Were all the reading taken with the vehicle on all 4 tires/suspension loaded?, meaning on the ground, or 4 post lift?....


2 degrees down on the tranny driveline angle, correct?, and 4.5 degrees on the pinion up (nose up), correct?...if so, you can either effect the tranny with some shims on the tail mount, to achieve a 0 baseline, either way your pinion needs to come down, if you leave the 2 degrees down on the tranny, your pinion should be 1-2 degrees down stationary reading, your pinion will rotate upward 2-4 degrees UNDER acceleration depending on your rear suspension/vehicle rake, which would theoretically raise your pinion UNDER acceleration to approx. 2 degrees up, putting it on the same parallel driveline angle as the transmission, you also need to calculate that your U joints have at least a 1-2 degree deflection for them to properly rotate...


mike