Atlas II Transfer case

[blt2krl]

Anyone here running one? Is anyone running one behind a AMC TH-400? I want to convert my TH-400/QT tailshaft to a G.M 32 spline. What tailshaft did you use and what was the install like. What if any adaptors did you use and any other usefull information.

[orangecherokee]

dang brother don't mess around... ;)

[64Trvlr]

Originally posted by blt2krl:
I want to convert my TH-400/QT tailshaft to a G.M 32 spline. What tailshaft did you use and what was the install like. What if any adaptors did you use and any other usefull information.I'd look for a 400/208 tailshaft and adapter then the Atlas should bolt right up. Did you do a search over on Pirate?
:cool:

[Stuka]

The atlas II isnt designed for full size rigs. Its heavy duty yes, but is designed for CJ's and the like. They state this somewhere on their site.

[Iron Horse]

IMO, the Atlas II is more than beefy enough....basically it's a further evolution of a Dana 300...and those are tough.

[blt2krl]

Thanks guys, I did serch POR found some good stuff. I was just curios if anyone here had swapped in an Atlas.

[rockjeep44]

Stuka, they may be "designed" for the smaller Jeeps but with optional 32 spline outputs front and rear, 1350 or 1410 yokes, and a gear driven case, what exactly was the problem? I think that it's plenty beefy for the most harcore wheelin you want to throw at it. The only weakness is the aluminum case but all our jeeps have those now (np229, 208, etc). Personally though, blt2krl, I think that although the atlas is a sweet case, your money could be better spent somewhere else. For instance, I got my NP208 for $250 in great condition, put a 1410 yoke on the front, a 1350 yoke on the rear, and went with it. Also, the 208 has 32 spline outputs front and rear. So for like 350 total spent I've got one heck of a case. The only diff is it's chain driven but I've honestly never seen a chain fail in a 208. Take the extra grand or so saved and buy some beer or something cool like that ;)
-Andrew

[Iron Horse]

Originally posted by rockjeep44:
Take the extra grand or so saved and buy some beer or something cool like that ;)
-AndrewMMMMMMMMMMMM.............BEER. :D

[blt2krl]

Originally posted by rockjeep44:
Stuka, they may be "designed" for the smaller Jeeps but with optional 32 spline outputs front and rear, 1350 or 1410 yokes, and a gear driven case, what exactly was the problem? I think that it's plenty beefy for the most harcore wheelin you want to throw at it. The only weakness is the aluminum case but all our jeeps have those now (np229, 208, etc). Personally though, blt2krl, I think that although the atlas is a sweet case, your money could be better spent somewhere else. For instance, I got my NP208 for $250 in great condition, put a 1410 yoke on the front, a 1350 yoke on the rear, and went with it. Also, the 208 has 32 spline outputs front and rear. So for like 350 total spent I've got one heck of a case. The only diff is it's chain driven but I've honestly never seen a chain fail in a 208. Take the extra grand or so saved and buy some beer or something cool like that ;)
-AndrewI'm Getting 1 ton Chevy axles ( Passenger side droop). I want the 4.3 to 1 crawl and the 32 spline front and rear outputs. I'm also kicking around the (203,205)doubler setup as well. The QT I have now is holding up fine so I won't be changing it out until I shell it. I always save money for beer.... :D

[ April 25, 2003, 11:13 AM: Message edited by: blt2krl ]

[rockjeep44]

LOL. Sounds like you're gettin serious man. I can't wait to see how that turns out. Your truck is sweet already. I hear ya on wanting the 4.3 crawl. Definitely go with the Atlas if you're going for crawl instead of the doubler setup. That setup weighs like 50 billion pounds.
-Andrew

[River Beast]

FulMetal (Mike Cox) has the Atlas II installed... HIS WIFE GOT IT FOR HIM ON HIS BIRTHDAY!!!!! It was impressive in Ouray last summer.... I think she got a good deal on it for around $2200

I haven't seen him here in a while... work may be keeping him VERY busy....

here is a pic of his FSJ...
http://www.jtruck.net/ouray2002/picknick_contest/640x480/S_P8162281.JPG

[ April 25, 2003, 12:12 PM: Message edited by: River Beast ]

[dnixon]

During my search I have found only one time a person broke the atlas and Advanced Adapters replaced it after inspecting it they said there was a flaw... Advanced Adapters is about 10 miles from me up in Paso Robles

[netbear]

Go with the AtlasII with 32 spline outputs
front and rear. The 3.8-1 box has higher
torque capacity if you are worried about it.
Thats what I'm going with. With a 6.32-1 first
gear and 4.11 diffs I think the 3.8 Atlas
will work fine for me. The 3.8-1 box costs
less also...

[Rockwagon]

Originally posted by SLOwag:
Advanced Adapters is about 10 miles from me up in Paso RoblesSound like you need to do some lare night shopping for us!!!!!!! LOL!!!!!

[blt2krl]

Originally posted by Stuka:
The atlas II isnt designed for full size rigs. Its heavy duty yes, but is designed for CJ's and the like. They state this somewhere on their site.I just read through the install manual and it states the 32 spline front and rear output version is good for fullsize applications...

[derf]

A buddy of mine has been running a 3.8:1 Atlas in his full size Blazer for 3 years. It's behind a mildly built TBI 350/700R4 combo. It's never given him a lick of trouble and he beats the heck out of his rig. He's broken two of his front D60 axle shafts but not his Atlas.

[Sambo]

lol if we chop our rigs like andrew ;) it wouldnt be a problem now would it :D
i would like the doubler setup myself,since we have a few dunes out here!!!
run 2-1 for dunes,4-1 in the rocks :cool:

i say go for it paul :D

[Stuka]

BLT2CRL: just going by what I have read in the past. Maybe that was before the 32 spline version came out? I think I have a petersens around here saying it was best for lighter vehicles. But thise was some time ago. If you want a better crawl swap in a granny low 4sp, and if you put a 3.4:1 crawl atlas II behind that, then your looking at like a 88:1 crawl. With the auto your looking at like 34:1

[blt2krl]

Not slamming you Stuka just providing some new info. I personally love my auto for rockcrawling and wouldn't get rid of it. A manual would be a great way to get lower crawl ratio though.

[Stuka]

Originally posted by blt2krl:
Not slamming you Stuka just providing some new info.Dont worry, I am used to it.

[64Trvlr]

Originally posted by Stuka:
if you put a 3.4:1 crawl atlas II I thought the Atlas was either 3.8:1 or 4.3:1. I didn't know they were building a 3.4:1. As for only working in a light rig most of the competition Rock Crawlers I've seen were in the 4500-6000 pound range with way more horsepower that the normal FSJ has. SO I would think it would hold up just fine in a FSJ.
:cool:

[derf]

Originally posted by 64Trvlr:
</font><blockquote>quote:</font><hr />Originally posted by Stuka:
if you put a 3.4:1 crawl atlas II I thought the Atlas was either 3.8:1 or 4.3:1. I didn't know they were building a 3.4:1.</font>[/QUOTE]When I first learned of them, it was only 3.8:1 and 4.3:1. Since then, they've added a 3.0:1 "Highlander" and just recently a 5.0:1. :eek:

[Stuka]

3.8 whatever. Was justing making a statement.

[64Trvlr]

Originally posted by Stuka:
3.8 whatever. Was justing making a statement.I was justing asking a question. I thought they had come out with another ratio. As you said though whatever....
:cool: