Swapping 203 for 205 on th400
 

Ok currently my 78 K20 has no transfercase in it. My uncle took it out and installed a 2wd tailhousing on the tranny and made it a 2wd truck. What I want to do is put a transfercase back on it. The truck originally had a np203 but was thinknig about a np205 instead. Is the length of the ouput shaft different on TH400's that came equipped with np205. Just need to know if this wuold be a easy swap by just changing the adapter and tcase. Also anyone have any pics of th400 np203 combo in the truck I need to know what kind of supports I should be getting if I decide to stick with the np203.
Any info would be greatly appreciated.

Re: Swapping 203 for 205 on th400
 

[QUOTE=ncl;3205216]Ok currently my 78 K20 has no transfercase in it. My uncle took it out and installed a 2wd tailhousing on the tranny and made it a 2wd truck. What I want to do is put a transfercase back on it. The truck originally had a np203 but was thinknig about a np205 instead...........

.............Is the length of the ouput shaft different on TH400's that came equipped with np205.......................

Yes, they are the same length as the 2wd output shaft.

...............If your uncle has changed over to a 2wd, he would have had to replace the output shaft of the trans if it was originally for a 203.

Re: Swapping 203 for 205 on th400
 

Ok so I should be ok for a np205 then either way whther he swapped in a 2wd tranny or changed out put shafts. Is changing the out put shaft difficult I just dont see him doing that unless itwas quick and easy.

Okay is the output shaft compatible with the input of the np205? Also I have heard of short and long shaft 400's are all 4wd 400's short or did it just vary from application.

Re: Swapping 203 for 205 on th400
 

You will need a turbo 400 t-case....(32 spline input 205 t-case)

Re: Swapping 203 for 205 on th400
 

ok thanks for the help