I'm almost pretty sure that I'm positive I am going to run an Atlas 4.3, but I thought I would check to see what it would take to double down on an NP205-But NOT the Doubler kit utilizing the 203 half. I need all the space I can get. I've heard that the 4-to-1 kit is a nightmare, and will cost some bux and you gotta have a Turbo 400 205, yadda, yadda, yadda, bla, bla, bla. So, what does it really take?

All that I have seen is that there is no lower gear kit for the 205. The reason I have heard is that the case is too small to fit much bigger gears, than, lets say, 2.5:1 or so, so basically the entire low range box woudl need to be replaced.. I am sure you could do it, and put in something like a Klune as the range box, but by that time, the atlas would have been cheaper.. and much easier.

There is NO low gear set for the 205, yeah it blows. BUT, the option I am going with is the SM465, 4:1 Klune-V, NP205. With 6.72:1 R&P, that will yield around 350:1 crawl. But i like the option of having 2:1, 4:1, or 8:1 to choose from as far as low ranges. this setup is not too long to fit in a Jeep, I have a TLC. but a CV rear shaft is probably necessary. If you have an auto trans. then your options are fairly limited, and i would suggest the atlas if you can afford it.

I didn't want ot mention what I was putting this in 'cuz you'll all laugh at me, but it is going in a Suzuki Sidekick! Overkill? To say the least! It will consist of a 4.3 fuelie, a TH 350 auto, dual 60's with a Detroit, a spool, 35 spline shafts throughout. I'm using all this beefy stuff 'cuz I already had most of it from a Scout I shut down:( . It just seemed pointless to leave a punie case in there with all this good stuff around it. That, and I feel like wheelin in a Tux from now on! So, with an 86 inch(it probably will get stretched) wheelbase, I need to keep everything nice and short.

The Doubler's only 6" longer than a solo 205, and probably about that compared to an atlas behind a TH350. At 86" I'd stretch it to fit the drivetrain and consider it bombproof.

The problem with the Doubler lies in the fact that the 205 is already larger and heavier than an Atlas. I was going to run dual toy cases, but the cost was already building up to around $2000, by the time I got all the Chevy to Toy adapters, the top loader shifters, the dual case kit, and another case. So once you hit the $2000 mark and have a relatively stout driveline, what's another $500 to pretty much seal the deal on breakage. Not to mention that fitting an Atlas under the 'Kick will be a chore, let alone a 205 and half a 203.
Stretching the wheelbase isn't as simple as it sounds. The headlight buckets protrude into the fenderwells enough to hit tires on tuck, and in the back, the fuel filler and tailights are right in the way as well. In the past that wouldn't have bothered me, but I would like to keep this thing as stock and basic LOOKING as possible. I will be running full width one-tons narrowed 5". Hopefully that will keep the tires away from the headlight buckets and allow me to move the axle forward a bit. If I could get 90" out of it, I would be happy as a clam! Whatever that means.

Originally posted by PW
The reason I have heard is that the case is too small to fit much bigger gears, than, lets say, 2.5:1 or so,

Isn't an ATLASII smaller than a 205??? anyone have any pics comparing the two??

Originally posted by Cliffhanger


Isn't an ATLASII smaller than a 205??? anyone have any pics comparing the two??

yah, but the atlas is based on the dana 300... it is only considered as strong as the 205 because it has 32 spline outputs, and for dana 300s.... yah, there are 4 to 1 kits out there

The 205 is a bit bigger, the outputs are farther apart, the case is taller and i think it's a squeeze deeper. Overall, front face to ujoint I think the 205 might be shorter. i think an atlas is about 13" and a 205 is about 12.5? We are probably becoming "preoccupied with inconsequential increments" at this point.
No matter what it's bigger and harder to fit in a really small vehicle.

I'd use (am gonna) a Dana 300 with a 4to 1 in it, they are strong, cheap, and short...

The problem with the 300 is the puny output shaft. Just ain't gonna supply the beef and security I want. I could probably get away with the Toy case(s). I would only be looking at about $1500 to get it on the auto with a 4.7 gearset. I don't often hear of them breaking. Not sure about the strength of the 4.7 gears though. Anyone heard any nasty rumors?

i run a dual case toy with 4.7 gears behind a sm420 and a 4.3

i am brutal on my rig and it seems to hold up. i doubt you can kill it behind a sammy. FYI my rig weighed 4700lbs at the time i failed the gear set

note.............. to date the only 4.7 gear failure was in my rig and it was due to a faulty gear set. marlin replace my entire transfer case at no charge.

Hmmmmmm. Let's see. Small. Superlight. Geared lower than the AtlasII. Remind me again why I've made a post out of this? Here's the biggest catch-I have a local shop that might swap me a built-to-da-hilt Atlas II for my lifted 87 Sub. I am losing about a grand off what I want out of it, but it IS an Atlas. Anyone want a Sub on 35's? Going cheap!
Thanks for the shove, Camo. My 'Kick should weigh in at around 2700 pounds MAX fully loaded. I think the Toy case will serve me fine. Does High Angle make a larger yokes or flanges for that case so I can run Huge CV's? I really get annoyed when my driveshafts let go.

Originally posted by elf_cruiser
There is NO low gear set for the 205, yeah it blows. BUT, the option I am going with is the SM465, 4:1 Klune-V, NP205. With 6.72:1 R&P, that will yield around 350:1 crawl. But i like the option of having 2:1, 4:1, or 8:1 to choose from as far as low ranges. this setup is not too long to fit in a Jeep, I have a TLC. but a CV rear shaft is probably necessary. If you have an auto trans. then your options are fairly limited, and i would suggest the atlas if you can afford it.

