After about 10 years of wanting to build a transfercase I am going to finally build one. What I want to know is, would people buy this transfercase if I built it. The reason I am asking is I have to get a pattern made for the aluminum casting and it is not cheap but it would be mine and I can have new cases cast anytime. So here are the spec on it. First the low range would be between 2.60 to 2.80 to 1 and then a 1 to 1 high range. As a option you could get another gear box with the same 2.60 to 2.80 to 1 in it. So you could have 6.76 to 1 and a 2.6 to 1 and then a 1 to 1. I am looking a pricing it around $1800-2000 for the 2 speed and about $2600-2800 for the 3 speed setup. This transfercase would be the strenght of a 205 but with a little lower range in it. The weight I am look at is around 120 pounds for the 2 speed and about 150 for the 3 speed setup. Let me know what you guys think of this. Thanks

Do you need a "beta" tester???? :D

Squash

any idea about what the lengths will be? and will it be clockable?

Yes, like the other posters said, it would need to be short, clockable, and as strong as a 205/atlas. I think it would be cool to have a 3 spd transfer case all in one case, rather than 2 bolted together. Price seems high to me, but then so does an atlas.

What about one that is constantly underdriven, with an even lower 'low'.

Something like the high range has a 1.5 reduction, while the low range has a 4.2 reduction.

Mo I gotta ask why?

Here is some of the advantages to my T/C. The rear output will be larger than the stock 205 which is 32 spline 1.375" OD. The front output will still be 32 spline. The length of the 2 speed with adapter will be the same lenght as the adapter and a 205 for a TH400 setup. This should be shorter than a th350 adapter to 205 setup. The 3 speed will be the same lenght as the 203 which is about 21" in length. I might need some testers when I get the cases cast. I would need someone with a big block and a heavy foot. It will be a couple months when I get the first one done. I just needed some idea if I should proceed with the project. I will build one for myself and see how it works.

Get a look at Warden's billet Toyota case, +,no patterns, no air pockets, strength, -, cost of material, need to deal with a CNC dick,(I can hook you up), need to write a program.

So what kind or reduction are you using? planetary gears or what? How big will this thing be? NP205 sized or smaller? Are you cutting your own gears or using something like NP241 gears in a new geardriven case?

Grandpa is on the same track i was thinkin.
dont think so tho as the planetary sections of the 241 etc are rather long, no?

I like the idea of the 3 speed, having the 1:1(normal driving) and a 2.7:1(for casual/tough wheeling) then a 4.3:1(for the bad ass shiat) would be sweet and I'd defintely pay the cash for the simplicity of a bolt on Transfer(w/standard factory-like-adapter) with all of the options of the ORD or toy dual set-ups in a single unit.

But I would only be interested if they came with similar ratios as listed above. And $2,600 seems like a good price for a 3 speed but much more would be a bit scary, but I've forgotten the prices of other options like ORD and whoever else. but I belive they're lower, but wouldn't work in like a flatty, so you would definitely have a market.

Originally posted by Grandpa Jeep
So what kind or reduction are you using? planetary gears or what? How big will this thing be? NP205 sized or smaller? Are you cutting your own gears or using something like NP241 gears in a new geardriven case?

I will be cutting my own gears. We hoping to get a Hob in a month or so. It will be the size of a 205 or a little smaller.

I'm assuming that it will be twinsticked (or 3) and capable of front, rear, both in every range.... The 3 speed would be sweet.

A 3 speed T case would be VERY nice, here on the east coast. Most of the time a 4:1 is too low for mud and a 2.72 is too high for rocks, it would defiantely be nice to choose between the two with out the length of a Klune V added in there.

If you need any one to test a Jeep version:D look no farther.

Good luck sounds like an interesting concept. You should look into developing a Jeep friendly case that would effectively lower the high range as stated above in another post. I know samurai guys have it easy, they dont have to, (but they do) run super low gears in the axles because the low range t cases available lower the high range as well. Which in turn gives you stronger r & p's.

Keep us posted man!

no one cares about jeep aps.
they just rob the real truck running gear anyway

I have a 460 with C-6 in my CJ just begging for a low range T-Case. I'll test her for ya!!!

my opionion would be for a 4 speed t-case
.75:1, 1:1, 2.75:1, 4:1
this gives everything from o.d. to way u.d.
it should have either a center or offset rear output and either side front output. basically it should have 3 rear outputs and 2 front
why? 2 rear axles and a pto
or any rear axle you want
or front and rear steer stock chevy dana 60s with 4.10 or 3.73
or front and rear steer stock ford dana 60's with 4.10's
or a pto driven trailer?
what about setting it up so it could be in all gears at once? so that it has a 8.25 to one low range?
build this
charge under $4000
and i bet you would sell at least a hundred or more

benefits
no more changing r&P
plenty of diversity when it comes to axle choices
run stock trannys with 4cylinder motos
choices choices choices

problems
not easy to design
may be very heavy
not cheap
might have clearence problems for frame and exhaust

if I was rich this is the type of design i would sponsor

Originally posted by mj
Mo I gotta ask why?


