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gear ratios

Discussion in 'The Garage' started by gmc4cw, Dec 21, 2006.

  1. gmc4cw

    gmc4cw 1/2 ton status GMOTM Winner

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    what gears are you running with what trans/T-case(s) and tire height.

    I have a 700/241 with 4.56 gears and 44's. looking into some different gears and would like to know what works for you.

    mine is trail only.

    thanks for your input.
     
  2. gmc4cw

    gmc4cw 1/2 ton status GMOTM Winner

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    wow, you are viewing this but not responding. you have a trans and t-case right. you probably have gears in the diffs too. all responses are encouraged.
     
  3. Avery4jc

    Avery4jc 1 ton status Premium Member GMOTM Winner

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    700r4 slush box w/ super slipping...

    np208

    10b's w/ 3.08's

    38.5" MT Baja Claws
     
  4. 1977k5

    1977k5 3/4 ton status Vendor

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    SM465/205, 4.56 gears, 37" tires.

    If you are looking for deeper gears you are probably looking at a doubler/atlas or a dana 70 rear end.
     
  5. ccatlett1984

    ccatlett1984 1/2 ton status

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    I have a th400/np208 4.56:1 gears and 38" ground hawgs
     
  6. lochenjons

    lochenjons 1/2 ton status

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    np203 w/ partime 4.56 with 33"s soon to be 35"s
     
  7. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    700/241/4.56's/35's
     
  8. lrazer

    lrazer 1/2 ton status

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    700/241/4.56
    35's for the street, 38.5's for the trail
     
  9. JEBSR

    JEBSR 1/2 ton status

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    465/208/456's/38.5" Could stand to go with 488's but it does really well as is.
     
  10. hunterguy86

    hunterguy86 1/2 ton status

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    305/700R4/NP208 14 bolt FF, 10 bolt 3.73 gears and 35x12.50x15


    It sucks
     
  11. Uncle Fester

    Uncle Fester 1/2 ton status

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    Location:
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    1978 Chevy Suburban

    350 ci 4 barrel, SM-465, NP205, 10 bolt front w/3.73s,
    12 bolt rear w/3.73s, 33x12.50x15 ATs

    UPDATE, now has 35x12.50x15 Dunlop Radial Mud Rovers
     
    Last edited: Dec 30, 2006
  12. sandawgk5

    sandawgk5 3/4 ton status

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    I gots me a 700R4 and 208 with 4.10s and 37s. The gear is too high 3rd revs too high and OD is too low of an RPM. I will be going with 5.13s and a doubler or 3 speed stak behind a NV4500.

    Ira
     
  13. tarussell

    tarussell 1/2 ton status

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    465 tranny with a 203 range box +WMS 3.198 gear set in front of a 205 case going to 5.86's in the chunks turning 36" tall SX's .

    Tom
     
  14. RockinChevy

    RockinChevy 1/2 ton status GMOTM Winner

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    700r4/np241/4.10 gears with 33s. It's ok for the way it is now.
    I'm going for 700r4/203,205 doubler/5.13s with 37s
     
  15. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    If the truck is truly "trail only" there is no reason not to go as deep as possible..... which is 5.13s if you're running a 14BFF.....7.17 (or something like that) if you're willing to swap in a Dana rear end.

    I'm assuming you already have a D60 front since you are running 44's.
     
  16. muddybuddy

    muddybuddy 3/4 ton status

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    700r4/208 5.13s and 39.5's
     
  17. onetonbb74

    onetonbb74 1/2 ton status

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    350/700/203/205/4.10 36-12.5-15 i want 5.13/5.38's and 39.5's
     
  18. gmc4cw

    gmc4cw 1/2 ton status GMOTM Winner

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    doublers are expensive. What would I gain from a 70 rear end?

    This truck has been in overdrive only a handful of times in the last 7 years. not once this year, and only once last year when I was messing around on the road in front of Paragon. Pretty much keep the lever set to 4lo all the time.

    would 5.38's be too much? right now I have a 38:1 crawl ratio not counting converter slip. 5.38's would put it at 45:1. not much but a step in the right direction.

    If I did a doubler I would like a klune-V since you can mount anything behind it. and its lighter then a 203. my truck weighs enough already. so if I did a 205 behind that it would still be short. with 4.56 gears I would be at 75:1. same setup with 5.38's would be 89:1. not too shabby.

    I'm thinking out loud here.
     
  19. gmc4cw

    gmc4cw 1/2 ton status GMOTM Winner

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    yes its a 60/14 bolt combo. geuss 5.13 is the way to go since I don't feel like swapping axles again.
     
  20. Chevy305

    Chevy305 6 Lug 14bsf Status Premium Member GMOTM Winner

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    465/208/10b/4.10/35"s

    crawl ratio - 70.1:1 :bow:
     

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