Pinion angle simply refers to the angle of the differentials pinion in relation to the driveshaft. But ask 10 guys about optimal pinion angle and a lively debate will ensue. To get a range of opinions ...

This story was originally published online December 14, 2017, and has been edited and reformatted by Tim Bernsau. Building a hot rod means working all the angles, and there are plenty of angles to ...

Have you recently had your 4x4 lifted and are suffering from a harmonic oscillation that can both be felt and heard? Have you rebalanced your tires or swapped in newly balanced driveshafts only to ...