TF727/NP203 and NP205

[Will Morris]

Ok guys, so I need a heavy duty transfer case for my Jeep. I've decided that I would like to use a an NP203 or NP205 or better yet a doubler. However, I've found a reasonably priced TF727/NP203 combo from a Dodge, and know where I can get an NP205 for a TF727 from a Dodge. Does anyone know if I can bolt on the NP205 in place of the NP203 while I'm saving up for the doubler? Did they use the same adapter or different adapter and output? I know that I'll then have to get an AMC TF727 to match my AMC 360, but I'm sure I can find one.

Thanks,
Will

[Crazy_Jeepman]

I know the GM version use different adaptors and trans output shafts between the 203 and 205. I have the GM NP205 and TH400 for my rig.

[gsmikie]

you could also get a divorced 205

[FSJeeper]

There is one version of the Dodge NP203 with output shaft and adapter. There are at least 3 versions of the Dodge NP205 and probably more.

For the Dodge NP205 to bolt onto the 727 with the NP203, it would have to be a pre 79 model.

But, you can bolt any married NP205 to the Dodge NP203 with the doubler. 99.9% you will not find a 32 spline input version of the NP205 so you will have to change the input anyway to make it work.

With this setup, you will have a bulletproof drivetrain capabable of doing anything you want and doubling the number of gears you have which will be 12. Not bad at all.

[TexasJ10]

Did all 727's come with 23 spline outputs?

[FSJeeper]

Originally posted by TexasJ10:
Did all 727's come with 23 spline outputs?Nope, the ones I know are 23, 29, and 32 but I am sure there are earlier model spline counts. I am almost positive the Dodge NP203 did not have 23 splines but could be wrong. I know in 79 they went to 23 splines but I think they had something else before.

[TexasJ10]

Now you have me thinking again. I put a 32 spline input into the ford 205 i got from you so I could bolt it up to the NV4500. With a 32 spline output on the 727, the 205 might bolt up to the exisiting 727 adapter since the ford 205 had the new process round bolt pattern. I wonder what the stick out length is on the 32 spline output compared to the 23 spline.