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Thread: Gear question?

  1. #1

    Default Gear question?

    I bought a 2009 silverado with a bds 6 inch and 35's. I currently have 3.42 gears, but I am wanting to regear. I don't know what rear end I have to know which gears to order. I am thinking about 4.10's. I do mostly road driving and pulling trailers also. Any input would be great.
    H&G Thomas Farms
    2009 Silverado Z-71 crew
    6 inch BDS lift
    35x12.50 Mickey Thompson ATZ
    20 inch Cativa wheels

  2. #2
    Jr. Engineer hundojoe's Avatar
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    You have a 10 bolt rear, I would go with 4.56's if your running 35's and pulling trailers, and maybe even 4.88's if you pull trailers all the time. And I would also up grade to a aftermarket limited slip or a detriot locker.
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  3. #3
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    I would go with 4.10s if the majority of your driving is highway etc, since with the 4.10s and the 6spd auto you will still be able to pull pretty well and also handle a trailer when you need to. with 35in tires that really is your best "comprimise" ratio since it allows some milage, a pick up in power, and not so much that you cant drive it on the highway.
    Mike

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  4. #4
    Jr. Engineer jwco5.3's Avatar
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    Quote Originally Posted by murdog94 View Post
    I would go with 4.10s if the majority of your driving is highway etc, since with the 4.10s and the 6spd auto you will still be able to pull pretty well and also handle a trailer when you need to. with 35in tires that really is your best "comprimise" ratio since it allows some milage, a pick up in power, and not so much that you cant drive it on the highway.
    This is true. the six speed transmission will make a difference.

  5. #5

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    Will regearing do anything to my factory warranty? Yes I do have the six speed in my truck also.What kind of gears do you rcommend?
    H&G Thomas Farms
    2009 Silverado Z-71 crew
    6 inch BDS lift
    35x12.50 Mickey Thompson ATZ
    20 inch Cativa wheels

  6. #6

    Default

    Quote Originally Posted by Klink82 View Post
    Will regearing do anything to my factory warranty? Yes I do have the six speed in my truck also.What kind of gears do you rcommend?
    No, the only way it will is if they show that it was the cause of whatever problem arises, but as a general rule no. Also since you have the 3.42 stock you will probably want to go to the 4.10 which should keep you around that stock performance range. going from a 3.42 to 4.56 or 4.88 would be a large jump in driving rpms. would definately make it pull better from a stop though. If your truck was stock with 3.73 then I would say 4.56 but you dont. Here is a simple gear ratio chart that can help you out.
    http://www.4wheelparts.com/aux_incl/gear_ratio.html
    David
    2004 Silverado 2500 Crew Cab 4x4, AMSOIL EA air filter, Granatelli MAF sensor, Throttle body spacer, Magnaflow exhaust (true dual to 2 in 1 out muffler), 6" ProComp lift (add a leaf and 5" superlift rear block), Bilstein shocks, 35's (Cooper Disoverer ST) and 4.10 gears, Rhino Liner, EGRUSA fender Flares and widow visors, extended stainless steel brake lines, firestone airbags w/onboard air compressor, Pioneer Avic X940BT navigation, Accel backup camera.
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  7. #7

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    My '05 Silverado came with 3.42's and I installed 4.10's, my '96 Suburban came with 3.73's and I installed 4.56's. If you do alot of highway driving than the 4.10's. The 4.10's seem to be a good comprimise between highway driving and pulling power.

  8. #8

    Default

    I found a local shop to use to put 4.10 yukon gears for between 800-1000 for everything. Is that a reasonable price? Compared to everyone else.
    H&G Thomas Farms
    2009 Silverado Z-71 crew
    6 inch BDS lift
    35x12.50 Mickey Thompson ATZ
    20 inch Cativa wheels

  9. #9

    Default

    if your talking front and rear that is a really good price. think I paid 1200 front and rear but not yukon gears. If you are talking only rear others on here have installed yukons and can say. Since you have 4 wheel drive you will need to do front and rear. wouldnt want to hit 4wd with 4.10s in the rear and 3.42 up front.
    David
    2004 Silverado 2500 Crew Cab 4x4, AMSOIL EA air filter, Granatelli MAF sensor, Throttle body spacer, Magnaflow exhaust (true dual to 2 in 1 out muffler), 6" ProComp lift (add a leaf and 5" superlift rear block), Bilstein shocks, 35's (Cooper Disoverer ST) and 4.10 gears, Rhino Liner, EGRUSA fender Flares and widow visors, extended stainless steel brake lines, firestone airbags w/onboard air compressor, Pioneer Avic X940BT navigation, Accel backup camera.
    http://www.gmtruckclub.com/forum/sho...Silverado-2500
    1960 Land Rover Series II 88
    2001 Pontiac Sunfire
    2013 Toyota Avalon Limited (Wife's Car)
    NRA Life Member

  10. #10

    Default

    That was for front and rear with yukon gears.
    H&G Thomas Farms
    2009 Silverado Z-71 crew
    6 inch BDS lift
    35x12.50 Mickey Thompson ATZ
    20 inch Cativa wheels

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