Can I put a np203 in my 84’ K10 that originally had the 208?

[hayes1998]

I’m restoring my first truck, a 1984 Chevy Custom Deluxe 1/2 ton 4wd. Was a complete roller so I was looking at getting a transmission and transfer case. I believe this truck originally had a np208. I have found a th350 w/ a np203 for a relatively fair price. I was just wondering if this would even work for my truck, I’m aware that I might have to put the conversion kit and lockers but was just curious if this application would even work. Or if I just need to find a 208. Thank you

 

[GTX63]

Yes, a 203 will work. The last three 80s model squarebodies, an 83, and two 85s I have drug home had 203s in them, lol. I don't know why, but that is just what got swapped into them.
Grab the matching driveshafts if you can.

 

[geardaddy]

1984 k10 would have come with a np208. in 84 , only the 1 ton had a np205

 

[Old Guy Bill]

Going to a 203 will mean driveshaft changes.. and maybe adding a “Part time” Kit to not be full time FWD.
I wouldn’t even consider it.. I ditched the 203 to go to a 208 in the truck I’m building.
You can’t give a 203 away in my area, 208s are going for $100-200 depending on the input shaft spline count.

 

[hayes1998]

Going to a 203 will mean driveshaft changes.. and maybe adding a “Part time” Kit to not be full time FWD.
I wouldn’t even consider it.. I ditched the 203 to go to a 208 in the truck I’m building.
You can’t give a 203 away in my area, 208s are going for $100-200 depending on the input shaft spline count.

I’ve been trying to find a 208 in my area to no avail