1480 u joint to NP205 transfer case

I think they are mainly talking the torque in the diesel vs the gas and how 90% of the gas trucks have at bare minimun 5:13's to keep that 205 alive at 750hp+.
 
stillsmokin said:
Went to the local driveline shop to have a custom driveshaft made for the first gen Dodge and ran into a stumbling block.

I have 1410 joints now, but wanted to put a larger stub shaft on a 4 or 4.5 tube with a 0.125" wall thickness. Problem is, to go bigger on the stub I need to step up to 1480's. I don't think I'll actually gain much by stepping up to 1480's, the bearing caps are a little larger I guess. The only way I can figure to do this is to run a custom NP205 32 spline drive flange and attach a 1480 flange yoke to it. I'm a little concerned about torque shear on the bolts of that mess. I'm open to suggestions.

The Chevy/GMC brush pullers on the forum might be able to help me out...

Someone surely makes a simpler solution?
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I believe High Angle Driveline might make the parts you need.



205 Carnage pic.
IMG_0921.jpg
 
Thats impressive carnage....

I was wondering why it looks like ATF is running out of the 205?
 
That is a serious mess..... I'm thinking that maybe I should re-think my TC options!

:bang
 
Yep, definitely looks like ATF... Maybe the carnage was a lubricant induced problem? Since the 205 runs 80W90.
 
Umm, I dont think oil will have a great bearing on the case failure...

Unless a bearing siezes.
 
stillsmokin said:
Yep, definitely looks like ATF... Maybe the carnage was a lubricant induced problem? Since the 205 runs 80W90.
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Haha, lubrication was definitely not the issue. Lots of hp, hard shifting auto and cast iron was the issue. Lube won't break teeth off gears.
 
jfaulkner said:
Haha, lubrication was definitely not the issue. Lots of hp, hard shifting auto and cast iron was the issue. Lube won't break teeth off gears.
Click to expand...

80W90 prevents gear to gear contact under load conditions. ATF contains FRICTION MODIFIERS so the clutch plates grab the steels in the automatic transmission. Try putting ATF in your dana 80 and taking it for a drive! Put 3 gallons of ATF in your cummins if it doesn't matter. The results will be equally spectacular I assure you. Once those teeth start touching it gets ugly fast, ask any lubrication engineer. Looks to me some people may not be qualified to post with regards to these matters. If it didn't matter there would be one kind of oil period.:bang:bang:bang

For you guys that put up the useable information, thanks again
 
stillsmokin said:
80W90 prevents gear to gear contact under load conditions. ATF contains FRICTION MODIFIERS so the clutch plates grab the steels in the automatic transmission. Try putting ATF in your dana 80 and taking it for a drive! Put 3 gallons of ATF in your cummins if it doesn't matter. The results will be equally spectacular I assure you. Once those teeth start touching it gets ugly fast, ask any lubrication engineer. Looks to me some people may not be qualified to post with regards to these matters. If it didn't matter there would be one kind of oil period.:bang:bang:bang

For you guys that put up the useable information, thanks again
Click to expand...

There are several manual transmissions that spec out ATF fluid for oil. The ZF6 found in the Chevys and Fords come to mind. Why properties do these transmissions have that keep them from eating themselves?
 
yeah, 205's arent what they're cracked up to be, behind a big block chevy, ford or dodge, sure they're undistructible, behind a diesel, not so much as i quickly learned. low range i would break off the rear output shaft, which leads to bearing retainer and case failure, run it in high range i would twist off the input shaft, (mine was also divorced). last pulling season i broke 3 cases, and put in countless input and output shafts, just about every hook, somthing in that POS broke:kick:, now i have a SCS, everythings happy, but then again, it was behind a John Deere 466 in an F250...... mild horsepower, medeoker torque:hehe: , as far as oil, i'm pretty sure i could of run my case dry, because it didnt last long enough to say so....
 
stillsmokin said:
80W90 prevents gear to gear contact under load conditions. ATF contains FRICTION MODIFIERS so the clutch plates grab the steels in the automatic transmission. Try putting ATF in your dana 80 and taking it for a drive! Put 3 gallons of ATF in your cummins if it doesn't matter. The results will be equally spectacular I assure you. Once those teeth start touching it gets ugly fast, ask any lubrication engineer. Looks to me some people may not be qualified to post with regards to these matters. If it didn't matter there would be one kind of oil period.:bang:bang:bang

For you guys that put up the useable information, thanks again
Click to expand...

I am not following why you post this, you seem to have your mind made up, guys are offering you advice with their experience breaking 205's behind the diesels. If your looking for reassurance that yours will be ok, I don't think you will find it.
 
I think it's ProFab that makes a kit for the 205 that makes it full time 4LO and there's one in Kyle Michael's super stock duramax. HOWEVER, unless youa re limited to a stock/oe driveline, I wouldn't do that. You'll have as much money in that case with that kit as you'd have in a good 271 and probably almost enough to have bought a complete SCS or Profab xcase.


I'm curious about the NP200 though. I don't know anything about them. What are they out of? Aftermarket support? What side drop? gear ratios? divorced?



C-ya
 
SmokeShow said:
I think it's ProFab that makes a kit for the 205 that makes it full time 4LO and there's one in Kyle Michael's super stock duramax. HOWEVER, unless youa re limited to a stock/oe driveline, I wouldn't do that. You'll have as much money in that case with that kit as you'd have in a good 271 and probably almost enough to have bought a complete SCS or Profab xcase.


I'm curious about the NP200 though. I don't know anything about them. What are they out of? Aftermarket support? What side drop? gear ratios? divorced?



C-ya
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Hey guys, I'm pretty sure that cracked 205 in those pics IS Kyle Michael's 205 with the profab gears in it. At least I know he has broken his twice and that sure looks an awfull lot like his tranny table in his shop.....
 
stillsmokin said:
80W90 prevents gear to gear contact under load conditions. ATF contains FRICTION MODIFIERS so the clutch plates grab the steels in the automatic transmission. Try putting ATF in your dana 80 and taking it for a drive! Put 3 gallons of ATF in your cummins if it doesn't matter. The results will be equally spectacular I assure you. Once those teeth start touching it gets ugly fast, ask any lubrication engineer. Looks to me some people may not be qualified to post with regards to these matters. If it didn't matter there would be one kind of oil period.:bang:bang:bang

For you guys that put up the useable information, thanks again
Click to expand...

You hit the nail on the head here. 80w90 only makes a small little hole insead of spliting the case in 2 like the friction modifiers in atf does.

If you are interested in a 1480 for the 32spline. Its in the picture, flange style like mentioned, the bolts defiantly do not have a shear strength problem. $200 bucks
 

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I knew Kyle's blew once and he admitted it was a build error, not really parts weakness. I was not aware of a failure since then.

If one can, they definitely need to step to a real transfer case like a Profab or SCS. Forget any of the oe stuff. IF someone has to stay OE, then I'd probably stick to the ones that come in the newer trucks... 261/263, 271/273, etc. as they seem to hold up as good as can be expected. Build one of those NP205s to hold is gonna be more expensive than a modern xcase and still might not be much better and is limited to 4LO only.


C-ya
 
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