Rear driveshaft angle???

Hey there everyone Im just finishing up 2.5 BDS lift and a sm420/d20 to centered d44 diff... couple questions on drive shaft angles and whats worked for people here in past. First of all diff can be rotated I still need to weld up perches, cross member and spacing blocks open for tweaking!! So as it stands had rear shaft shorten 3inch or so its in. With jeep on ground no driver the degree on rear shaft in 20'. Trans is at 96' down and diff is at 96up.... they both in equal degrees thus no vibration??? Should final degree adjustment be with me in jeep? Should diff angle be 1 less degree less to compensate for tilt up of pinion once jeep moves under own power?
Also how have others dealt with the clutch cable bracket that used to attach to d18... Im planing on welding it to cross member to tension up cable! Any feedback would be helpful.
Thanks Jesse

 

Tom Woods might be a good place to call.

http://www.4xshaft.com/

 

So if I'm reading your post correctly you have 14 degree u-joint angles? Waaayyyyy too much. Typically 7 degree u-joint angles are considered maximum.

 

I have 4' lift with d18 and don't have anything close to those angles. The d18 drops the output yoke where the d20 does not.
I suspect your output yoke is 4' higher then mine. You could use a double cardan at the output of the transfer case and then point the pinion at that output.

 

Yes d18 has the advantage of rear pass output at lower plane! Looks like correct solution here is long splined shorty cv shaft.... Money money money! With case side and diff side right now adjustable thought unfortunately only 16" of d shaft length what would be the best comphermise of angles to try to keep vibration to minimal??
Thanks Jesse

Note looking at the d shaft now with 6' cases down and 6' diff up the angle does not look ridiculous to my eye!

 

I have always had my pinion angle and trans output angle (mainshaft) as close to the same as possible. I don't think I've ever had more than 1 or 2 degrees variance. Try to make both parallel if possible.
Otherwise, a double cardon shaft will be necessary. Approximately how long is your driveshaft ending up?