Topic: Adapter Ujoint?

[kidwithayj]

I'm swapping a Dana 300 case into my YJ, so I've been on the look out for a slip joint driveshaft. My first throught was to get a CJ driveshaft,but the local junkyard was no help, Jeeps are rare around here. There are a few on eBay that could be modified to the correct length, but the only one currently running would be $46 shipped, which isn't so bad.

Here's the option: Get the driveshaft for probably up to about $60
OR
my buddy threw a half ton full size Bronco rear shaft my way, but the u joints are a tad big. I know conversion joints are available for 1/2-3/4 ton and 3/4-1ton stuff, which I think are 1310, 1330, and 1350 respectively. However, I can't seem to find any adapter joints for this application, which I assume would be 1290-1310, right?

Both shafts will have to be shortened. It looks like the CJ shaft my be less of a hassle in the end, but what do you guys think?

[ratherbejeeping]

get a shaft with plain old 1310's and call it good.  conversion joints cost more and can be hard to find when you need to replace them

[kidwithayj]

Ok, this is apparently a little more complicated than I though. I'm finding a lot of confusing information on u joints. The yoke on the Dana 35 appears to be a 1310, so that end of the driveshaft should work. The yoke on the Dana 300, however, is smaller than a 1310, and apparently smaller than the NP231 transfer case. I can get a 1310 Dana 300 yoke for $50, but before that, does anyone know what size all of these u joints are for sure?

If I'm not crazy or just missing something it goes like this:

Dana 35 - 1310 yoke
DrvShft  - 1310 yoke
Dana 300 - 1290 yoke

I don't know if it's the stress of this swap or what, but this is seriously clouded in my head.

[ratherbejeeping]

the D35 is either a 1310 or 1330.  The D300 is a 1310