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What gear ratio should I have?

Discussion in 'Lifted & Offroad Suspension' started by drumrob, Mar 17, 2009.

  1. drumrob

    drumrob Rockstar 100 Posts

    I have an 07 Silverado Crew Cab. Does anybody know what gear ratio I should have and what gear ratio is stock? My truck is a little slow when taking off and I have a programmer,exhaust,and intake. im thinking I might have the wrong gear ratio. I bought the truck lifted at the dealer. Thanks in advance
  2. dwill3015

    dwill3015 Epic Member 5+ Years ROTM Winner 1000 Posts

    Check the sticker in your glovebox for one of there codes. Yours is probably the more common GT4 (3.73 ratio)

    Gho axle rear,3.54 ratio
    gk9 axle rear,4.63 ratio
    gl3 axle rear,6.17 ratio
    gm1 axle rear,2.59 ratio
    gm3 axle rear,3.45 ratio
    gm8 axle rear,2.56 ratio
    gn9 axle rear,4.11 ratio
    gq1 axle,std ratio
    gty axle,wide track
    gt4 axle rear,3.73 ratio
    gt5 axle rear,4.10 ratio
    gt7 axle rear,3.33 ratio
    gt8 axle rear,4.10 ratio
    gu2 axle rear,2.73 ratio
    gu4 axle rear,3.08 ratio
    gu5 axle rear,3.23 ratio
    gu6 axle rear,3.42 ratio
    gv2 axle rear,5.83 ratio
    Last edited: Mar 17, 2009
    1 person likes this.
  3. drumrob

    drumrob Rockstar 100 Posts

    cool thanks. What gear ratio should I have right now with 33" tires do you know?
  4. dwill3015

    dwill3015 Epic Member 5+ Years ROTM Winner 1000 Posts

    I think some of the major off-road sites like 4wheel parts has a chart that will tell you what would be optimum for your setup.
  5. drumrob

    drumrob Rockstar 100 Posts

    Cool Ill swing by then thanks for the help

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