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4.56 or 4.11?

This is a discussion on 4.56 or 4.11? within the Automatic Transmission forums, part of the Drivetrain category; I have a 98 A4 with 80k miles. Car will have lt headers, lid, ls6 intake and a 3800 stall. ...

  1. #1
    Junior Member
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    Sep 2005
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    silver
    1998 z28

    4.56 or 4.11?

    I have a 98 A4 with 80k miles. Car will have lt headers, lid, ls6 intake and a 3800 stall. What gears would be best for a daily driver? 4.11 or 4.56? What would my RPMs be at with each at 60-70mph? What gas mileage do you all see with these gears?

  2. #2
    Senior Member
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    Jacksonville, FL
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    My brother has 4.10's and a high stall in his car, says he wished he would've gone no higher than 3.73, but that's just him. I originally had 2.73 and got a deal on a complete 3.42 rear out of an M6 car and happy (lost an average of 5 MPG). To see what your RPM/MPH will be see the calculator at www.f-body.org/gears/
    A4(3.42)TA Cover/Nittos/Vig 3200/Corsa Catback/FTRA/BMR Boxed SFC, STB, ACLA, APHR/Predator Custom Tune...

  3. #3
    member since may 2000 nhraformula's Avatar
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    n/w chicago
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    black
    2000 nhra edition formula

    nothing bigger than a 3.73 on an automatic trans car for daily driving.
    to top it off, with what you are looking to do, youre going to need a 12 bolt rear.
    2000 nhra edition formula
    a few bolt ons, 379 rwhp
    11.96 @113.25

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