np241/241 doubler ??

[k5 krawler 50]

I've been doing a little research on the n241 and np231 doublers, and i was wondering if a 231/241 doubler or 241/241 doubler would be up for the abuse of a fullsize rig? I currently have a built 406 and i'm runnin 5.13 gears in the axles, so i dont know if the second 241 would handle the load? The reason i'm contemplating using a 241 over a 205 is b/c i need to find a 6 bolt pattern 205, and i heard that those are pretty hard to find.. so any input on running the 241 as a second case would be awesome.. thanks.

 

[Masiony]

I've been doing a little research on the n241 and np231 doublers, and i was wondering if a 231/241 doubler or 241/241 doubler would be up for the abuse of a fullsize rig? I currently have a built 406 and i'm runnin 5.13 gears in the axles, so i dont know if the second 241 would handle the load? The reason i'm contemplating using a 241 over a 205 is b/c i need to find a 6 bolt pattern 205, and i heard that those are pretty hard to find.. so any input on running the 241 as a second case would be awesome.. thanks.

the gear reduction planetaries would be fine. some will argue with me, but i think the chain would be fine aswell. just keep the case away from rocks (aluminum). btw, axle gearing has no effect on the doubler.

if it was me, i would run it with no hesitation, especially considering the price, and the better gearing.

 

[k5 krawler 50]

Thats what i wanted to hear... I agree, definitely cheaper, and you can get some pretty deep gearing, just outta curiosity what gearing selections would you have with a 241/241 doubler? and what it be better to run the 231 or the 241 as ur first case?

 

[BGKYK5]

Run the strongest case as the transfer case and use the weaker one for the range box. Your gearing would be 1:1, 2.72:1 and 7.40:1 (2.72x2.72).

I personally like the idea of a 241 or 231 as the range box with a 205 as the transfercase. Then you would get more options with 1:1, 2:1, 2.72:1 and 5:44:1 with a much stronger transfer case to handle all that torque.

7.40:1 is too low IMHO.

 

[k5 krawler 50]

i was thinking that a 205 would be the ultimate case to run behind the 241 because of the strength issues, but i'm having a hard time finding one with the 6 bolt pattern, where 241's are everywhere in my area...

 

[Hossbaby50]

It is worth a try but I am not sure the 2nd 241 will be able to handle all the power for the long term. It will also make your drivetrain fairly long so if this is for a K5 you will be running a pretty short rear shaft and a pretty long front shaft.

IMO and my future goal I would do a 205. Keep looking around for one with the 6 bolt round and jump on it when you find it for a good price. Also a 241 can not be modified for twinsticking so you will not have the option of being front dig capable. Like mentioned the 205 also offers more & better lowrange options.

I don't think it would hurt to try and it might work but I think it wouldn't last. Even the 241 HD's in Cummins powered trucks won't hold up to heavy power from them and they are rated for more input torque then the 241's we use. Yes I know it is a Cummins but your strong SBC with a 2.72 multiplier is going to act pretty mean to that 2nd 241.

Harley

 

[Masiony]

It is worth a try but I am not sure the 2nd 241 will be able to handle all the power for the long term. It will also make your drivetrain fairly long so if this is for a K5 you will be running a pretty short rear shaft and a pretty long front shaft.

IMO and my future goal I would do a 205. Keep looking around for one with the 6 bolt round and jump on it when you find it for a good price. Also a 241 can not be modified for twinsticking so you will not have the option of being front dig capable. Like mentioned the 205 also offers more & better lowrange options.

I don't think it would hurt to try and it might work but I think it wouldn't last. Even the 241 HD's in Cummins powered trucks won't hold up to heavy power from them and they are rated for more input torque then the 241's we use. Yes I know it is a Cummins but your strong SBC with a 2.72 multiplier is going to act pretty mean to that 2nd 241.

Harley

first i want to say that a 241 is stronger than a 205 in certain aspects. the gear reduction part of the 241 is stronger than a 205's. but the chain may be the suspect part. i have not personally long term tested the 241's guts so i can only speculate and go by the numbers. but, i will say that a 241 certainly is a close second in the race for the strongest stock cases out there.

also, my doubler adds 8" to total length. with a sye, that about cancels it out as far as rear shaft.

 

[Masiony]

...7.40:1 is too low IMHO.

not for my 2.8

 

[Hossbaby50]

As far as stock GM cases I would say

205
203
241
208

I am all for beating on the 241's and 208's because I do believe they are underrated as trail capable transfer case. I have personally beat the snot out of 208's for the last 6yrs. In that timeframe though I have had to refurbish my 208 several times for various parts starting to fail. Mostly bearings and one suspect plantary set that was making alot of noise.

I will tell you a 208 will take alot more abuse then most people give it credit for but a 208 isn't anywhere near as tough as a 205. A 241 is basically a redesigned and upgraded 208 which is my basis for saying I don't believe it will last long term. I have also seen what heavy input torque and heavy use can do to the 241HD in Dodges which is even more upgraded and stronger then the Chevy. Sled pullers have literally split the cases in half when the chains busted and blew through the case. They upgrade to a Ford 271 case I believe when 241HD's stop cutting it.

Harley

 

[k5 krawler 50]

alrite well this mite be an ignorant question, but how would a dana 300 hold up behind a 241? i havent seen anyone run them in full sizes, but i see people runnin them in jeeps with pretty hefty motors all the time.. is there a reason y no one runs one of those?

 

[Hossbaby50]

A D300 is a pretty strong case too but it isn't quite as tough as a 205. They are usually pricey also just like the 205 you need to find though. They are basically the Jeeps guys 205's. They like them cause they are pretty strong and you can do the lowgear kits in them to get them to 4:1.

Best option is 241/205 but a 241/D300 isn't terrible either.

Harley

 

[Masiony]

people run them behind a v8 in a 4-5k jeep. they are a gear driven 2.62 low range twin stickable and fixed yoke outputs. the only reason i didnt use one is the fact that 241's and 231's are virtually everywhere and super easy to find.