Quote: I've worked on plenty of lowered and backhalved cars with the engine/trans on stock mounts and angled down a couple of degrees or more front to rear. In order to get the pinion parallel with the trans, the pinion angle would have to go positive (definitely not acceptable).
Why is it definitely not acceptable? I don't understand exactly why the car would care...
If the pinion and output shaft are parallel... the angles HAVE to be the same. They could both be 2 degree's... or they might both be 10 degree's. But they are equal.
What the circle track article referenced above showed on the dyno that having both of them at 10 degree's to the driveshaft, is better then having the front at 10 degree's and the rear at 0.
