[cpd004]

Had a little bit of time to try again. The car is on its wheels which are on the 2x4 cribbing that are homemade and then those on rolling dollies. The car has been bounced around on these to hopefully settle it as much as possible. It appears as though it's at ride height but elevated.

Took out the shims at the back between the pinion mount and torque arm.

So this is what I am seeing:

At the crank hub = 3.0 degrees down

Driveshaft = 0.9 degrees up

Center section = 0.9 degrees up

If I'm understanding this correctly now, 3.0 + 0.9 = 3.9 for working angle 1

0.9 - 0.9 = 0.0 for angle 2

So this is far from their 1.5 to 2 degree no noise/vibration suggestion. The zero at the rear is not acceptable at all. The rear can be rotated.

The options I have are to go lower at the trans increasing the downward slope and/or going up at the pinion. A lot would have to be reworked to lift the trans and reduce the slope there.

Maybe I'm misunderstanding something.

The reason I began looking into this is that I have a weird harmonic sound that seems like it comes from the driveshaft off throttle as it coasts down while testing it. The center section builder immediately asked about driveline angles. So looking them over is where I am.