I currently have a sm465/NP208 combo ready to swap into my blazer. I just received an NP 205 divorced T-case and was wondering what the possibilities for a doubler with a divorced case are. The NP205 is a passenger side drop. I also have an NP241 out of a 93 suburban (drivers drop) that I can use. Any suggestions?
CK5
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Divorced NP205 to a NP208
- Thread starter K5-CJ5
- Start date
Brown75K5
1/2 ton status
The only doubler kits I know of and have heard of are for a NP205/NP203 combo, basically what Off Road Design has http://offroaddesign.com/catalog/doubler.htm, other vendors out there offer the same setup kit. As for a NP205/NP208, I haven't run across one or heard of anyone running it. Although you might be lucky and find someone who has attempted this. Hell just google it and see what comes up.
There are some people that have run a divorced 205 behind another transfer case as a dual transfer case option. You'll run into a few problems doing this, in your case that will be WAY too long for a Blazer and the passenger side of the 208 case will likely interfere with the front driveshaft. Plus the 208 housing may not be up to that task.
The 208 would get in the way, but what about the drivers drop 241? It ouwld be on the opposite side so I don't think it would be a problem.
An alternative is there a way to make a divorced 205 a married for a doubler?
I also have a sm465/np205, is the sm 465 from the mid 70's stronger/weaker than a 465 from an 88 blazer?
An alternative is there a way to make a divorced 205 a married for a doubler?
I also have a sm465/np205, is the sm 465 from the mid 70's stronger/weaker than a 465 from an 88 blazer?
Any divorced doubler setup will be too long for your K5. Search my username for a 241 doubler and you'll see how it can be done in a married fashion.
Nope, the face of the divorced 205's is different.
The later one is 32 spline and stronger than the early 10 spline transmissions.
Thanks for the info! Mine would actually be easier and wouldnt require a clocking ring because my 241 is a drivers drop already. Basically I can run the full 241 (minus the output) and then run a driveline from that to my NP205. Do you know how long the shaft between the 241 and 205 would have to be? Im thinking that I would have enough room.
Try to make it as short as possible, once you go measure it you'll see how short your rear driveshaft will be. I'm not saying it's impossible, but my rear driveshaft isn't long and I don't have the back half of the the 241 (with the slip yoke, is probably 10-12") plus an intermediate shaft (probably 6-8" at minimum) plus a couple more inches in the divorced input. At that point you may end up with 12" left for a driveshaft.
I cant wait to get my 700r4 out and my 465 in! I have an SM465/205 combo (racetrack pattern 205) and a newer 465/208 combo. Im gonna sell one of them, which would be a better tranny to retain? I know the newer is a 32 spline output versus the 10 spline, but in the future of wanting to do a doubler should I keep the newer with the 208?
The old 10 spline one is easier to get a 205 behind for sure, the newer 32 spline one is better/stronger/much easier and cheaper to use with a doubler.
I'd keep both.
and divorced 205 = fixed yoke rear parts . and 32 spline front output to swap in for biggest front output for strength. 
Im keeping the divorced 205 for, something! Im helping my nephew build a CJ-5 which is going to sit on a K5 frame, so one of the combo's im keeping the other he gets! I have no interested in just having a 205 in the future so I guess Ill keep the 465/208 combo with plans of either a 203/205 doubler or leaning towards a 241/205 combo. Has anyone ever done a 208/205 combo?
i'm smack in the middle of a 241/205 doubler build right now. It's going to be very similar to Chris'(38377k5).
sixb (David) and I were just discussing that very thing the other day while standing over several of his 208's I'm not sure of what planetary set up the 208 has internally. I would wager that it could be done, in the same manner of my 241/205 doubler. You would probably need a custom made intermediate shaft manufactured. In the same manner I'm having my intermediate shaft made.
At this rate, money wise, it would have been about 6's if i would have purchased a 203/205 doubler kit.
Except with the 241/205, I get a final ratio of 5.33 to 1. With a 203/205, you only get 3.92 to one.
That is why I went this route. If your interested, check out page 3 of my build thread.(breakin' my own arm, pattin' myself on the back)
i'm smack in the middle of a 241/205 doubler build right now. It's going to be very similar to Chris'(38377k5).
sixb (David) and I were just discussing that very thing the other day while standing over several of his 208's I'm not sure of what planetary set up the 208 has internally. I would wager that it could be done, in the same manner of my 241/205 doubler. You would probably need a custom made intermediate shaft manufactured. In the same manner I'm having my intermediate shaft made.
At this rate, money wise, it would have been about 6's if i would have purchased a 203/205 doubler kit.
Except with the 241/205, I get a final ratio of 5.33 to 1. With a 203/205, you only get 3.92 to one.
That is why I went this route. If your interested, check out page 3 of my build thread.(breakin' my own arm, pattin' myself on the back)
honestly matt I almost never use first gear in double low, its too low. The options are cool though, I switch between 2:1 and 2.7:1 all the time
As for the 208, it has a weaker planetary setup and you'd either be in for turning it upside down or putting a chevy input in a ford 208, the 241 is the way to go
It seems like the easiest way would be leaving the 465 and 208 alone and adding the 205 behind with a short driveshaft. This would be super easy because you could even use the existing slip yoke driveshaft just by having it cut down (and leaving it shoved in all the way). Having the 205 last also makes sense because it is stronger. But I don't see how you could make a rear driveshaft work at that length.
You might look into the doubler setups using a 208 or 241 range box on the front if you want to use the parts you have on hand. Mating the two cases together will be much shorter than the divorced configuration.
EDIT: It's weird, but I could have sworn there were only like the 1st 2 responses up when I posted this. Obviously most of this is already obsolete...
You might look into the doubler setups using a 208 or 241 range box on the front if you want to use the parts you have on hand. Mating the two cases together will be much shorter than the divorced configuration.
EDIT: It's weird, but I could have sworn there were only like the 1st 2 responses up when I posted this. Obviously most of this is already obsolete...
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