203 to 205

[79blzrfan]

I have the 203 fulltime case in my 79 K5 how much work is it to go to the 205? Will I need new driveshafts and a will it mount to the turbo 350 trans with out an adapter?

Scott

 

[ironnut]

I did the swap on my 76'. You need to have the th350-np205 adapter, because the adapter currently on your rig is for a th350-np203. The shifter linkage is also different. It's a realtively easy swap, took me and a buddy a long afternoon. Try to get a tranny jack or something similar to make your life a whole lot easier. I rented one from a rental store. You will need to have your driveshafts modified.

 

[OrangeCrushK10]

I did this exact swap on my wife's '79 K5.

You will need:

*NP205 Transfer Case
*NP205/TH350 adapter
*The coupler sleeve thing that connects the output shaft of the TH350 to the input shaft of the NP205 (I forgot this part and had to run back to the junkyard to get it!)
*Extend the rear driveshaft 5 1/2" (I think, better measure to make sure)
*Buy and install a SYE kit for the NP205 (what I did) OR buy a slip yoke for your driveshaft.

I think that was about it.

 

[Resurrection_Joe]

*Buy and install a SYE kit for the NP205 (what I did) OR buy a slip yoke for your driveshaft.

From what I can remember, only 1980 NP205's are slip yoke

 

[Resurrection_Joe]

Also, figure out how much work and money it is it is to switch, THEN figure out how much work and money it is it is to make a doubler

 

[NorthWestFab]

From what I can remember, only 1980 NP205's are slip yoke

1980 and newer NP205's are all slipyoke, excluding those from crewcab trucks, which were fixed.
1980 was the last year for the NP205 in all trucks except the K30's.

 

[Resurrection_Joe]

Shawn Spickler has betayed me!

From his driveshaft article -

[size=-1]At the same time, the 205 was converted into a fixed yoke. 1980 was the only year that the 205 came with a slip yoke and we just happen to have a transfer case from a 1980... Lucky us.[/size]

 

[79blzrfan]

Thanks for the help. I'll look at all the costs and make my decision before I spend the money on the part time kit for the 203.Scott