73 Powerwagon nv4500/205 Twin Stick Swap Pics - Pirate4x4.Com : 4x4 and Off-Road Forum
 
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Old 10-25-2010, 05:23 PM   #1 (permalink)
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73 Powerwagon nv4500/205 Twin Stick Swap Pics

Just got the old bat back on the road. Pulled the 727 (short tailshaft/fixed yolk) and divorced 205 and swapped in an NV4500 and married NP205 (both rebuilt). NV4500/205 were from a 94 diesel and upgraded to solve the typical 5th gear issues and I converted the 205 to twin stick when I got them. The seller changed the input shaft to a gas version for me before shipping.

Have a tube bender (manual type), so I bent up my own crossmember. I also built the twin sticks and mount.

Now has a front 1350 Caridan DS from a Superduty to match the one in back. 205 output flanges are from High Angle Driveline.

Pics are in my Photophucket acct. Pics are low res since I used my phone. First pic is of when it had an auto, floor shifted.

http://s981.photobucket.com/albums/a...%20Powerwagon/

Also, before this swap, I installed some 63" Chev. springs into the rear. The overarched springs the truck had in it, had no flex and the ride sure felt like it!! No pics of that, yet, but I'll get some up. Built the rear hangers (flipped) out of 1/4" thick square tube. Ride is much smoother (but it does tilt from the engine torque when shifting now) and it does flex much better!

Enjoy!

Greg
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Last edited by mopwer68; 10-25-2010 at 05:27 PM.
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Old 10-26-2010, 06:37 AM   #2 (permalink)
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just my two cents, the np 205 was not available in 1994. 1993 was the last year that it was used. they were in cummins truck, as well as in 1 ton and some 3/4 gasser
might help for getting parts in the future. even though the np 205 is rather common

cool truck though
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Old 10-26-2010, 07:38 AM   #3 (permalink)
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just my two cents, the np 205 was not available in 1994. 1993 was the last year that it was used. they were in cummins truck, as well as in 1 ton and some 3/4 gasser
might help for getting parts in the future. even though the np 205 is rather common

cool truck though
Thanks for the info. The parts did look pretty standard compared to the divorced unit I rebuilt/twin sticked before. Were there many differences in the dodge nv4500s? I think the shifter plate was different and maybe the stinkrows compared to later models. Just going off of memory, which is pretty shotty at times.

Taking the bitch muley hunting this week! Hope it holds up. Always take tools with jic.

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Old 10-26-2010, 08:53 AM   #4 (permalink)
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im pretty sure that the np205's were just about all the same. with the exception being that if it was behind an automatic its 23 spline, and the manuals are 29 spline.
oh and i think on the older trucks like early 70's and 60's the output yokes were a coarse spline, with like 10 splines and the newer ones are fine spline with some where around 30 splines.

im not to sure on the differences in the nv4500's. i havent messed with one yet, my truck has a getrag g360 in it now, and im thinking about a nv5600 swap
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Old 10-26-2010, 08:59 AM   #5 (permalink)
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im pretty sure that the np205's were just about all the same. with the exception being that if it was behind an automatic its 23 spline, and the manuals are 29 spline.
oh and i think on the older trucks like early 70's and 60's the output yokes were a coarse spline, with like 10 splines and the newer ones are fine spline with some where around 30 splines.

im not to sure on the differences in the nv4500's. i havent messed with one yet, my truck has a getrag g360 in it now, and im thinking about a nv5600 swap
The divorced unit that was in my 73 had 32 spline all the way around. The one in there now is 32 out f/b and 29 input.

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Old 10-26-2010, 09:09 AM   #6 (permalink)
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Coarse spline outputs on a NP205 would have to be a '60s model. '70s divorced NP205s are all 32 spline input and output. Also to clarify what Ramchargerman was saying, the 29 spline NP205 is only found behind manual transmissions with the Cummins engine. All gas engine NP205s are 23 spline, regardless of transmission, and Cummins automatics are 23 spline.
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Old 10-26-2010, 09:11 AM   #7 (permalink)
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Quote:
Originally Posted by Elwenil View Post
Coarse spline outputs on a NP205 would have to be a '60s model. '70s divorced NP205s are all 32 spline input and output. Also to clarify what Ramchargerman was saying, the 29 spline NP205 is only found behind manual transmissions with the Cummins engine. All gas engine NP205s are 23 spline, regardless of transmission, and Cummins automatics are 23 spline.
Ok, cool. That verifies that this is from a cummins.

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Old 10-28-2010, 07:38 AM   #8 (permalink)
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Your transmission crossmember sure hangs low. Is it only bolted to the bottom flange of the frame? You may have cracking issues in the future. Keep an eye on the bolt holes. I see thet you used T.A.D. for your driveshafts. Hope you have better luck with them than I did. All said that's a hell of conversion. Looks good. I've done 2. Not really "bolt on" like some will try to tell you.
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Old 10-28-2010, 08:38 AM   #9 (permalink)
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Your transmission crossmember sure hangs low. Is it only bolted to the bottom flange of the frame? You may have cracking issues in the future. Keep an eye on the bolt holes. I see thet you used T.A.D. for your driveshafts. Hope you have better luck with them than I did. All said that's a hell of conversion. Looks good. I've done 2. Not really "bolt on" like some will try to tell you.
If I push up the crossmember anymore the trans will hit the floor. It isn't as low as the original tc. I'll look at some other options for mounting to the frame. I'll either make some steel plates for above the frame or see if I can get the crossmember on top.

These are my 4th and 5th DS from tad. I always take in my own for resizing and balancing. No issues yet.

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Old 10-28-2010, 09:38 AM   #10 (permalink)
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Do not add extra mounts. That just leads to broken transfer case adaptors. Keep the single mount under the adaptor. Normally a NP205 can hang and does not need any other support. Judging from the pics, the NP205 hangs lower than the frame, which is 100% normal for a stock type installation. My NP205 rest right on the skidplate under my Ramcharger which hangs a little below the frame:



This is the factory setup under my Ramcharger with the NP205 waiting to go in:



Note the braces that bolt up to the upper flange of the frame. If your crossmember bolts to the bottom, add some brace up to the top and you should have any issues with it.
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Old 10-28-2010, 01:07 PM   #11 (permalink)
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Actually I wasn't talking about adding extra braces to the tc but on the other side of the crossmember to frame bolts to help spread the load better and prevent cracking.

Greg
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