Howdy.

I've been on the toyota 4x4 lists for a while, but as far as I can tell, only automatic toys(and cruisers) have AWD(or a locking center diff). So I guess I need to broaden my horizons if I'm going to put a 5 speed AWD tranny in my toy.

Could some of you list AWD trannies for me? GM, Chevy, Ford, Jeep, etc. I also need to know what kind of AWD they have. (I.E. locking center diff, viscous coupling diff, etc.)

I'll need to know what kind of an engine they usually come behind, how much power they can stand(if you have any idea), and if they're a POS, or a decent, reliable tranny.

I hope this isn't too weird of a question. I'm just really curious about this.

Thanks.

Trevarthan, I want to clarify that it's not the transmission that is AWD, it's the transfer-case. A transmission can be mated to both a part-time transfer case or a full-time transfer case. In most cases, full-time t-cases are mated to automatic transmissions.

I don't think I can use any of the automatic transfer cases, though. They're usually hydraulically actuated, right? I would love to get a transfer case from the automatic landcruiser tranny and mate it to my W56 truck tranny, but I don't think it would work.

That's why I'd like to see some manual AWD trannies listed. I suppose I should clarify that and say "manually actuated AWD transfer cases?"

Then again, unless an adapted is made for my W56 tranny, I guess I need the transmission the transfer case mates with, too. Right? And unless the transmission somehow mates with my choice of engine, I'll need to either fabricate a bellhousing, or use the engine the tranny comes with too.

So I guess that's why I'd like to see some "manual AWD trannies." Thanks, though. You've been real helpful. I appreciate it.

I have a manually actuated AWD transfer case (LT230) in my Land Rover disco. :D

Is it a manual tranny too? Or auto? Please state the kind of tranny your transfer case goes behind. (That way I can decide if it would be easier to just grab the tranny/transfer case combo, or try to fabricate an adapter for my W56 tranny. Thanks.

You can get a 727 3 speed auto or a ZF HP22 4 speed auto or the rover 5 speed stick with a LT230.

I have an automatic AWD t-case that came from a 93 Typhoon. I only used the motor and 700R4 tranny. It's all aluminum and I can pick it up with one hand. The guys on the Syclone/Typhoon board say they are good to about 450 hp and then the become popcans. :D

Specs:

Transfer Case: Borg Warner BW-4472
Torque Split: 35% front, 65% rear
Torque Bias: Viscous Coupling

Sweet ride, man. I found a link that describes the typhoon here: http://www.angelfire.com/fl3/FAST/history.html I'd never heard of it before. Too bad it came with the auto 700r4. Can the AWD case be mated to any other trannies? Thanks.

Hey, I just realized that I don't really want AWD. I want Full-Time 4WD. Anything with a locking center diff. None of that viscous coupling stuff. I still want to be able to lock the drivetrain up 100%. Are there any jeeps with this kind of a transfer case?

only like almost all of em. and toyotas, and isuzus, and suzukis, and chevys, and fords, and dodges, and.............:rolleyes:

Dallas

Wow. Great. So which ones?

dude unless i'm missing something your lookin for a plain old 4wd transfer case. i dont know what bolts to your tranny but almost every 4x4 ever made has a tcase that fits your explanation.

Dallas

You want the NP218 or the NP242HD(I think) that came in HMMWVs and I assume Hummers. Full time 4WD. Transfer case modes are 4 wheel HI, 4 wheel Lock HI, Neutral, and 4 wheel Low Lock. For transmissions I've only seen TH400s and 4L80E mated to them but I don't se why something else (32 spline) couldn't be made to mate-up.

WHat do you want? do you want to be in 4x4 all the time??? thats what all wheel drive and fulltime four wheel drive are. Or do you just want to be able to lock in the transfer case. What are you looking to acomplish?

Originally posted by NE-RokToy
WHat do you want? do you want to be in 4x4 all the time??? thats what all wheel drive and fulltime four wheel drive are. Or do you just want to be able to lock in the transfer case. What are you looking to acomplish?

What he said! I am so very confused, but I'm used to it. I think you are looking for something that can be AWD but then lock out the xfer case diff 100% like those in FJ-80s and later model auto 4Runners. Is that what you are looking for?

Originally posted by Trevarthan
Howdy.

I've been on the toyota 4x4 lists for a while, but as far as I can tell, only automatic toys(and cruisers) have AWD(or a locking center diff). So I guess I need to broaden my horizons if I'm going to put a 5 speed AWD tranny in my toy.

Could some of you list AWD trannies for me? GM, Chevy, Ford, Jeep, etc. I also need to know what kind of AWD they have. (I.E. locking center diff, viscous coupling diff, etc.)

I'll need to know what kind of an engine they usually come behind, how much power they can stand(if you have any idea), and if they're a POS, or a decent, reliable tranny.

I hope this isn't too weird of a question. I'm just really curious about this.

Thanks.

