Connecting NV4500 to Divorced Transfer Case

Bruce A. Frank

Bruce A. Frank

Member
I do not know how the output of the nv4500 is configured, whether it terminates with a u-joint yoke or it designed to bolt directly to a tc.

I assume that the trans used in a 2wd vehicle would have a yoke output that might just allow a u-joint to be the connection between the trans and my divorced tc. Any first hand knowledge?
 
Since my intermediate step is to first install the trans behind the bd240 using your input shaft adapter and you previous suggested the nv4500 from a dodge, I am going to assume that the dodge 2wd version also out-puts with a yoke, correct?(everyone's web site pictures seem to show the bolt-to-the-transfer case versions)

I believe you also said, (been a long time and can't find my notes) that there were specific year dodges that you recommended when using the input adapter shaft.

If I am remembering it incorrectly, let me know.

Clearly the trans for a 2wd would be the selection that I would expect to output with a u-joint yoke, but the impression I have gotten is that there are bolt on parts to the trans that May need to be purchased separately for the 2wd.

Thanks for you response!
 
I would think you'd either have a fixed yoke or slip yoke, but there could be a 4 bolt flange too. I do know that the front of the 90's dodge xfer case is flanged.
 
If you buy the transmission from us we can have it made any which way you need. Currently brand new nv4500's are available. Cost for one with our input shaft and adapter already installed is $2595 plus freight. If you're going used you can go with a 1996 or later GM transmission and then install our adapter kit. The reason we normally recommend the dodge version is most are using it with a mated transfer case which then makes installing a Jeep Dana 300 transfer case for instance much easier much easier than going with a GM version.

I will say though even with the 2wd version and a divorced transfer case you still May need to move your transfer case rearward to give enough room for a driveshaft in between. We are currently working on a 1968 c series truck and going with a nv4500 and with it we were going to need to move the transfer case back but instead we talked the customer into going with a mated transfer case to overall simplify and modernize things.

Pics below are of a new transmission that I just ordered two weeks ago and installed in my Travelall as my current transmission was worn out(it was used when I installed it).

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In the pictures I have looked at on high gear's web site, I see that the tail housing on the two wheel drive units is very long, likely requiring the tc to be set back as much as a foot or more.

Fabing new drive shafts is not a problem, but there May be a problem with shaft angle to the rear axle.

I like the divorced tc. I also see that it might be possible to fabricate a coupling system to bolt my np201 to the 4wd nv4500. Lot of speculation, but I am also trying not to reinvent the wheel with this project.

Maybe sometime in the next couple of months I need to drive over and talk face to face about whether to spend time or money.
 
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I don't see how you could put a np201 mated behind a nv4500 without some very expensive machine work to make a custom adapter. For a divorced set up this is the transmission output you would want to use.

gm_2wd_11.jpg
 
ihpartsjeff said:
I don't see how you could put a np201 mated behind a nv4500 without some very expensive machine work to make a custom adapter. For a divorced set up this is the transmission output you would want to use.

gm_2wd_11.jpg
Click to expand...

Jeff, thank you for that picture. That looks do-able!

My other thought would be to obtain a mated style NP205 to use in place of my np201.
 
Finding a mated style NP205 is easy enough. But unfortunately finding the front adapter that goes on the transfer case side of the NP205 is extremely difficult. If my memory is correct only dodge used the mated NP205 for just a couple of years. The current project that we are working on, a 68' pickup, is getting a np241 installed on the back of the nv4500. It's going to be easier to find than the NP205, but you have to make sure you find a passenger side drop version of one as most were driver side drop.
 
Yes, my search so far shows no mated np205s with the passenger side drop, so they do appear rare.

I am not familiar with the np241. Is it gear drive of chain drive? Would it stand up to a later diesel installation? I liked the idea of the un-bustable NP205 because there seemed to be a lot of inexpensive ones...which makes little difference if the needed model is unavailable.
 
An np241 is chain drive. It was mounted in full size trucks so it should be fine behind a diesel but I honestly don't know enough about them to give you a definitive answer on strength.
 
Chevy's use whats called a "figure 8" mounting pattern ans thus a different mounting adapter. Again it's the adapter on the dodge version of of the NP205 that is hard to find.
 
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