nv5600 and np205?

[jayhawktrailers.com]

I have a 12v that I want to put into my 74 IH crewcab. has anyone tried to put a nv 5600 into a 1st gen. Can you make a 5600 work with the np 205. I have a 205 out of a 1990. My IH truck also has a passenger front differential like the 1st gen. Any help is appreciated

 

[john krmpotic]

The 5600 will bolt up without any problem providing the 205 is from a getrag, if it is from a 727 the coupling is not the same. Hope this helps. John

 

[TTennyson]

the nv 5600 has a 29 spline shaft, most 1st gen 205s have a 23 slpine shaft. quad4x4.com sales the shafts needed to convert the 205 to 29 spline. go there and do some reading up on the conversion

 

[Paychk]

Here is a search on the term "5600"



https://www.turbodieselregister.com/forums/search.php?searchid=529467&pp=25&page=3



and here is a good post on the a 5600 install (without the 205)



https://www.turbodieselregister.com/forums/showthread.php?t=90516&highlight=5600

 

[jayhawktrailers.com]

thanks guys that really does help my 205 is from a 727. i will read up on that tomorrow. the coupling that connects the splines is different so I can just get a coupling ? If so does anyone have a part number

 

[TTennyson]

you have to have the 205 input shaft changed over to 29 spline to. to do that you have to get it machined becuase the 29 spl. has bigger bearings

 

[john krmpotic]

I replaced my Getrag-205 combo in my 89 with a 5600 from Blumenthals and the trans bolted directly to the 205 that came in the 89 truck. The only thing I had to do was remove the rear seal in the trans. Now the area between the trans. and transfer case is a wet sump rather than dry. John.

 

[jayhawktrailers.com]

Thanks John looks like that will be the setup for me.

 

[cerberusiam]

Getrag has 29 splines, autos have 23 splines. The conversion on an early auto is not a direct bolt up. In addtion there are issues with the acutator rod for the slave cylinder that can be a pain.