Bad vibration

The nose of the pinion should be the same number as the transmission axis but in the opposite direction. So if the pinion is pointing down at 2 degrees, the trans axis at the tail should be up 2 degrees. Therefore they will remain parallel.
This might work for a low-powered cruiser.
But if you start to put power through it, set up like that,and most especially with non-SS springs, the pinion will wrap up to the wrong side, from 2 to 5 or more degrees, depending on several factors.So for small blocks you can figure on adding about 1 degree per fifty horsepower,over 250, and a minimum of tranny plus 1 degree down. So a stock teener would be a minimum of tranny plus 1, and a 400 hp 360 might be tranny plus 3.This will get you a good starting point for non-SS springs. Shims are available.The pinion must always be nose down.Cuz, you know, it climbs up under pressure.