Sterling 10.5 into E350 pinyon angle

[MadChad]

First step is to get a sterling 10.5 rear axle into the E350 and was wondering if I could use the current spring pad angle, or does this require some refinements.
I'm sure I could get the answer with a single phone call but thought I'd use the fourm instead.
The plan is to have it with the stock springs for now and then later add the 6" lift springs. I will be using UJOINT spring pad.

 

[Jody Treadway]

If you are using a standard non-CV (non-double cardan) driveshaft, you'll want the pinion angle about 2* below the transfer case output shaft angle. This puts the output shaft and the pinion shaft nearly parallel with one another.
If you are using a a CV/ double cardan jointed shaft, you'll want the pinion rotated up, pointing about 2* below the t case output shaft.

Make sense?

 

[MadChad]

Thank you for the reply Jody,
Now if I plan to use an nv271 but don't have it yet will the angle change from the current angle of the tail shaft(up or down)?The driveshaft is a single so it will be 2* below.

 

[ujoint]

It's gonna be tricky since you're doing the axle 1st. I would set it the same as the factory axle and run a CV once the t-case is installed. This way e-thing is good while you're still 2wd. The only downfall to what you're doing is having to modify the driveshaft twice.

 

[MadChad]

Oops big time laymen here, the drive shaft will need to be modified to accept the sterling?Also is there any advantage running standard over cv.
Thank you for the reply.

 

[Wood Kutter]

Does the driveshaft actually need to be shortened for him to keep 2wd for now ? They do make Hybrid U-joints that are 2 different sizes. 1 pair of spindles is 1 size/ dia. and the other pair is a different size/ dia.

 

[MadChad]

It might be wise for me to wait and do all at once. Just thought I'd get the sterling in before we take our Yellowstone trip.

 

[ujoint]

The flange is different between the D60/Sterling.

 

[nely]

Not to take over the thread......But

For those who want the info for later, like i will be needing,

What is the proper pinion angle for the sterling rearend after the 4x4 has been installed?

 

[MadChad]

Good question Nely, maybe I should stick to that because its going to be a 4x4.

 

[Wood Kutter]

@Ujoint, do you know what I mean by the Hybrid U-joints ? The driveshaft end could be like a 1310 & the flange could be a 1350. The Hybrid is like the 2 different Ujoints put together. I have used them before when changing rear ends without modifying the driveshaft.

 

[Wood Kutter]

Like this ............. http://www.amazon.com/STRANGE-U1646-Conversion-U-joint-1310/dp/B003VS6QMO

 

[MadChad]

WK that would be cool. I'd carry a spare because I don't think auto zone would have one on the shelf. Great idea.

 

[ujoint]

Not to take over the thread......But

For those who want the info for later, like i will be needing,

What is the proper pinion angle for the sterling rearend after the 4x4 has been installed?

I set the pinion angle the same as stock for the 4 & 6" kits. Anything higher & I use the formula that Jody posted.

@Ujoint, do you know what I mean by the Hybrid U-joints ? The driveshaft end could be like a 1310 & the flange could be a 1350. The Hybrid is like the 2 different Ujoints put together. I have used them before when changing rear ends without modifying the driveshaft.

Yep, I've seen them. This may work if he has a flange yoke that will fit the Sterling. Worst case here is a new ujoint & flange at the rear axle.