88 awd ?
Senior User
Joined: Jan 2010
Posts: 453
Likes: 2
From: Bitterroots of Montana
There are times, at least for me, where I'm in and out of 4wd just going to town. AWD would be much more convenient. In my 03, it's a simple switch on the dash. Its all manual in my 88. In our Subaru, you just get in and drive. I appreciate that on some of the crazy winter days.
My old Chevy was AWD, but my father put lockout hubs on it prior to me to get better mileage. It didn't help much....
My old Chevy was AWD, but my father put lockout hubs on it prior to me to get better mileage. It didn't help much....
Laughing Gas
Joined: Feb 2004
Posts: 1,115
Likes: 13
From: west plains spokane,wa
About 10 years ago I had a 79 chev 3/4 ton with the 203 full time transfer case. Drove it several years, in hi range you could drive at freeway speeds without any problem. Didn't notice A big difference in gas mileage +/- 1 mpg between the other 4x4 trucks I had at the time. Did notice you had to rotate tires more frequently or front ones would wear faster. You could also feel the 4wd a little bit if you had to do some full lock turns of the wheel when parking or turning around. Couldnt tell any real difference when using hi loc or Lo loc, was supposed to lock or equalize the transfer case output.
Cargo Master
Joined: Apr 2003
Posts: 2,408
Likes: 5
From: Parkesburg PA
88, take a look at an explorer and take a look at a dually... Notice anything? The dually is bigger, can haul more and can tow more...
IMO a 4r70W, which is nothing more than the evolution of the AOD simply won't cut it. The 4r100 is the evolution of the E4OD. That's what you'll need.
I'm pretty sure a 203 case would bolt up. From what I know the NP208, BW1345 and BW1356 are all interchangeable between the C6, AOD and E4OD along with the manual transmissions. Those are the only cases I've been interested in but the NP203 was bolted to a C6 and can be swapped for a 205 and 208 as far as I know.
As for the later cases with the viscous center diff that I don't know.
Look here: Ford Transfer Case Identification
IMO a 4r70W, which is nothing more than the evolution of the AOD simply won't cut it. The 4r100 is the evolution of the E4OD. That's what you'll need.
I'm pretty sure a 203 case would bolt up. From what I know the NP208, BW1345 and BW1356 are all interchangeable between the C6, AOD and E4OD along with the manual transmissions. Those are the only cases I've been interested in but the NP203 was bolted to a C6 and can be swapped for a 205 and 208 as far as I know.
As for the later cases with the viscous center diff that I don't know.
Look here: Ford Transfer Case Identification
Fleet Owner
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
I want to say the AWD Explorer/expedition t-case is CLUTCH driven and Not gear or chain driven to allow slippage when needed.
I just dont see the need/want for a FULL TIME 4WD. It will wear parts faster and eat more gas because you are CONSTANTLY spinning wore parts.
You also have to remember the explorer and expedition use CV shafts NOT u-joints.
The reason you were feeling vibrations that night you were flying in the snow was due to the front axle shafts, it had NOTHING to do with the t-case. Sounds like you had a bad u-joint somewhere
I just dont see the need/want for a FULL TIME 4WD. It will wear parts faster and eat more gas because you are CONSTANTLY spinning wore parts.
You also have to remember the explorer and expedition use CV shafts NOT u-joints.
The reason you were feeling vibrations that night you were flying in the snow was due to the front axle shafts, it had NOTHING to do with the t-case. Sounds like you had a bad u-joint somewhere
Fleet Mechanic
Joined: Jan 2011
Posts: 1,709
Likes: 4
From: 8600 ft in Colo
The Explorer AWD T-case (at least the one in my '98 Exploder 5.0) doesn't lave low range, and doesn't lock. The NP203 has high, high-lock, low, and low lock. Being able to lock the T-case is sure worthwhile, at least to me...
You could also just leave your hubs locked, then you can switch between 2wd and 4wd on the fly with a part-time T-case (as long as you're not sliding, and going reasonable straight...)
You could also just leave your hubs locked, then you can switch between 2wd and 4wd on the fly with a part-time T-case (as long as you're not sliding, and going reasonable straight...)
Posting Guru
Joined: Dec 2006
Posts: 1,020
Likes: 2
From: vernon hills IL
only trick with using a 4r100 is none of them were ever offered behind a small block ford. you would need a e4od then upgrade the guts! btw if you do do this go with a 95+ e4od, alot better unit! the 4404 explorer tc would bolt up using the correct 4x4 extension housing .
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Posting Guru
Joined: Dec 2006
Posts: 1,020
Likes: 2
From: vernon hills IL
I want to say the AWD Explorer/expedition t-case is CLUTCH driven and Not gear or chain driven to allow slippage when needed.
I just dont see the need/want for a FULL TIME 4WD. It will wear parts faster and eat more gas because you are CONSTANTLY spinning wore parts.
You also have to remember the explorer and expedition use CV shafts NOT u-joints.
The reason you were feeling vibrations that night you were flying in the snow was due to the front axle shafts, it had NOTHING to do with the t-case. Sounds like you had a bad u-joint somewhere
I just dont see the need/want for a FULL TIME 4WD. It will wear parts faster and eat more gas because you are CONSTANTLY spinning wore parts.
You also have to remember the explorer and expedition use CV shafts NOT u-joints.
The reason you were feeling vibrations that night you were flying in the snow was due to the front axle shafts, it had NOTHING to do with the t-case. Sounds like you had a bad u-joint somewhere
Thread Starter
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Elder User
Joined: Nov 2010
Posts: 731
Likes: 0
From: Ocean County, NJ
Can the 203 case be made electronic instead of having a handle cut thru the floor ?
What is the loc part mean, u have 4hi, 4hi loc ? 4lo, 4lo loc ? My 2 trucks have 2h, 4h, n, 4lo
What is the loc part mean, u have 4hi, 4hi loc ? 4lo, 4lo loc ? My 2 trucks have 2h, 4h, n, 4lo
Posting Guru
Joined: Apr 2011
Posts: 1,119
Likes: 1
From: Hartland, WI
Many AWD vehicles have CV axles going to the front wheels and a front driveshaft with a double-cardan joint. My Typhoon was AWD. It has a BW4472 transfer case with a viscous clutch differential. Zero vibrations, but it was designed to be AWD. I had to be mindful of the transmission since that thing made more torque than many V8s.
That said, if you're going 75 the conditions shouldn't be so poor as to need 4wd/awd. I see those people end up in the ditch usually. Another thing to consider, if you dont need to haul or pull, just get around, look into a used Subaru. By far the best AWD system you can buy.
That said, if you're going 75 the conditions shouldn't be so poor as to need 4wd/awd. I see those people end up in the ditch usually. Another thing to consider, if you dont need to haul or pull, just get around, look into a used Subaru. By far the best AWD system you can buy.
Fleet Mechanic
Joined: Jan 2011
Posts: 1,709
Likes: 4
From: 8600 ft in Colo
The T-case provided for differential action between the front & rear for normal high-traction conditions. The "loc", or lock, positions locked the front & rear outputs in the T-case together for low-traction conditions. In this mode, it's just like a current 4wd system.
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