Originally Posted by techinspector1
Once you have the body attitude like you want it, install the motor with the carb pad level. This will normally equate to about a 3 degree down-bubble on your angle finder when faced off a crank pulley or transmission output shaft (less yoke). Install the rearend with the pinion at a 1-2 degree up-bubble. This will leave 1 or 2 degrees for the pinion to climb the ring gear under cruising power and result in a 0 differential of angle between the crankshaft centerline and the pinion centerline as viewed from the side of the vehicle.