7 1/4 to 8 3/4 swap in A-body
You missed my point. Refer to this diagram.
If the pinion angle does not change, but you lengthen the front attachment point, then the driveshaft angle must change. Agree?
And since the pinion CL and driveshaft CL are at and angle to each other, what you add to one side is not exactly what you subtract from the other side. However if the angle is small enough, it probably doesn't matter. But on a short wheelbase car with a short driveshaft, and if the pinion downward angle is set high, then it may very well make a difference.
You missed my point. Refer to this diagram.
If the pinion angle does not change, but you lengthen the front attachment point, then the driveshaft angle must change. Agree?
And since the pinion CL and driveshaft CL are at and angle to each other, what you add to one side is not exactly what you subtract from the other side. However if the angle is small enough, it probably doesn't matter. But on a short wheelbase car with a short driveshaft, and if the pinion downward angle is set high, then it may very well make a difference.