Enter the angle to the nearest ¼ degree along with the slope up or down. If all the control arms have factory bushings.
Quick Tech Driveline Diagnostics
How to calculate pinion angle. If the rearend is nose up and its angle is less than the angle of the driveshaft subtract the rearend angle from the driveshaft angle. Set pinion angle 3 degrees to 4 degrees downward. And the critical nature of pinion angle is such that its important in everything from a low rider to a race car to a lifted 44. Rises from front to rear of vehicle. These usually come with a magnetic base and are about 3 4 in diameter. Youll need a protractor accurate to ¼ degree spirit level or digital protractor and youll be measuring angles at various points from the transmission along the drivelines and back to the rear axles.
If the angle of the rearend is steeper than that of the driveshaft subtract the angle of the driveshaft from that of the rearend to see how much positive pinion angle you have. Pinion angle simply refers to the angle of the differentials pinion in relation to the driveshaft. Ideally the driveshaft angle should be 3 degrees or less and since we have already established that the output shaft of the transmission and the input shaft of the pinion must be parallel that. But ask 10 guys about optimal pinion angle and a lively debate will ensue. To measure it you will need an angle finder that has a 360degree face and uses gravity to pull the needle. Typically the pinion angle is measured between the pinion gear flange and the driveshaft as well as the transmission slip yoke and the driveshaft.
Gallery of How To Calculate Pinion Angle
