redoing rear driveshaft

[daimok]

after my blazer (83) spit out the guts to the 10 bolt rear , i went to a 1 ton eaton monster , put in the napa conversion ujoint , well , the drive shaft fit onto the transfer output shaft but i bet there isnt even a inch of contact. so my question is , with a 4 inch lift and knowing i have to retube the driveshaft , how much should the yolk stick out of the transfer case. i bet i have 4 inchs of the yolk shaft showing.

thanks
daimok

 

[heavy4x4]

Well, hard to say really, but your suspension should be able to cycle fully (both up and down) without your shaft getting jammed into the t-case or falling out. Don't know what kind of suspension you're running but you may need to go with a fixed yoke and long travel slip-joint shaft.
You may want to send "drivelineman" a PM with this question, and then have him make you a custom 1-ton CV shaft. /forums/images/graemlins/laugh.gif

 

[daimok]

stock rear leaf springs , 4 inch blocks

 

[heavy4x4]

You shouldn't have too much travel coming out of those stock rear springs. I've got 4" rear springs and a stock shaft - there's probably about 2-2.5" of slip-yoke spline contact and I haven't had any problems yet (knock on wood). /forums/images/graemlins/smirk.gif