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73-87 Chevy _ GMC Trucks => 4 Wheel Drives => Topic started by: farmallgray on February 04, 2009, 02:49:13 pm

Title: Transfer case ratios
Post by: farmallgray on February 04, 2009, 02:49:13 pm

What are the low range ratios on the various t-cases in 73-87 trucks?
Specifically the 203 vs 205. I vaguely remember hearing somewhere that the 203 is lower than the 205 and want to confirm.

Title: Re: Transfer case ratios
Post by: Captkaos on February 04, 2009, 03:44:12 pm

Confirmed, it is lower.
In the order of low to high....
NP208 (2.61:1 Low Range)
NP203 (2.01:1 Low Range)
NP205 (1.96:1 Low Range)

If you got a 205 and a 203, combine them and make a 4:1
http://www.offroaddesign.com/catalog/doubler.htm