Syncro NP205

[LEYLAND]

anyone got any information or advice on this transfer case?

are they any good or get rid of it?

thanks

 

[David Hall]

The NP205 transfer case is said to be the strongest of the three chevy used. The case is cast iron and very strong, downside is it also heavy.

 

[LEYLAND]

You are correct, however GM used syncro gears in some NP205's (82-85) but discontinued them as they shifted poorly & were weaker than normal 205's. Basically I was looking to see if anyone had changed out the gears for regular NON syncro.... I found the info I was looking for on another website.

This can be done but you need to find a donor case & replace:
1. the front output drive shaft/gear (along with rear aluminum cover to match bearings
2. idler shaft/gear
3. 4wd (front) shift fork

most people look for a ford or dodge NP205 for the parts becuase they are less in demand (cheaper) than GM parts & they had 32 spline front drive which is claimed to be stonger than GM's 30 spline.

I'm in the middle of the swap right now using a Dodge NP205 donor.

 

[David Hall]

Nice homework Leyland, you get an A!!!
Post instructions and pictures for the rest of the class to see.

 

[2tons of fun]

they are not "weaker". they use a goofy sheet metal shifter ring for the front output , a different shifter fork assembly and the idler/intermediate gear is slightly thinner on the forward portion to make room for the shifter ring system but the guts are just as beefy and bomb proof as a regular 205.

the tin shifter ring, idler and fork will not interchange if you wanted to swap in a 32spl front.

 

[The Carpenter]

Yes please if you can, pics would be way cool. Thanks.