I'd have 2nd thoughts about putting 4:1 Klune box in the middle of all the heavy-heavy duty beef of a 465, 205 and 2.5 ton axles. The 4:1 Klune is rated at only 550 ft-lb input, 2200 output. The 2.7 is rated at 1350/3500. Both are rated at 4000 straight through.

Charlie

i'll see if i can get phil to tell us about the 3.80 gearing there looking into on the 205 hehe-Jess

Whatch doin? Read my post up above and answer that question for me. Make a big 'ol CV for a Toy?

oh ya i also run jesse drive lines and on the rear use his cv joint. i have yet to bust one.

Originally posted by camo
oh ya i also run jesse drive lines and on the rear use his cv joint. i have yet to bust one.

Me too... And I've tried. :cool2:

I'd have 2nd thoughts about putting 4:1 Klune box in the middle of all the heavy-heavy duty beef of a 465, 205 and 2.5 ton axles. The 4:1 Klune is rated at only 550 ft-lb input, 2200 output. The 2.7 is rated at 1350/3500. Both are rated at 4000 straight through.

I know that's what the numbers say, but i have talked to the guys that designed them, and they've put 4:1's behind v-8's and granny-trannies with no prob. I'm usually a gentle driver, and in any section requiring a large bump, i will just shift into normal low, with the klune in 1:1. Bumping it at 350:1 doesn't really do anything...

Laters...

Originally posted by onetoncv
i'll see if i can get phil to tell us about the 3.80 gearing there looking into on the 205 hehe-Jess

Uhmmm I'm stupid....Please clarify :eek::beer: :beer: :beer: 's for you if you mean lookin' into regering for a 205 I'd pay big $$$$ for a strong low gearset for my baby.....

Lower NP203 gears really aren't an option for me. Lower NP205 gears, I'm definitely into that. Even if it's only a relatively small gain (though something in the 3.5-4.5:1 range would be ideal). But it's gotta live behind big block torque and in front of 44's!

--Rob

Originally posted by onetoncv
i'll see if i can get phil to tell us about the 3.80 gearing there looking into on the 205 hehe-Jess

i'll see if they have pics yet of there proto type gears - and as for the big block and 44's hehe- we just will have to see if it holds- an atlas might cringe on that combo -:D-seing how the gears are the same size as a d-300 - we do make a larger type toy c/v its a later modle - if you go 205 t-case there's always the one ton c/v and maybe even the 2 1/2 ton c/v you ever know what's going to pop up - Jess

Originally posted by onetoncv
i'll see if they have pics yet of there proto type gears - and as for the big block and 44's hehe- we just will have to see if it holds- an atlas might cringe on that combo -:D-seing how the gears are the same size as a d-300 - we do make a larger type toy c/v its a later modle - if you go 205 t-case there's always the one ton c/v and maybe even the 2 1/2 ton c/v you ever know what's going to pop up - Jess

Who's THEY?? I thought this would be out of your shop?

If the weak link on a D300 is the output shaft then as long as the 205 output was similar to (or the same as) the origional then it should not matter MUCH that the gears are the same size as a D300.

Anyway it only needs to hold up to a Stock caddy engine 4:10's and 37's for me.:cool:

You've got my blood pumping Jess:usa:

Spill the beans Jess. Like Cliffy asked, who is they?

Yeah, come awn, what's the scoop on the low 205 gears, I'm in the middle of building a doubler now and am looking over options.

what a let down- they are on hold - if they get some new news on the 3-1 or so gears i'll keep ya posted-don't want to say but they have huge pockets -jess:D

Well someone is DA' MAN!!!!! we just don't know who yet. We all already know Jess is *Yeah suckin' up for the twice-a-month drawin'*:flipoff2:

3.0:1 isn't shabby considering the...OPTIONS???:confused:

I'd take that, but I probably wouldn't pay as much for 3.0
:1 as I would for like 3.5-4.0:1 Course I'm probably just splitting hairs huh:rasta:

Whatever...Just be sure to keep us posted Jess.:beer:

Originally posted by Cliffhanger
Well someone is DA' MAN!!!!! we just don't know who yet. We all already know Jess is *Yeah suckin' up for the twice-a-month drawin'*:flipoff2:

3.0:1 isn't shabby considering the...OPTIONS???:confused:

I'd take that, but I probably wouldn't pay as much for 3.0
:1 as I would for like 3.5-4.0:1 Course I'm probably just splitting hairs huh:rasta:

Whatever...Just be sure to keep us posted Jess.:beer:

Hell yeah, I'd go for a 3:1 instead of putting in two tcases. 3:1 would put me at 90:1 overall. I'd be much happier with that than the 60:1 I'm at right now.

Originally posted by Charles Aarons


I'd have 2nd thoughts about putting 4:1 Klune box in the middle of all the heavy-heavy duty beef of a 465, 205 and 2.5 ton axles. The 4:1 Klune is rated at only 550 ft-lb input, 2200 output. The 2.7 is rated at 1350/3500. Both are rated at 4000 straight through.

Charlie
I have my Klune in the middle of some heavy duty stuff with no problem.
Big V 8, 727,Klune 4:1, NP 205, 60 in the front and 80 in the rear. All locked with 38.5's. No granny in the tranny but still lots of torque.
Rig weighs 5500lbs and so far no breakage upstream of stub shafts.:)