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What ET gains are 3.73 gears worth???

This is a discussion on What ET gains are 3.73 gears worth??? within the Drivetrain forums, part of the LSx Technical Help Section category; I currently have 3.23 gears in my car and I'm thinking of 3.73's. I don't drive much on the street. ...

  1. #1
    Junior Member
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    som
    2002 b4c

    What ET gains are 3.73 gears worth???

    I currently have 3.23 gears in my car and I'm thinking of 3.73's. I don't drive much on the street. I use it mostly for drag racing. It's stock except for long tubes,ORY, cat back, lid, and drag radials. My best ET is 12.88 @ 108MPH. Does anyone have an idea what kind of ET gain I might see? The car is an automatic with a stock converter.

  2. #2
    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    maybe .1 gain I'd think. So that would put you around 12.78ish. With a nice 3500 stall converter, that thing should run 12.5 to 12.6ish.

  3. #3
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    pajeff02's Avatar
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    Black & Blue
    '02 WS.6 / '07 Suburban

    We run our A4 car with a 3,200 stall and 3.73's. I did the mods in stages so it went something like this:

    Mostly stock with the factory 3.23's - 13.395

    Upgraded suspension, track tires and 3.73's - 12.885

    Added 3,200 stall and performance trans - 12.430

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