Anyone correct me if im wrong I am new to gears, My understanding is 4:10's will reduce top end speed because they spin slower at any rpm as 3:43's but will move the cars weight faster than 3:43's.
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Old Nov 27, 2006 | 06:51 PM
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3.42 is what comes stock..lol. they will decrease top speed, but not by much cause teh car is geared so high in 6th, 5th will go to around 150 or so. 4.102 will make your car quicker because it will allow the motor to spin quicker to get into the powerband. In the q/m, it won't really effect mph, it'll just get you to the end quicker, if that makes sense.
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Old Nov 27, 2006 | 06:51 PM
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1. so tru bro
2. yuper
3. cho got it mang


Torque moves mass, gears multiply torque. Simply put, a basic understanding is like this. Lets say you get 300 lbs/ft of torque at the fly wheel, well, 300 lbs/ft wouldnt move my girlfriends civic out of its own way, so how does a 3600 lb F-body move out so quick. Well first gear is what 2.66:1 so take 300 x 2.66 and you get 800 ft/lbs now multiply 800 x 3.42 and you get 2780 ft/lbs at the rear wheels moving your car. Now if you take 800 and multiply it by 4.10 you get 3280 lbs/ft moving your car
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Old Nov 27, 2006 | 06:56 PM
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Originally Posted by alamantia
1. so tru bro
2. yuper
3. cho got it mang


Torque moves mass, gears multiply torque. Simply put, a basic understanding is like this. Lets say you get 300 lbs/ft of torque at the fly wheel, well, 300 lbs/ft wouldnt move my girlfriends civic out of its own way, so how does a 3600 lb F-body move out so quick. Well first gear is what 2.66:1 so take 300 x 2.66 and you get 800 ft/lbs now multiply 800 x 3.42 and you get 2780 ft/lbs at the rear wheels moving your car. Now if you take 800 and multiply it by 4.10 you get 3280 lbs/ft moving your car
So brandon is wrong he is thinking backwards.
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Old Nov 27, 2006 | 07:02 PM
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So in reality it's moving my car faster in any distance faster by spining my tires slower with more torque, kinda like a harder kick start from a stop. So a all motor car would benifit more from this than a f/i car because it would cause turbo to loose spool time.
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Old Nov 27, 2006 | 07:19 PM
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Originally Posted by BrandonDrecksage
3.42 is what comes stock..lol. they will decrease top speed, but not by much cause teh car is geared so high in 6th, 5th will go to around 150 or so. 4.102 will make your car quicker because it will allow the motor to spin quicker to get into the powerband. In the q/m, it won't really effect mph, it'll just get you to the end quicker, if that makes sense.
Sorry I mean 3:42's not 3:43's
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Old Nov 27, 2006 | 07:40 PM
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Originally Posted by XpEdItIoUs
So brandon is wrong he is thinking backwards.
how am I wrong and thinking backwards?
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Old Nov 27, 2006 | 07:44 PM
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Originally Posted by XpEdItIoUs
So in reality it's moving my car faster in any distance faster by spining my tires slower with more torque, kinda like a harder kick start from a stop. So a all motor car would benifit more from this than a f/i car because it would cause turbo to loose spool time.
Youve got it backwards.
Higher gearing ratio = "smaller gears".
With 3.42 gears, your gear will spin 3.42 rotations in X amount of time.
With 4.11 gears your gear will spin 4.11 rotations in X amount of time.
You will get more torque to the wheels with a higher gear ratio, but the draw back is you loose top speed in each gear. For example with 3.42 gears you can take 1st(with a M6) to about 45-50mph, with 4.10 gears it would be a slightly lower speed.
Here this will help the most:
http://science.howstuffworks.com/gear-ratio.htm
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Old Nov 27, 2006 | 07:45 PM
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Originally Posted by BrandonDrecksage
how am I wrong and thinking backwards?
Sorry i miss read, I thought you where talkin about 3:42's the whole time.
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Old Nov 27, 2006 | 07:52 PM
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Originally Posted by JD_AMG
Youve got it backwards.
Higher gearing ratio = "smaller gears".
With 3.42 gears, your gear will spin 3.42 rotations in X amount of time.
With 4.11 gears your gear will spin 4.11 rotations in X amount of time.
You will get more torque to the wheels with a higher gear ratio, but the draw back is you loose top speed in each gear. For example with 3.42 gears you can take 1st(with a M6) to about 45-50mph, with 4.10 gears it would be a slightly lower speed.
Here this will help the most:
http://science.howstuffworks.com/gear-ratio.htm
How do I have it backwards, Im saying that higher gears like 4:10's have more teeth so it spins slower at any rpm. Isn't that the reason why the car looses speed because the pinion has to go through more teeth making the ring spin slower but producing more torque since there is more engine torque going around the ring which moves the car with more force.

Last edited by XpEdItIoUs; Nov 27, 2006 at 08:08 PM.
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