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NP203 ratios

Discussion in 'The Garage' started by sickquad, Sep 19, 2004.

  1. sickquad

    sickquad 1/2 ton status

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    Anybody know what the ratios in hi and lo of a NP203 are. I am assuming hi is 1:1 and I think lo is around 2.5:1 but I cannot remember. I'm trying to figure out what gears I should be running.

    By the way, yes I did a search.

    -Chris
     
  2. jac6695

    jac6695 1/2 ton status

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    Low is 2.01:1. NP 205 is 1.96:1. /forums/images/graemlins/thumb.gif
     
  3. Muddytazz

    Muddytazz 1 ton status

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    I think lo is just 2:1, you are right on the 1:1 /forums/images/graemlins/thumb.gif
     
  4. sickquad

    sickquad 1/2 ton status

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    Thanks guys.

    -Chris
     
  5. TruckNutzDude

    TruckNutzDude 1/2 ton status

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    Are you sure you have a 203 case? I just read your profile and it says you have a 700R4 and 10 bolts front and rear. If I'm not mistaken, a rear 10 bolt and 700R4 weren't an option in any blazer with a 203. Unless of course this isn't that blazer or maybe you have a 208 case? I'm just wondering because I've never seen anybody use an overdrive tranny with an uber-heavy 203 full time transfer case before. /forums/images/graemlins/screwy.gif

    If you have a 208 it would be an aluminum case with a 2.62:1 low range and 1:1 hi range. It would also be part time so you would have hubs up front (possibly the auto-locking ones)
     

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