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4.10 gears? Good idea?

This is a discussion on 4.10 gears? Good idea? within the Firebird / WS6 forums, part of the Vehicle Specific category; I have a stock 02 ws6 with ram air with some mods done, such as the slp air induction package ...

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    Junior Member FLEX3269's Avatar
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    Question 4.10 gears? Good idea?

    I have a stock 02 ws6 with ram air with some mods done, such as the slp air induction package and exhaust system. I was looking to get new gears but im worried about the gas mileage. I drive the car every day and was wondering if anyone else had the gears or knew how much i would lose as far as gas mileage. any help would be very useful!

    Tony

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    A4 or M6?

    I have a friend with a Firehawk A4 w/4.10's, they were in the car when he bought it. He says the mileage sucks, and that it's too much gear for an A4.

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    Member craig02ta's Avatar
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    same here bought it that way and the gas sucks i dont know why he didnt go w/ 3:73s

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    If you have a m6 it doesnt hurt too bad, if your an A4 get 3.73s unless its not your everyday driver.

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    Junior Member FLEX3269's Avatar
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    I have an automatic 4 speed

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    Junior Member FLEX3269's Avatar
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    Quote Originally Posted by StuntmanMike View Post
    A4 or M6?

    I have a friend with a Firehawk A4 w/4.10's, they were in the car when he bought it. He says the mileage sucks, and that it's too much gear for an A4.
    I have an automatic 4 speed

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    Go 3.73 with 4.10s you well get shitty mileage

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    Senior Member t-rock's Avatar
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    i read one of the other posts where the m6 gets 18 - 25 mpg w/ 410s and
    a4s do ok with 3.73s thats just what ive read i have 3.42s guys that run n2o seem to to like a 3.42

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    Member whiteLS1TA's Avatar
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    hey i have a 2001 trans am m6 i dont know what gears it comes with stock but would 3.42 make a difference or should i slap on some 3.73's?

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    Quote Originally Posted by whiteLS1TA View Post
    hey i have a 2001 trans am m6 i dont know what gears it comes with stock but would 3.42 make a difference or should i slap on some 3.73's?
    FYI, 3.42's come stock on the M6's.

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    running on empty Madcity T/A's Avatar
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    and if its an M6 get the 4.10's or 4.11's

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    Member dlmeadows's Avatar
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    4.10's are great on m6 cars. i have slp lid exhaust and 4.10's and average between 23-26 mpg with 60/40 hwy city

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    Quote Originally Posted by StuntmanMike View Post
    A4 or M6?

    I have a friend with a Firehawk A4 w/4.10's, they were in the car when he bought it. He says the mileage sucks, and that it's too much gear for an A4.
    What's the difference between an A4 and a M6?

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    Rice Killa JwMonE99's Avatar
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    A4= Automatic 4 speed
    M6= Manuel 6 speed

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    Don't tread on me!
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    Quote Originally Posted by JwMonE99 View Post
    A4= Automatic 4 speed
    M6= Manuel 6 speed
    Thanks - I'm a newbie.

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    Member whiteLS1TA's Avatar
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    oh i didnt know that i thought that the regualr trans ams came with 3.08's and the ws6 came with the 3.42's i guess i was wrong but yea i was thinking of going with the 4.10's



    Quote Originally Posted by StuntmanMike View Post
    FYI, 3.42's come stock on the M6's.

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    Slow'er'Ass Mr. Luos's Avatar
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    M6 cars came stock with either 3.23's or 3.42's.

    I run 4.11's on my M6 car. Mileage sucks, but that isn't because of the gears so much as it is the motor.


    No matter what, tighter gears will lower mileage. An A4 with 4.10's will move out, but mileage will SUCK.
    M6 with 4.10's will get better mileage thanks to that 0.5 final gear. I get about 20MPG going 75MPH with 4.11's and a large cammed 402ci.

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    Senior Member t-rock's Avatar
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    Quote Originally Posted by whiteLS1TA View Post
    oh i didnt know that i thought that the regualr trans ams came with 3.08's and the ws6 came with the 3.42's i guess i was wrong but yea i was thinking of going with the 4.10's
    regular t/a s came with 2.73 ws6 a4 3.08 and ws6 m6 3.42

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    Senior Member Street Lethal's Avatar
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    Quote Originally Posted by FLEX3269
    I have a stock 02 ws6 with ram air with some mods done, such as the slp air induction package and exhaust system. I was looking to get new gears but im worried about the gas mileage. I drive the car every day and was wondering if anyone else had the gears or knew how much i would lose as far as gas mileage. any help would be very useful!
    Tony, don't bother yourself with 4.10 gears, or even 3.73's, for that matter. Get yourself a decent stall speed matched to your stock gearing and future engine expectations, then let the real modding begin. Rear end gearing should always remain high (lower numerically), as this will allow for the best gas mileage, quicker loaded boost (if you decide to run a turbo), higher traps at the track, and longer engine life @ higher RPM. Back when I was racing during the early 90's, couldn't wait to throw on my 4.56's. A few weeks later, went down to 4.11's, then 3.73's, 3.55's, and before I knew it, I was back with the stock 3.23 gearing. Contemplate your goals first, then find a happy medium regarding your gears....
    Last edited by Street Lethal; 08-11-2007 at 08:51 AM.

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    My personal opinion, and this is based on nothing scientific, is that 3.23 or 3.42's would be perfect for an A4.

    I had a GTA with 3.27's, I thought they were great.

    I test drove a Formy with 2.73's the other day, and I could definitely tell they were there. 1600rpm at 65mph. A little low, but I'll keep them for the mileage.

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