Quote:
Originally Posted by stingray_
My truck mostly seems like an unmolested 1970 GMC truck. It has a 350, with a newer TH350 transmission. I am trying to figure out what transfer case it has. I remember it was a heavy cast iron one, and I'm sure that is still the original. I would like to convert the truck to manual tranny, and I like the idea of having a granny gear. I would also like to change the axles to 3/4 ton since my GMC is only a 1/2 ton. 
My thinking is to find a 3/4 ton Chevy truck with 4X4 manual and take all the components to upgrade my '70 GMC. I m just looking for the correct year that would give me the best combo. Of course I would also like to lift it during the process of changing the axles.
What should my transfer case be stock i cant remember if its NP203 or NP205. I know that is still OG.
Thank you...for your response  |
you have got the right idea...get any '72 or newer chevy/gmc K20/2500 with the 4 speed and swap it all out.
and yes, your current t-case is the NP205.