pinion angle

I know this is an old thread but still useful. I am confused here

Drive Shaft Harmonics

If you read through this it says the transmission should be a degree or 2 down (compared to the ground with the assumption the car is on a level surface). Then measure the rear axel and it should be up a degree or two.. I thought this alignment should be only when the car is under acceleration, so in reality it should be pointing down a couple degrees so when it winds up it is a couple degrees up.