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Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Chewy, Sep 12, 2000.
I need to know the gear ratios for my NP231C Transfer Case. Please let me know. Thanks.
are you sure you have a 231C? What year truck is it?
Just trying to get a feel.
high range (2-hi and 4-hi) is 1:1
low range (4-lo) is 2.72:1
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