The transfer case didn't effect the output of the transmission unless told to do so. The high ratio on the t/c it's putting out what the transmission would put out without it. Only change your going to get its if you put the t/c in lo range.
As much as you want a lot of this to be a bolt on, bolt up thing with keeping as much stock parts you can, it's not going to happen without a lot of $$$$ or at all.
I'm running 3.73 gears with no problems. But I am thinking of changing to 3.08s one day because off my transmission choice, np435.
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