driveshaft angles

Phreakish said

5 down relative the engine, or relative the ground? I think a lot of the confusion comes from exactly how the angle is measured.

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5 down relative to the ground. This is with the rear axle on jack stands, flipped upside down.....so essentially it's 5 degrees "UP" but of course ends up 5 down since it is flipped back upright and installed.