NP 203 or NP208??

[WY_75]

How do you positively identify a NP 203 from a 208?

I have access to a free TH350 and its Transfer case still in the truck(79-80).

If its a 203, I may be interested in getting to use the range box for a doubler. If its a 208........ is it worth getting?

I currently have a SM465 and NP 205 now, but a 203/205 doubler sounds cool.

Thanks in advance......

 

[pauly383]

The 203 is kinda long , heavy , cast iron case , side shifters , and a fixed rear yoke .

The 208 is aluminum and has a slip shaft for the rear driveshaft and a single shifter spot .

You may find a 205 and think its a 203 , but the 205 is short , and has two shift rods on the front facing the engine joined with a bar with a single center hole .

 

[WY_75]

The 203 is kinda long , heavy , cast iron case , side shifters , and a fixed rear yoke .

The 208 is aluminum and has a slip shaft for the rear driveshaft and a single shifter spot .

You may find a 205 and think its a 203 , but the 205 is short , and has two shift rods on the front facing the engine joined with a bar with a single center hole .

Thanks man. The info is much appreciated........and quick!!

 

[79k20350]

its not a 208 if its from a 79-80 and original. the 205 you have wont work with a doubler without modification or until NWF comes out with there updated doubler. Also to go 465/203/205 you either need a 32 spline spline 203 (which would be a 27 spline on 350)+ 32 spline 465,205/465 adapter, 205/465 adapter (round 6 bolt) and you still need to do something with your 205. OR you need 10 spilne 205, 465/203 adapter, 10 spline 203, and still need to do something with your adapter... if that doesnt clear ewverything up just hit the seacrh button...

 

[pauly383]

I forgot to add that all 1980 model year were 205's with a slip yoke rear .

 

[pauly383]

I'm going to do my doubler with a th350/203 to a chevy 10 spline with a ford 31 shaft , custom spacer and proper bearing . Marv made it so I don't have to bore the case . Saving for the ORD kit as I type

 

[79k20350]

i forgot about that, you can use a 31 spline ford shaft in a 10 spline case, dont you just love marv? he definetly opened up some new doors for us. i have a 10 spline 205 in the garage that may just find its way home into a doubler...