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  1. #1
    Junior Member FLEX3269's Avatar
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    2002 Trans Am

    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

  2. #2
    Senior Member
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    Navy Blue Metallic
    '00 Formy A4

    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.

  3. #3
    Member craig02ta's Avatar
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    04 Silverado

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

  4. #4
    Impounded
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    2000 Trans Am

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

  5. #5
    Junior Member FLEX3269's Avatar
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    2002 Trans Am

    I have an automatic 4 speed

  6. #6
    Junior Member FLEX3269's Avatar
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    2002 Trans Am

    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

  7. #7
    Impounded
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    2000 Trans Am

    Go 3.73 with 4.10s you well get shitty mileage

  8. #8
    Senior Member t-rock's Avatar
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    black
    2002 firehawk 94 Z28

    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

  9. #9
    Member whiteLS1TA's Avatar
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    Artic white
    2001 Trans am

    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?

  10. #10
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    Navy Blue Metallic
    '00 Formy A4

    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.

  11. #11
    running on empty Madcity T/A's Avatar
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    2000 Pontiac Trans Am WS6

    and if its an M6 get the 4.10's or 4.11's

  12. #12
    Member dlmeadows's Avatar
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    metallic pewter
    2001 WS.6 Trans Am

    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

  13. #13
    Don't tread on me!
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    Pewter
    2002 WS6 Trans Am

    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?

  14. #14
    Rice Killa JwMonE99's Avatar
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    Black With T-Tops
    96 Z28 M6

    A4= Automatic 4 speed
    M6= Manuel 6 speed

  15. #15
    Don't tread on me!
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    Pewter
    2002 WS6 Trans Am

    Quote Originally Posted by JwMonE99 View Post
    A4= Automatic 4 speed
    M6= Manuel 6 speed
    Thanks - I'm a newbie.

  16. #16
    Member whiteLS1TA's Avatar
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    Artic white
    2001 Trans am

    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.

  17. #17
    Slow'er'Ass Mr. Luos's Avatar
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    Red Tint Jewelcoat
    2008 Trailblazer SS

    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.

  18. #18
    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

  19. #19
    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 07:51 AM.

  20. #20
    Senior Member
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    Navy Blue Metallic
    '00 Formy A4

    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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