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3.23 gears to 3.73 in my a4?

This is a discussion on 3.23 gears to 3.73 in my a4? within the Drivetrain forums, part of the LSx Technical Help Section category; anybody changed form 3.23's to 3.73's in an auto? is there a good gain? big difference? or wat?...

  1. #1
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    2000 z28 Camaro

    3.23 gears to 3.73 in my a4?

    anybody changed form 3.23's to 3.73's in an auto? is there a good gain? big difference? or wat?

  2. #2
    Veteran 0rion's Avatar
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    98 Formula
    06 duramax

    I swapped to a strange 12 bolt last year with 3.73's in it. Definite difference. I can't really give you any numbers because I haven't really driven the car much since the install and never keep track of my gas mileage but I can tell you with the gear change and a 3500 stall my around town mileage went way down. I'm not into modding for gas mileage so I don't keep track of it. After my heads and cam in a week or two and I tune it I plan on just getting some mileage numbers to see where it's at.
    Performance was a pretty decent jump. Once again, I don't have any numbers just seat of the pants. Definite difference. I doubt I'll get it to the track again this year but maybe this fall I'll make it out.

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    thanks

  4. #4
    member since may 2000 nhraformula's Avatar
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    black
    2000 nhra edition formula

    about an .2 tenth drop in the 1/4
    2000 nhra edition formula
    a few bolt ons, 379 rwhp
    11.96 @113.25

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