Two comments - Syclone/Typhoon cases are AWD but do NOT have a low range..............nor do Bravada's, etc. Jeep has a lot of great choices, pick up the last months issue of 4 Wheel and Off Road (or was it FourWheeler?), they have a very definitive breakdown of transfer cases for Jeeps............some of the newer ones are similar to the QuadraTracs and are full time 4 wheel drive.

NP203's were a good example of a full time case..............most got converted to part time but there are still plenty of full time cases out there. Lock them in 'Loc' and they are radical.

"You want the NP218 or the NP242HD(I think) that came in HMMWVs and I assume Hummers. Full time 4WD. Transfer case modes are 4 wheel HI, 4 wheel Lock HI, Neutral, and 4 wheel Low Lock. For transmissions I've only seen TH400s and 4L80E mated to them but I don't se why something else (32 spline) couldn't be made to mate-up."

NOW You're talkin'! That's exactly what I want. For those of you that seem to be a little confused: Let me elaborate.

AWD traditionally refers to transfer case(or transaxle) setups with a viscous coupling, or limited slip differential. These cases DO NOT lock up into full 4wd. You basically have another open diff in your transfer case, in addition to the two in your axles. This setup is great for pavement vehicles. I was confused when I originally posted this thread. I thought AWD was the same thing as "Full-Time 4WD". It is NOT. AWD is useless off pavement.

"Full-Time 4WD" refers to a setup where the transfer case has a "center" differential, just like AWD. However, in a "Full-Time 4WD" setup, the differential has a lock mechanism. Flip a switch, and it acts exactly like a NORMAL transfer case. (i.e. no slip between the front and rear axles) This is extremely desirable for high horsepower applications, because you can run in 4wd high on DRY pavement. When you want to go off-road, all you do is flip a switch, and your center diff locks up. The landcruiser FZJ80(93-98) has this setup. However, it only comes with a automatic tranny. The "Full-Time 4WD" transfer case was never mated to a 5 speed landcruiser from the factory in the US. I dislike automatics.

Now, the one gentleman mentioned a hummer transfer case that does JUST what I want. Full-Time(on pavement) 4WD High, Locked 4WD High, Neutral, and Locked 4WD Low. I definately want to keep my low range.

Now here's what I'm shooting for: I currently have a toyota pickup with a 22re and a W56(manual) transmission with a stock transfer case. It's an alright setup, but I want a motor with more power. I want about 200HP. AND I want a transfer case with "Full-Time 4WD". If I can possibly find one that will bolt up to my current W56 tranny, then I know exactly what motor I'll use. If I can't, I'll use just about any motor I can find that meets those requirements.

If you want to get chevy stuff use a 4.3 v6 or 350 (or any sbc) v8 with the sm 465 transmission and then use the NP203 transfer case. It has fulltime 4wd and it also has a loc position for hi and lo that makes it act like any other part time transfer case.I would expect that there are other options but this one would be pretty cheap and you can get 3.6 to 1 gears for the 203 now!

Curious why you want fulltime 4x4 so bad? besides taking away performance and gas milage on the street the only advantage I see is in light snow. And yes I have driven both chevy's with 203's and jeeps with quadratracs. Oh yeah unless you get a custom adapter your pretty much out of luck with your toy tranny as far as I know.

Isn't the NP203 a little unreliable in full-time mode? Without the milemarker part-time kit? It's definately an option, and the cost is a definate plus, but I've really got my heart set on a 5 speed. And the (4 speed) sm 465 isn't even synchronized in first gear. I think it may be just a little too old-tech for my taste. Let me know if there's anything I'm missing though.

I have never heard any complaints of unreliability with a 203 case. The one we swapped into my Dads 65 Suburban held up to a ton of street abuse (did you know with 4.10's on skinny 33's a healthy 350 will actually spin the tires a bit even w/a fulltime case)
:D It had some thrashing offroad as well and it never faltered. The only reason that people put the kits in em is to get better mileage. I don't know how much it helps really. In my truck I run drive flanges instead of hubs in the winter so I can shift my 205 on the fly to keep on the road, and realistically I don't get more than 1/2 mpg better in the summer. Anyway I think the 203 is a pretty good deal, but I you want to spend a bunch of money I am sure there are better options.

Are there any 5 speeds that bolt up to it? With an adapter maybe?

Hey, how about you jeepers with the NP242 full-time transfer case? I read that a beefed up version of this transfer is used in civilian hummers. Does it have any reliability issues? Did it ever come from the factory behind a 5 speed?

My Montero's system has the following modes for its transfer case:

2WD
AWD High range (using an internal viscous coupling)
4WD High range (mechanical center diff locked)
4WD Low range (ditto)

Unfortunately, only autos in the US with this setup AFAIK. On the downside, the low range is a measly 1.9:1 and I think you're into a custom adapter. On the up side, you could get the whole Montero drivetrain and have that 3.5L 200hp V6 you were talking about on the other thread in one swap (actually its 205hp/229 ft-lbs). The 95-96 Montero had a twincam version of the 3.5 that put out 215hp, but its less reliable and peaky. I'd say the NP203 with a GM 4.3 Vortec would be a killer swap though. I'm drooling over that 3.6 low range!!