I just started looking for transfercases for the bronco and I am thinking of ordering this one.
Atlas II
I don't know a whole lot about it yet. I have some questions that some of you might be able to answer. Will this bolt to my transmission without an adapter? Will this reduced transfercase gearing be enough to make up for running 39.5" tires with 4.10 gears? Does anyone know any other companies that might have them at a better price?
These are all the questions I have right now.
If you buy one you can get a much better price through one of their dealers. If you're not in too much of a hurry wait for a vendor on Pirate to have a sale on Advance Adapters stuff.
What transmission and t-case do you have now? That will make all the difference on whether or not an Atlas will bolt up or not.
You're low range while off-road will be much improved, but you won't notice a difference if you plan to drive the Bronco around town. With 4.10s and 40s it'll probably be a dog, but off-road you should have much more control with a 4:1 low range.
As an example of the difference a 4:1 low range makes, Blake (buddy here) has a 4cyl in his YJ with 42s and a 4:1 kit in his NP231. It can't go more than 45-50 on the street with 5.13s, but he still has a whole lot of control over everything when he's off-road. I think it's actually better than when he had 4.56s and 35s, because it would actually go too slow at times on 35s and he had problems with his tires scooting on downhills (not wanting to go fast enough). Now it seems to have evened out some.
Last edited by bburris; 09-26-2004 at 04:23 PM.
i currently have a c6 and 208
You might consider a Klune V in front of the 208. It's not a weak t-case as long as it has plenty of skid plate protection, and therefore never sees a hit from a rock.
An atlas is very nice, but I would think that more low range options would be a nice thing - dual transfer cases.
would it be possible to swap out the 208 for a NP203? Then you could use something like a ORD or stazworks doubler to run a NP205 behind that. That would give you more gearing choices (1:1, 2:1, 4:1). Plus they use easy to come by OEM parts, and can be done much cheaper than the atlas.
well i am not against doing dual cases but i dont know which ones would be best... i also have the transfercase out of that f350... not sure what it is... what i do know is that the 208 is chain driven and i have heard chain cases are hard to do dual cases with and i am curious as to if i can do it.. i have heard that the 208 is pretty strong but it its gearing is only like 2:1... does anyone know what transfercase i have from this 92 f350... i could go look but it is covered up in storage by lots of stuff
208 is 2.61:1
the 350 will have some sort of borg-warner t-case. i would be careful with too much gearing and an auto. might be kind of hard to stop it if your brakes arent perfect.
Steven W
02 Dodge 2500
82 CJ-7 - sitting in a field...
"....Your theory is f*cked up like a football bat...."
I think swapping a 203/205 doubler would probably be your best option. You can find whatever NP203 and a Ford NP205 and run the ORD Doubler kit. That way you'll have a 2:1 low range for normal train riding, and a 4:1 for crawling like you'd have with the Atlas.
i was just looking at the klune v as well and that might be another root... but i dont really understand how the shifting works in them... does it have a separate shifter and you would still have to twinstick the transfer case separately... from what i know you cannot twinstick a 208 becase it is chain driven... one of the goals other than gearing i want out of this project is twinsticks... i watched troy using the twin sticks in the comp last weekend and was sold on it...
from what i could tell with a klune v i could get even lower gearing than an atlas and still be able to use the higher low range... they appearantly have the same bolt pattern as the 208 so no adapter is needed but if i went to a 205 and had to twin stick it this would be more expensive than just ordering an atlas
tate you can dual case the 208 there was a guy on pirate i think that did it a month or two ago or either a 1356 borg warner case i dont remember, which might be the one outta the 350, you can buy a 205 pretty cheap, and twinstick it pretty cheap as well,and the 205 is gonna be the strongest out of all of those 3 cases.
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The Klune is shifted as a seperate range box. All you can do is select high and low range with it. That's the same as you would accomplish with the 203 range box in a 203/205 Doubler.
The difference is that with the Klune you will only have lots of gearing choices. With a 203/205 Doubler you will have similar gearing choices, but you can modify the 205 to work as a twin stick (you can shift high/low and front/rear) like an Atlas.
You'll have a much shorter driveline with an Atlas, but you get an extra gearing choice with the Doubler setup.
The Ford 208 and 205 is a five bolt pattern, so be careful what you try to put together. You're right, a chain case can't be twin sticked. The Klune V is shifted by a seperate shifter - either cable or hard mount.
If twin sticking is that important to you, than look into a doubler. ORD has some great customer service, so just give them a call and see what can be made.
Here's the doubler page:
http://www.offroaddesign.com/catalog/doubler.htm
There's a guy in the vendor's forum on pirate that sells doubler kits pretty cheap. I think about $450. That's just for the adapter.
With the ORD kit you could Triple Stick it
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