Divorced 205 Qs

[gmwoody]

i just bought a '70 3/4 ton Chev 4x4 with a th350-np205 combo. the th350 is on it's way out and i would love to put a 2wd nv4500 in and divorce the 205. anyone know where i can find parts for this build and also anything i'm missing????
i know i'll need:
front yoke conversion for the 205,
new trans mount (need to move it??),
intermidiate shaft (where to get it?),
i know there has to be more....
can i make the int shaft the right legnth and not have to adjust DS legnths?
thanks
Bryan

[milled]

My divorced t221 is mounted twards the rear of the cab. I'm also having trouble finding parts to divorce a np205. Some guys use ford highboy np205 parts.

[hdflstf]

offroaddesign.com?
advanceadapters.com?

[OLDCHEV4X4]

Go to the Pirate4x4 web site. There is a large thread on the 205 in the chevy section.

[BIG HEAD]

I used a np200 which is a great case. They are rated at 1.5 ton. They are very plentiful in the millitary surplus yards they come in the 60's kiser jeeps. I took mine apart and it looked new inside. No wear at all on the gears. Just resealed it. It is a floater behind a 2wd th400 tranny, with a short mid shaft.

[Yukon Jack]

Got any pics of that setup Big Head?

[1-tonmudder]

The 2wd 4500 alone will be close to the same lenth of the 350/205 combo.Chevy didnt use a DM 205 so you will either need a Int or Dodge 205(the Ford's are DS drop).I would recommend the INT case since most of the Dodges take some small/funky U-joints

I dont really understand what kind of conversion your talkin about for the front yoke(unless your shaft has the square flange yoke).The DM 205's take a reg 1310,1330,or 1350 joint.


Trans mount will need to be moved,you might get lucky and find some shafts that are close and have em cut down,but most likely youll have to get at least a jack shaft(interm shaft).Might get away with puttin the front shaft in the back and vice versa.

I have a DM 205 but shippin would probably be killer.

[earl87gta]

I’ve done this or should I say I almost did then started over to make some changes. The trouble with the front yoke is The DM 205's take a reg 1310,1330,or 1350 joint and the nv4500 takes a 1410. I don’t know if any one makes a 1410 yoke for the divorced 205 but its no big deal have the small drive shaft made wit a 1410 on one end. I did this to the burb but the burb is torn back apart so I cant get pics of any thing but parts for you. But Ill be glad to tell you how I did it.

First the size of this combo is huge. The nv4500 I used came out of a chassis truck with a dump box on it so it has the parking brake on the trans. it was 36in long. The NP205 was from a dodge truck and was 16in long. So you have to have a LWB for it to work unless you don’t have much of a lift and don’t need to worry about steep drive shaft angles for the rear.

I was trying to make it to ware I could have equal sized drive shafts front and rear but here is the trouble with that. Wheel base is 127 so half is going to be 63.5in so now minus 36 for the trans and 8 for the ½ of the np205 - 20 in for the engine and you are ½ in longer then ½ and we haven’t even considered the connecting drive shaft for trans too 205 yet. The dodge original dodge shaft was 13in long give or take the 4in it could slide but you need it to be able to slide I would say at least 2 in. So the smallest your going to get that shaft is around 10 to 12in

Now this may not be a problem for you if your using the standard short tail NV4500 with out parking break option the normal NV4500 is 30in long and you can do other things like move the front axle forward and the rear axle back on to 2 in to help out you can also go to electric fans and move the engine forward and have just enough room to do it. But I couldn’t do it but now that its all a part again IM going to give it a try Im trying to find out now if I can use the parking break on a short tail trans. If not Ill ether have to give up the quest for equal drive lines or ditch the parking break and go to elderado disks in the rear or back to drums.

A few other things for you the divorced 205 does not mount from the bottom of the transfer case it hangs from the cross member so if you try to use a stock dodge cross member your going to have to do a body lift. Also the divorced 205 had a long steel rod that went to from the floor shifter to the transfer case if you have the dodge shifter that’s no a problem reuse it but if not like me you will have to make something. I was going to make a cable shifter you can buy them there around $350 or you can make one for ½ that your self using a B&M trans cable and a stock transfer case shifter. Im making my own I bought the cable from summit racing for $100 and got a standard 205 shifter for $25 from a board member.

Here are a few more measurements for you. That I had written down so I hope there right. I had a SM465 Rockwell transfer case combo in my burb. It was 33in long together the shaft from trans to carrier barring was 19in from engine to carrier baring was 53 in and from engine to rear drive shaft was 62in on the original set up sorry I didn’t have the original drive shaft lengths written down.
When I started this the engine was a 283 I had a 6in suspension lift with springs in the front blocks in rear. My front was a drum closed knuckle d44 and an Eaton rear.
Now when it gets back together it will have 8in springs on the front with a 1in zero rate setting the front axle 1in forward and the rear will be a shackle flip and custom 6in springs with the rear set to center of rear wheel well. The rear axle is still an Eaton but it has a D60 up front now. I was in the process of putting a 6.5 diesel in it but now since I don’t see the burb back on the road any time soon I may hold off and put a 6bt in it or stay gas and go to propane.

Here are some pics I hope they help you out. The first ttrans is my long 36in one with brake the 2nd is the standard 30in one the next pic is my transfer case from the top you can see how it bolts in and the original shifter shaft is still on it in this pic. The last pic is the original shaft connecting the trans and transfer case you can see it looks like dodge used the same parts as they made the front drive shaft with cut down to fit.
I hope this helped you out and didn’t confuse the crap out of you.

