Correct way to set pinion angle
Wrong pinion angle can cause vibration at high speeds,break U-joint's,break driveshafts ect.
On my car I installed a BMR K-member which really affected pinion angle because the engine was raised alittle by there mounts.My stock TA was off by -8 degree's

So on to setting pinion angle.The point of setting it up is to find the rotating center of the driveshaft.It's fairly easy.
1- make sure the car is jacked up even and the car weight is on the tires.
2-Take out the driveshaft
3-put angle gauge on tranny output case(where seal is) write down angle
4-put angle gauge on tranny yoke.write down angle
5-Now you need to go over your readings.Here is some quick setups:
Tranny is 0 degree's = rear should be set to -2 to -4
Tranny is +2 degree's = rear should be set to -4 to -6
Tranny is -2 degree's = rear should be set to 0
So remember to balance the rotation angle of the shaft and get rid of all stress and vibration you need to zero out the angles.
On this site they have pictures of this
http://www.rosslertrans.com/


