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Thread: Need Help Calculating Drive Sprocket Ratio.

  1. #1
    Tuner nitrousgp's Avatar
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    Feb 2006
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    Wisconsin
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    Need Help Calculating Drive Sprocket Ratio.

    I am confusing myself with multiple formulas. What is it?

    Assuming the diff ratio is 3.29 (Stock GTP), the final drive ratio = sprocket set x 3.29.

    This would mean that a 3.29 gear set (35/35) would have a drive sprocket ratio of 1.0 correct?

  2. #2
    Tuner kabbott's Avatar
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    Sep 2004
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    Ba co. Md
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    Correct
    3.29 divided by
    35:35= 1.000000=3.29
    37:33= 1.121212=2.93
    33:37=.89189 =3.69
    2000 Impala 3.8
    4T65Ehd 3.29
    VCM ID:7DS739259ui
    VCM OS ID:9387047

  3. #3
    Quote Originally Posted by kabbott
    Correct
    3.29 divided by
    35:35= 1.000000=3.29
    37:33= 1.121212=2.93
    33:37=.89189 =3.69
    I can voucher for the 3.29 and 2.93 drive sprockets, those are correct.
    2007 Pontiac G6 GTP ~ 3.6 VVT (LY7 10.2:1) w/ 6 speed auto/manual tap)
    14.358 N/A @ 96.57 mph
    2001 Regal LS ~ L32 GenV M90; PLX SM-AFR WB; 3.4 Blower Pulley; 18* WOT; XP CAM; TOGs; N* TB; Dynotech Stage 2 Trans
    13.288 @ 104.23 mph

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