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crawl ratio ?

Discussion in 'The Garage' started by oatsk5, Dec 21, 2005.

  1. oatsk5

    oatsk5 1/2 ton status Premium Member GMOTM Winner

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    I searched but i dint read all of them but my question is is 37.95 a decent ratio i cant recall if its acceptable or not my gears are 3.06,2.72,4.56
     
  2. 74757685k5

    74757685k5 1/2 ton status

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    allright for 35s-38s in my opinion.motor could be in the consideration. I have 6.69,2.62,4.10 with 33s It crawls good.71.86
     
  3. beastofablaze

    beastofablaze 1/2 ton status

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    I have a 700r4, and an np208... can somebody refresh my memorie on the gear ratios? Or in other words wuts my crawl ratio with 4.88's?
     
  4. muddybuddy

    muddybuddy 3/4 ton status

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    ive got 3.06,2.61,5.13 (40.97 crawl) and im gona run 40's

    beast...700r4 = 3.06, np208 = 2.61 ur crawl is 38.97
     
  5. beastofablaze

    beastofablaze 1/2 ton status

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    thanks bro
     
  6. PsychoticDeadGuy

    PsychoticDeadGuy 1/2 ton status

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    i will be running 65:1 with 38s. i think thats a decent crawl ratio.
     
  7. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    I thought with an auto tranny you doubled the ratio because of the converter?
     
  8. George_Pimpdaddy

    George_Pimpdaddy 1/2 ton status

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    whats my ratio like i have a 89 blazer with a 700r4 and np241 and stock 10 bolts so probaly 3.06 i guess. and is there a website with this calculater around? thanks
     
  9. txfiremank5

    txfiremank5 1/2 ton status

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    http://www.4lo.com/calc/gearratio.htm
     
  10. dremu

    dremu Officious Thread Derailer Premium Member

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    Depends on if you want Timmay to scream ... I know he's joined the band now, but that used to make him froth at the mouth =))

    I've also heard that, but it depends on the motor speed 'cuz the coupling of the torque converter changes with RPM, etc etc.

    -- A
     
  11. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

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    Hehe...Mine is 134:1.

    Neener neener!:haha:
     
  12. FRIZZLEFRY

    FRIZZLEFRY 1/2 ton status

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    134:1 is gay :surepal:

    153:1 is where its at stupid :D
     
  13. ntsqd

    ntsqd 1/2 ton status

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    Oh! Make him scream! Make him scream!

    Torque converters have btwn a 2:1 and a 2.6:1 torque multiplier when UNlocked (unstalled) and I would imagine that the actual ratio at any given time depends on how close to stalled the converter is. When stalled they are 1:1
     
  14. Hossbaby50

    Hossbaby50 3/4 ton status

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    It all depends on the setup especially auto or manual. You are running an auto so your crawl ratio is just fine. I am running 3.06, 2.61, 4.56 in my truck and I crawled the hell out of it in AZ and was never hurting for deeper gears offroad. I do have a low stall converter(1000-1200rpm) though and a torquie TPI 350. I had that converter installed especially for rockcrawling.

    With my setup I never had a "need" for more gear. Sometimes more gear would have been nice but I never needed more gear. If I am in low range & 1st gear and the motor is doing 1100 rpm I am either climbing my obstical or spinning all 4 tires trying to climb the obsticle.

    In alot of situations I almost wish I had less crawl ratio because that much gear with the fast throttle response and lowend torque of my motor was hard to control. I have to pay attention when I am crawling so that I finess the gas pedal because if I step on it the truck jumps hard.

    Harley
     
  15. TruckNutzDude

    TruckNutzDude 1/2 ton status

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    I've got 68.88 with 44's... actually it WILL be that when I get off my butt and work some OT to get the gears installed.

    Currently it's 50.08 and it's really not that bad to be honest.
     
  16. BranndonC

    BranndonC 3/4 ton status

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    mines 50.89:1 before doubling it, then add about 525 Ft/lbs of torque and 37 inch tires.... :eek1::laugh:
     
  17. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

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    If only I could figure out a way to fit 5.86 gears in my 14b....:rolleyes::haha::D
     
  18. tarussell

    tarussell 1/2 ton status

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    153:1 is impressive but 241:1 is a tad more impressive........

    Merry Christmas , Tom
     
  19. Silver84k5

    Silver84k5 1/2 ton status

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    holy ****.. i hope the TC means i have to multiply by 2. cuz damn

    with a th350 np205 and 5:13s... i have an anemic 25.34:1
     
  20. jaysonsk5

    jaysonsk5 1/2 ton status

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    just did mine with 465,208 and 5.13. it was 87.7 is that good?
    i can let the clutch out in 1st and low, it will dig without stalling.
    oh yeah i run a mild BBC and 44 boggers
     

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