40 spline NP 205 shaft?

[91.5oneowner]

I have an argument going with a Ford guy. I KNOW I saw a 40 spline shaft for an NP 205 in a 4-Wheeing magazine within the last couple of years.

I also KNOW the caption under the picture said it was from a Cummins powered Dodge. Obviously it had to be from a firds gen.

I THINK it was from a 727 equipped truck.



Can anyone back me up on this?



I don't know if there is such a thing and I tried to find the article for about 4-5 hours (I HATE being wrong!).



Thanks!

 

[pepecat]

There is a fairly rare 29 spline NP205 used in Dodge trucks behind the Getrag 5 speed. The NP205 used behind automatics are all 23 spline, even in the 1 Ton Cummins apps.

 

[Mopar_Tim]

2nd gens also use 23 and 29 spline outputs

 

[pepecat]

Yes and those have driver side drop T-cases

 

[AKimmel]

I think I remember seeing that also. I think it was a 40 spline output shaft though, not input shaft. Our trucks have a 32 spline output shaft stock on autos or manuals.

 

[Tippin Spotted Cow]

2nd gens don't have a 205 I don't believe.

 

[EMacdonald]

Heh... It's a small internet! I'm not just a Ford guy. I did quite a bit of digging myself before I backed the other guy up, and I can't find reference to a 40 spline 205 anywhere, even the LowMax aftermarket unit that's touted to be the strongest 205 ever is only 32 spline throughout.
The article you are thinking of was in Petersen's 4wheel and Off Road, I don't remember exactly when it was published, but, I'm sure I have it here somewhere, but, the article can be found here:
Building a Bulletproof NP205 Transfer Case - 4-Wheel and Off-Road Magazine
/index.html

And, the picture you are thinking of with the Dodge shaft dwarfing the rest is this one:
#ad

The pictured shaft is the 29 spline Cummins/Getrag one.
The rest of the shafts in that picture other than the divorced one(has the yoke in front of it) are GM stuff.
The GM 32 spline and Ford 31 spline inputs which are arguably stronger are female, and while the true difference in strength is probably not very much at all, not having the coupling sleeve is an advantage simply due to having one less splined coupling. Oddly enough, the PO had to replace the one in my 89 after it stripped out.
Other than the input shafts, and the obvious case differences, the Ford and Dodge/Cummins 205's are identical internally, same gears. same output shafts etc.
GM being GM had multiple versions of the 205's that aren't up to the same standards of strength as the other two... They even tried a synchronized version for trucks with auto hubs...

 

[Tippin Spotted Cow]

I believe all 205s are sychro'd...

 

[EMacdonald]

The synchronized version was designed to spin up the front driveline to engage the auto hubs on the fly. Try putting yours into 4 high going down the road with the hubs unlocked, it will grind, the Chevy synchronized version wont. Of course, it had a goofy half shift fork for the front output and the whole shebang is weaker by design... .

 

[91.5oneowner]

Heh... It's a small internet! I'm not just a Ford guy. I did quite a bit of digging myself before I backed the other guy up, and I can't find reference to a 40 spline 205 anywhere, even the LowMax aftermarket unit that's touted to be the strongest 205 ever is only 32 spline throughout.

The article you are thinking of was in Petersen's 4wheel and Off Road, I don't remember exactly when it was published, but, I'm sure I have it here somewhere, but, the article can be found here:

Building a Bulletproof NP205 Transfer Case - 4-Wheel and Off-Road Magazine

/index.html



And, the picture you are thinking of with the Dodge shaft dwarfing the rest is this one:

#ad


The pictured shaft is the 29 spline Cummins/Getrag one.

The rest of the shafts in that picture other than the divorced one(has the yoke in front of it) are GM stuff.

The GM 32 spline and Ford 31 spline inputs which are arguably stronger are female, and while the true difference in strength is probably not very much at all, not having the coupling sleeve is an advantage simply due to having one less splined coupling. Oddly enough, the PO had to replace the one in my 89 after it stripped out.

Other than the input shafts, and the obvious case differences, the Ford and Dodge/Cummins 205's are identical internally, same gears. same output shafts etc.

GM being GM had multiple versions of the 205's that aren't up to the same standards of strength as the other two... They even tried a synchronized version for trucks with auto hubs...

Thanks for the info.

I looked back through my magazines for about 3-years and I found the article you're referencing but that's not the article I saw it in.



I still have some more mags. around here somewhere I need to look through.



THANKS guys!





The MAIN reson I want to find it so bad is that I KNOW I saw it and I hate when people just throw out info. they don't know is true.

I don't want to be one of those guys!

The other guy's not being a butt about it I just want to show it's true, at least that the magazine printed it anyway and I'm not just making it up.