Finished my SYE install today
Mine is a 97 NP242, I also just installed an 8.25 Rear.
I used a 3103-27CV Yoke, 3/8-16X1" Grade 8 Bolt, Grade 8 1/2" Washer and 3/8" Fender washer and Blue Lock-tight
I must have got a chessy Tap, because Tapping was extremely hard and slow going, Drilling was like cutting through hot butter.
I also installed *4 Shims in the rear-end, this sits me at *2.5 Driveshaft angle, not perfect but should be close enough.
I only have about 1/2" of compression available on the Driveshaft, so I think I may have it shortened another 1/2"
What do think about the Driveshaft lenght ?

 

You need more slip spline then that.

 

Cut at least another 1.5" off the output shaft and the same amount off the yoke.

 

Lets see:
That would leave me with 0" Spline engagement, actually that would
leave me with 0" of spline

 

Got it shortened 3/4"

 

Where did you get the 3103-27CV Yoke from?

 

I got it from http://www.highangledriveline.com/

Also these guys have it http://www.carolinadriveline.com/

 

im lost. why did he have to cut off anything? wasnt it fine when he first installed it??

 

There was only 1/2" of compression available in the shaft, if my suspension was compressed alot I was worried about the shaft
bottoming out.

 

why did you need a SYE? no info on lift size here.....

 

5" rear 4.5" front
Had alot of Driveline Vibration

 

The sye shaft is very long, is that normal? It seems everyone that I have seen has a stubby shaft to eliminate driveline issues.

 

It is only .25" longer than most