[1969 GMC]

Originally Posted by 1-tonmudder

I dont really understand what kind of conversion your talkin about for the front yoke(unless your shaft has the square flange yoke).The DM 205's take a reg 1310,1330,or 1350 joint.

I *think* he is talking about making the married case INTO a divorced case. I think. If that is the case (bad pun), I wouldn't advise it. Divorced NP205's have 32 spline front outputs so they can use the same yoke on the front and rear driveshaft, and also the input.

Your vintage NP205 from behind a TH350 will have a 10 spline front output, not as strong. Not to mention you'd have to figure something out to hold a seal on the shaft. It would be much easier to use a divorced passenger side drop 205 as stated above.

Right now my truck has no drivetrain (project infinity :sadface: ) but I am going to swap in a NP542GL 5 speed transmission from a chevy bus and a NP201 divorced case out of an International. I am only going with this older case because it was free and has a PTO mounted on it.

[earl87gta]

I wasnt even thinking about him posably wanting to use the 205 that he has I guess it becuse if it was mine I would sell the trans and transfer case togehter or trade of s divorced one.

[Dieselwrencher]

Just an FYI. In 1989-1993 in the Dodge Cummins 5 speed Getrag transmission trucks, they had a passenger side drop NP205. These will go on the NV4500's if you have the correct output shaft spline count on your 4x4 NV4500. I think they are a 27 but i could be wrong. This is what is in my brother's 1988 V30 CC LB Cummins powered 4x4. This will eliminate the need for a divorced case if you come up with a 4x4 NV4500.

[1-tonmudder]

The Dodge getrag 205's are 29 spline and harrrrrrd to find.The 27 spline 205's are for the Chevy 205's that are behind a TH350.That would be easiest way to do it though.

[Dieselwrencher]

Originally Posted by 1-tonmudder

The Dodge getrag 205's are 29 spline and harrrrrrd to find.The 27 spline 205's are for the Chevy 205's that are behind a TH350.That would be easiest way to do it though.

Thanks 1 ton mudder. I couldn't remember if they were 27 or 29. I know the 29 spline is what the 1 tons have in the newer dodge trucks with a 241dhd.

[1tonswb]

A pic of my truck to maybe give you a idea of what you need.

[padresag]

Originally Posted by milled

My divorced t221 is mounted twards the rear of the cab. I'm also having trouble finding parts to divorce a np205. Some guys use ford highboy np205 parts.

IHC and dodge both used r/s(passenger side) independent 205's the dodge uses oddball ujoint yokes and you have to change those. Everything that is in a ford case should go into a r/s case. mine came out of a 72 scout
ron
sorry i didn't get far enough down the thread to see this info already there
I did use the scout mounting combined with my old t221 stuff and was not much of a problem to install and has been in there since 92. no body lift and it is in a 65 1/2t 4 x 4 panel. Basically the same frame as a 69

[cobinder]

If you don't have the NV4500 already why don't you buy a 4x4 one? I got mine locally (Craigslist) for $1000 and had to buy a AA adaptor and she bolted to my 205 nicely and very clean.

[gmwoody]

better idea to just get a NV4500 w/ tcase (243? ) combo? thanks for all the replys.

[1969 GMC]

Originally Posted by gmwoody

better idea to just get a NV4500 w/ tcase (243? ) combo? thanks for all the replys.

I believe the 243 is the electric shift model, and you need to steer clear of those. You want the 241, which is manual shift.

The 241 will be more than enough for your 4x4 needs unless you know the drivetrain will be taking a severe beating (read: trauma to the driveshafts which can break the 241's case). The 241 also has a steeper low range than the 205.

If you are going to be flogging the snot out of it like it owes you money, though, you'd probably be ahead in the long run to use the 205's bulletproof cast iron case.

[ryanroo]

my method is to use a GM 4500 and a later model round pattern 205. a simple 65 dollar part from AA and you are hooked together. or if you want to tear the case down, you can install the short 32 spl. input from an older th400 205 and the newer case will bolt up without any adapters and only a little modification to the tailhousing of the NV4500

this is the set up i am using in my jeep truck. i used the AA spacer
ryan

[Ironman97459]

You can turn any 205 into a divorced 205. Just get a input shaft and bearing retainer from a divorced unit and mount to your standard case.

[padresag]

Originally Posted by Ironman97459

You can turn any 205 into a divorced 205. Just get a input shaft and bearing retainer from a divorced unit and mount to your standard case.

why not just use the 205 that the input shaft and the brg retainer are already on
ron

[Ironman97459]

Originally Posted by padresag

why not just use the 205 that the input shaft and the brg retainer are already on
ron

Well sometimes it's easier to just find an input shaft or just ship a shaft instead of a whole transfer case. In my case I needed a passenger drop case and had access to a ford unit so I just swapped the parts.

[gmwoody]

Originally Posted by ryanroo

my method is to use a GM 4500 and a later model round pattern 205. a simple 65 dollar part from AA and you are hooked together. or if you want to tear the case down, you can install the short 32 spl. input from an older th400 205 and the newer case will bolt up without any adapters and only a little modification to the tailhousing of the NV4500

this is the set up i am using in my jeep truck. i used the AA spacer
ryan

got a link or what exactly the part is called for that 4500/205 adapter? And was the 4500 you got a 2wd or 4x4 versoin?

[ryanroo]

not sure what the PN is, but if you call advance adapters and tell them you want to adapt a round pattern 205 to a gm NV4500 they will know exactly what it is.

i used a 94 k2500 4x4 transmission

[K30cummins]

im fixn to install a dv205 in my k30 cummins swap let you know how it goes