Vibrate rearend
#11
also need to check driveshaft. mine has a 2/4 drop but i pieced mine together. belltech spindles in front with hotchkis 4" leaf pack out back. chose that for carrier bearing bracket and spacer under tranny mount. my driveshaft is perfectly flat and never had any vibration runnin up to 6500rpms and 135mph.
#15
Now get the angle of the driveshaft. This will tell us the angle of the driveshaft relative to the pinion. If your truck under load has enough axle wrap to put the pinion dead parallel with the driveshaft, you risk having a vibration.
#16
You mean measure the driveshaft with magnetic angle
#18
#19
#20
This is what I have on my Belltech 2/3 drop and it alleviated the vibration, http://www.belltech.com/alignmentkits.php






