Part to full time 4wd?
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Elder User
Joined: Jan 2004
Posts: 887
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From: Colorado
Part to full time 4wd?
Question: Right now i have a 1979 with a C6 tranny and i found out the other night that my transfer case is taking a dive... i have a chance to get a full time transfer case for a good price and was wondering if anyone knows if a np-203 case should fit on my tranny. He says there is a part time kit for it, but im learning as i go on my truck and dont know alot about how that works yet. Also wondering the advantages / disadvantages of full time vs part time for a daily highway driver as opposed to a dedicated 4x4 truck. Any help is greatly appreciated
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Elder User
Joined: Jan 2004
Posts: 887
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From: Colorado
So it should be a NP205 on my truck? I was going to buy it only if the stock one was a NP203.. but i am not sure how to tell... i have tried a forum search and didnt find anything helpful...thanks for your bit
Mountain Pass
Joined: Feb 2003
Posts: 229
Likes: 4
If you have locking hubs and your t-case shift lever has 2Hi, 4Hi, N, and 4low then you have a NP205. The 203 has something like high, high lock, N and low lock i think. Also you can look under your truck at the back of the t-case and if it has a small Circular cover in the center with three bolts in it it is a NP205. You want to stay with the 205, they are arguably the strongest t-cases made and they are gear driven, whereas a 203 is chain driven and not as strong. And yes all 205's are part time and 203's full time unless they have been converted.
Elder User
Joined: Feb 2003
Posts: 760
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From: Boise, ID
Keep the NP205, definitely. Like others said, the 203 does not compare in strength.
Down sides to full-time 4wd?
1. Wears out front drive train and steering parts at an accelerated rate.
2. Wears out tires quicker.
3. MPG is ~2-3 lower.
4. Your turning radius is increased due to front end u-joint bind.
Down sides to full-time 4wd?
1. Wears out front drive train and steering parts at an accelerated rate.
2. Wears out tires quicker.
3. MPG is ~2-3 lower.
4. Your turning radius is increased due to front end u-joint bind.
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Laughing Gas
Joined: Jul 2002
Posts: 843
Likes: 1
From: USA
I'm in the process of rebuilding my 205 at this moment. After 205,000 I pulled it as part of my restoration project. After pulling it down I found only minor wear on the sliding clutches. The thrust washer lock pins required replacement and I'm replacing the idler gear shaft because of missing threads. If you're on speaking terms with your local Ford parts dept. they can get into the books and give you part numbers for your parts search. Ford no longer has any parts for these units so if you really trashed it inside then you'll probably be better off getting one from a salvage yard. The 205 is almost unbreakable and there are plenty of them out there. A complete bearing, seal, gasket kit can be had from Jeff's Bronco Graveyard. MidWest transmissions still has some parts available. If you can get a full set of Ford shop manuals, do it. The Haynes books are ok but you get better breakdowns from the real thing. The store here has the books on CD for a good price but I'm a paper kind of guy and like having the book close at hand.
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Thread Starter
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Elder User
Joined: Jan 2004
Posts: 887
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From: Colorado
I think i am going to re-build the np205 this summer...it will still get by with no problem for the rest of the winter. Even though getting one from a salvage yard might be alot cheaper i think i am going to do it myself and learn something new.. the money i would save wouldnt be enough to pass up a chance to learn a re-build, plus i know more than a handful of people in my area of the state who could help if i get caught up somewhere...Thanks for all the help...---John
Senior User
Joined: Nov 2003
Posts: 416
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From: Southern Oregon
This will help you a bunch , I have a post on rebuilding with pictures of np205. Have fun.
http://bulldogs-house.com/Projects/np205/
http://bulldogs-house.com/Projects/np205/
