Hey all,I have a 86 GMC Jimmy with a np208 transfer case,what's the difference between the 203 205 & 208? I might be able to get a 203,I think mines ready to spit the chain.Would I be able to switch???? I'm new so be gentle. I'll post more about me after the holidays.Thanks and Merry Christmas.......

 

1. NP203, cast iron, full time, chain drive, with 1.96 to 1 low range
2. NP205, cast iron, part time, gear drive, sturdy, 2 to 1 low range
3. NP208, aluminum, part time, chain drive, not as tough but shows up in some tough trucks.

If you were looking to switch and keep 2HI, I would get the NP205. You can do a 2wd conversion to the NP203, but this can cause other problems (lack of lubrication in the top part of the case).

 

Thank you sir.That's what I wanted to know.I guy close to me has a 203 for sale for $150,thought that was a good price.But,if it won't work,it's not a good price.Merry Christmas to all.....