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Thread: Need Help Choosing Gears

  1. #1

    Need Help Choosing Gears

    I've got a 2000 GMC Sierra rcsb with the 4.3l v6 and stock (3.42) gears. I daily drive it and live in an area that has a lot of hills, but I also do a decent amount of highway driving. The truck has to downshift into 3rd and sometimes 2nd just to get up the hills, and I was wondering if a set of 4.10 gears would solve this issue. The only mod my truck has is a Magnaflow cat back. Suggestions would be appreciated! Thanks!

  2. #2
    Join Date
    Dec 2008
    Location
    South Carolina
    Posts
    795
    4.10s would def be a great investment
    2008 GMC Sierra SLE....370ci LY6 with some goodies SOLD
    1995 C2500- LS1 swap with a mp112
    build thread- http://www.ls1truck.com/forums/lsx-t...-ls1-swap.html

  3. #3
    Join Date
    Sep 2008
    Location
    Arizona/Utah
    Posts
    3,955
    4.10s and a tune would definitely be a good choice.

  4. #4
    Join Date
    Oct 2010
    Location
    Pearl,MS
    Posts
    460
    5.3!!!!! nah.. A tune would be my first thing I did. I wish I had my 3.23s back honestly. 4.10s would certainly stop the downshifting. I have 3.73s and mine hardly ever does it, unless I am going up a huge hill. If I had to choose another ratio for a 2wd, it would be 3.42. I would love to have 3.73 or 4.10s on a 4wd on 33s.

    2005 CCSB Silverado- 5.3
    Airaid CAI
    True Dual Exhaust
    NPTune
    3.73 Yukon Duragrip limited Slip Diff.

  5. #5
    Join Date
    Feb 2012
    Posts
    277
    If it doesn't down shift alot keep what you have, if it does then 3.73, 0r 4.10's.

  6. #6
    Join Date
    Aug 2008
    Location
    mansfield texas
    Posts
    3,520
    Put in third on the hills like you would while racing and wait til u can 6.0/80e/and good gears swap

  7. #7
    Thanks for all the input! I figured the best thing to do for the time being would be to shift the truck into 3rd on the hills. Everyone I know that drives one of these trucks with the v6 has the same problem and complains about how underpowered it is. The only reason why I bought a truck that had the v6 is to save money on insurance. Hopefully in the future I can get my hands a v8 truck!

  8. #8
    Join Date
    Oct 2011
    Location
    San Antonio TX
    Posts
    1,184
    Buy a w/t with v8 n yull be fine lol.


    4.8, TSP 220, 6L90 swap, 3400 Stall, 4.10s w/30" drag radial and T76 @ 16lbs.
    Best ET 11.54@114 w 1.52 60ft
    Raceweight 4905 lbs.

  9. #9
    Join Date
    Oct 2011
    Location
    San Antonio TX
    Posts
    1,184
    Quote Originally Posted by Crazy Blu View Post
    Put in third on the hills like you would while racing and wait til u can 6.0/80e/and good gears swap
    Thats what i do n i get 15mpg cuz of that one hill in castroville.


    4.8, TSP 220, 6L90 swap, 3400 Stall, 4.10s w/30" drag radial and T76 @ 16lbs.
    Best ET 11.54@114 w 1.52 60ft
    Raceweight 4905 lbs.

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