7290 vs 1350 u joints?

[DrEamer]

As I continue my build, these choices keep coming up. So as the title says, is there any advantage of one over the other? The only advantage for me with the 7290 is that the donor vehicle that I used had a 7290 transmission slip yoke. That said, I may want to replace the yoke just based on the fact that it has 150k miles in a D250 which was not treated nicely. It's kind of cheap insurance even though it is not a high wear item.

 

[Darter6]

Depends on what you plan on putting in front of it as far as power goes.There is nothing wrong with sticking with the 7290 unless the budget allows for the 1350 up grade.Now if I was going to have a 700 HP monster and needed to have a new driveshaft made,then I would go with all new and the 1350 setup.
P.S. I run 7260 shaft&joints behind my 472 Hemi 65 Belvedere.I don't race it and have no problems with it after 16 years.

 

[TurboGLH]

With the trouble that can come from a broken driveshaft and a 727, I'm switching to a 1350 over the winter. Even with all the good parts that prevent an explosion when you over-run a sprag, you still need to pull the trans and disassemble it to check the sprag itself out. Too much work for the savings.

 

[DrEamer]

Thanks for the replies, it does not cost anymore for one over the other since I would be buying either new. Even though I will most likely never mount a set of slicks on my car, it can't hurt to have better/bigger parts on it.

 

[fishy68]

The 1350 is a much larger/beefier U--joint so the advantage is strength. It also has a disadvantage in rotating weight. As Darter6 says it depends on how much power your putting through it as to whether or not you need a 1350 U-joint. I've been running the smallest 7260 U-joint in my Cuda for about 5 years behind a 408 that pushes it to high 11's and I've been rough on it (gone through 3 sets of drag radials) yet it hasn't failed. I planned on upgrading a long time ago but haven't had the funds