If you permanently underdrive it, then people can use their stock axle gears with large tires on the road, instead of having to spend big money on higher ratio gears.

re the permanent underdrive: what he said up there :flipoff2:

FCFred: why not just put a T150 tranny behind there, then a Dana 20 or something.

Originally posted by 82FB



If you permanently underdrive it, then people can use their stock axle gears with large tires on the road, instead of having to spend big money on higher ratio gears.

That was what I was going to say. With 1.5 reduction you could run 40" tires on 3.73/3.54 gears and they are stronger than 5.13's to boot. I have been wanting to make a t-case that was 1.2 to 1 and 4.?? to 1 but not sure on how to go about it.

You build I will buy.....have a 383 500HP 4 runner I'm building that I know i could try it in. If it can ge broke I can do it!!!!!:beer: :beer: :D

66cj,
I've got a totally stock transfer case with a 1.2:1 high range and 3.3:1 low. It's as big a a 205 and as burly as an atlas. It is a fulltime aluminum t-case, but can easily be changed to part-time for about $300. But there isn't any front wheel drive only available when it's switched to part-time. It also comes with a very stout rear mounted e-brake. This t-case is relatively cheap and common, 3 to 4 hundred if you don't find a deal. They are often swapped out for absolutely no reason other than the owners think they hear a whining sound. So the dealership often replaces them with very few miles. However they are geardriven and thus always have somewhat of a whine. They are pretty indestructable if assembled correctly, and there are adaptors available to most 4 speed truck tranny's and some automatics available. There is, however one problem, it is off set to the passenger side in the rear, however this improves the rear drive-line angle. And is not a problem if you can find an old 3/4 ton chevy eaton.
It's the Landrover LT-230.
go check one out before you laugh

Hey....I was just asking about this same idea (perm. underdrive) in another thread...


I think I know the answer (length / weight) but I was crazily wondernig why no-one uses 2 transmissions. Imagine the options with 2 NP435's, and a simple no low range T-case to just split the power.

Originally posted by fcfred
66cj,
I've got a totally stock transfer case with a 1.2:1 high range and 3.3:1 low. It's as big a a 205 and as burly as an atlas. It is a fulltime aluminum t-case, but can easily be changed to part-time for about $300. But there isn't any front wheel drive only available when it's switched to part-time. It also comes with a very stout rear mounted e-brake. This t-case is relatively cheap and common, 3 to 4 hundred if you don't find a deal. They are often swapped out for absolutely no reason other than the owners think they hear a whining sound. So the dealership often replaces them with very few miles. However they are geardriven and thus always have somewhat of a whine. They are pretty indestructable if assembled correctly, and there are adaptors available to most 4 speed truck tranny's and some automatics available. There is, however one problem, it is off set to the passenger side in the rear, however this improves the rear drive-line angle. And is not a problem if you can find an old 3/4 ton chevy eaton.
It's the Landrover LT-230.
go check one out before you laugh

Are adapters available to any common trannies?

I have a buddy that makes the adaptors
I'm gonna run a sm-420
I know he has or has made adaptors for
sm-420,465, np-435,tf-727
i assume he can make whatever is needed, he's one smart fu**er

Originally posted by fcfred
I have a buddy that makes the adaptors
I'm gonna run a sm-420
I know he has or has made adaptors for
sm-420,465, np-435,tf-727
i assume he can make whatever is needed, he's one smart fu**er

I tried to send you a PM so clean out your box.

Tell me where you can find these at. I run a spicer 18 now and built my 60's for it so I aint changing to a centered t-case now. Send me a PM and tell me more.http://www.respite.org/images/cj66dean/myjeeprear4.jpg

dude, you're a perfect canidate for a LT-230
I pmed you my number call me and I'll give you the lowdown

Originally posted by fcfred
66cj,
I've got a totally stock transfer case with a 1.2:1 high range and 3.3:1 low. It's as big a a 205 and as burly as an atlas. It is a fulltime aluminum t-case, but can easily be changed to part-time for about $300. But there isn't any front wheel drive only available when it's switched to part-time. It also comes with a very stout rear mounted e-brake. This t-case is relatively cheap and common, 3 to 4 hundred if you don't find a deal. They are often swapped out for absolutely no reason other than the owners think they hear a whining sound. So the dealership often replaces them with very few miles. However they are geardriven and thus always have somewhat of a whine. They are pretty indestructable if assembled correctly, and there are adaptors available to most 4 speed truck tranny's and some automatics available. There is, however one problem, it is off set to the passenger side in the rear, however this improves the rear drive-line angle. And is not a problem if you can find an old 3/4 ton chevy eaton.
It's the Landrover LT-230.
go check one out before you laugh

Do you have any pictures of the LT-230 T/C?

the underdrive high range is a dumb idea IMO
time to change your 20 year old ring n pinion anyway
r&p are cheap,
AND
even stock 3.73 and 4.10s are incredibly common and you can street run 44" tires and no need for OD
with a deep low range or even deeper 2nd low range your off road needs will be met