T18 + Atlas question! (Bull gear?)

[KYJ10]

Elliot, I feel very lucky, as I got the long adaptor between the bellhousing, adaptor between tranny and case, and the 31 spline 208. And all I had to do was help him take it out, and trade my 176/208 combo. Not bad for a few hours worth of work. Dennis

[ October 27, 2003, 12:51 PM: Message edited by: KYJ10 ]

[Stuka]

I so wish I could find a T18a/208 for my J10.

[Elliott]

Originally posted by KYJ10:
Elliot, I feel very lucky, as I got the long adaptor between the bellhousing, adaptor between tranny and case, and the 31 spline 208. And all I had to do was help him take it out, and trade my 176/208 combo. Not bad for a few hours worth of work. Dennis

Did I mention you suck!

[scotty]

id rather have a 435/205 than a t18/208.

the 80 and up t18/208 is an odd duck,nothing like the older t18/d20 nothing external will exhange.it is like a ford t18 with a long input shaft,so some parts may be hard to come by.

this version also does not have a removeable pto cover. this may not matter to the majority of people,but its a good feature for some of us.

also you are more or less stuck with the 208 that it comes with. the 31 spline pattern is the same as ford,but the ford 205 has a short input gear and has very little spline engagement. only bout 3/4 of an inch in order run a ford 205 behind his 83 j20 t18 a friend of mine actually welded 2 205 input gears together to make it longer. sounds kinda iffy ,but its been in there 4 or 5 years now.

the rediculous length of the long input and the 7" spacer between the tranny and xfer make it next to impossible to install in anything other than a j truck. you have all sorts of issues when instaling one in a wag/chero. just ask panther,hes done it and can tell you all about it.

a 435/205 goes in much easier and is just a good of a tranny. plus you always have the option of running a pass side 205 with a simple input gear swap into the correct version of a gm 205.

the 435 has a slightly lower 1st gear,and even a pto port [img]smile.gif[/img]

not knocking the post 80 t18 for yall that have lucked into finding one.as i mentioned,my friend runs one inhis xj-strengthwise its just as good as the 435 or older t18.he beats the snot out of it.

just wanted to point out for the guys that want a granny 4spd for their post 80 rigs that the very elusive t18/208 is not the only option [img]smile.gif[/img]

[netbear]

I made a typo in my first post. My trans is
the original 1979 T18A with 6.32-1 low. The
original transfer case is a Dana 20.
The Atlas and T18A adaptor from Advance Adaptors
just arrived and I will know a lot more once I
unpack everything. From memory, I believe
the 1979 T18A has a 10 spline output.

[scotty]

nope,should be 6. you only got 10 in a couple oddbal trannies like the t14

[netbear]

OK folks, here's an update.

I found 10 min to unbox everything
and the Atlas that they sent me has
a female 23 spline input and they sent
me a heavy cast aluminum adaptor to bolt
the T18 to the Atlas along with a new T18
23 spline output shaft. I have no idea
how easy or hard the install of the new
output shaft will be. This is my first time
through this. I have to say everything
looks very nice. The 1350 CV flanges
on the F&R outputs are huge and the Atlas
is massive. It's like Christmas!

Next step for me is to drop the trans out
of my Jeep and put everything on the bench.
If anyone has experience swapping T18
output shafts, I'm open to any helpful
advise.

Can't wait to feel that 100-1 low-low with
the 401.

[Stuka]

I hope you have some massive axles [img]smile.gif[/img]

[Elliott]

Originally posted by netbear:
OK folks, here's an update.

I found 10 min to unbox everything
and the Atlas that they sent me has
a female 23 spline input and they sent
me a heavy cast aluminum adaptor to bolt
the T18 to the Atlas along with a new T18
23 spline output shaft. I have no idea
how easy or hard the install of the new
output shaft will be. This is my first time
through this. I have to say everything
looks very nice. The 1350 CV flanges
on the F&R outputs are huge and the Atlas
is massive. It's like Christmas!

Next step for me is to drop the trans out
of my Jeep and put everything on the bench.
If anyone has experience swapping T18
output shafts, I'm open to any helpful
advise.

Can't wait to feel that 100-1 low-low with
the 401.

Sweet!
You stumped us all too. [img]tongue.gif[/img]
Wonder if that adaptor would let 'ya plunk on a NP205?

[Elliott]

Oh yeah, emailed you some links and rebuild guide/diagrams.

[scotty]

ahhhhh yes,makes sense now. [img]smile.gif[/img]

and yes,you could plunk on a dodge 205 with that adapter and taislahft. the dodge 205 is round pattern,and 23 spline input,just like the d300.

[netbear]

Elliott,

Got the info. It will help me a lot.
Thanks for taking the time to get it
to me.

Stuka,

35 spline FF Dana 60s front and rear. I will
be using 1350 CV drive shafts front and rear
also. Anything can break but this stuff should
hold up to my mild driving style and 35-37"
tires.

[netbear]

Scotty,

Thanks for the NP205 (Dodge) info. I was
not aware they also use the 23 spline and
Dana 300 bolt pattern. Interesting...

I am always in awe of the info you guys
have. The main reason for me going with the
Atlas is that my rig needs to fit a multi-
purpose role where I can drive it for
extended highway trips and wheel it out
in Utah with my friends once a year.
The deep transfer case gearing allows
me to keep the highway rpms down under
3k even at 75 mph and be able to go slow
over rocks. I know there are other combos
that can do this but this is the one
I decided to go with.

[Elliott]

What does it cost just for the T18 adaptor and output shaft from them?
I've got a spare T18 and if I build a dually it would be nice to swap in a NP205.