ohnoesaz

I've read about a 1pc driveshaft affecting pinion angle and how to correct it, like crazy al's awesome writeup. But I'm curious has anyone installed a 1pc driveshaft on a stock height car and then measured pinion angle? What did you see?

FREAKO

ok..I took a measurement...but just for reference...I didnt actually figure out the angle. I just wanted to see how things move.

I took the measurement from underneath the rear end housing, right behind the pinion flange (if you are at the front of the car, looking back, car on its on wheels). There is a flat spot, just behind the pinion flange on the rear end housing.

My car is stock height with a 1 piece drive shaft:

stock control arms= 4 degree upward angle
polyu LCA, stock UCA= 4.5 degree upward angle
polyu LCA and steeda adj UCA, set a 8.5 inches long= 3.6 degree upward angle

Like I said this is not the actual pinion angle, but just a reference angle. I have some decel driveline vibration at 85+mph and it seems it lessens with more upward angle. This weekend Im going to change the reference angle to about 5 or 5.5 degrees upward and see what happens to my vibration.