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  1. 04-26-2010, 05:33 PM #1
    justinmc978
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    sold: 1999 firebird
    1998 Trans Am

    3.42 gears on an A4.

    have a buddy wanting to buy an LT1 with 3.42 gears installed, probably stolen from a base 6 speed car, can anyone tell me waht kind of rpms he'll be running on the highway(70mph) i'm not firmiler with autos or gear ratios
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  2. 04-26-2010, 05:36 PM #2
    tatertot91
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    Sunset Orange Metalic
    2001 Camaro SS

    mine has 3.73s and i spin 2500 at 70
    I know there is a site that does the calculations for you, just giving you an idea
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  3. 04-26-2010, 05:54 PM #3
    justinmc978
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    sold: 1999 firebird
    1998 Trans Am

    Quote Originally Posted by tatertot91 View Post
    mine has 3.73s and i spin 2500 at 70
    I know there is a site that does the calculations for you, just giving you an idea
    perfect got my answer, thanks tater
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  4. 04-26-2010, 06:28 PM #4
    Cutlass
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    To calculate the MPH and RPM, use this calculator. I think the stock tire diameter is 25.6"
    4L60e ratio are
    1st 3.06
    2nd 1.75
    3rd 1.00
    4th 0.70
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  5. 04-26-2010, 06:47 PM #5
    tatertot91
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    Sunset Orange Metalic
    2001 Camaro SS

    no problem, cutlass got the link i was talking about ^^^
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