- For optimal high-speed freeway use, the pinion angle should be < 3 deg. (nose down W.R.T. the driveshaft angle)

- For optimal drag race use, the pinion angle should be 5-7 degrees (nose down W.R.T. the driveshaft angle)

- Angles of > 3 degrees should be avoided for street use, because they will likely cause a noticeable vibration at some freeway speed.

If I set the pinion angle to say 3 degrees (nose down W.R.T. the driveshaft angle), what effect will the missing 2-4 degrees (from optimum) have on drag strip performance???

- Is this mostly an efficiency issue, i.e. minimal angle possible yields least losses. If this is so, any idea how what kind of losses (%) occur when you have a 2-4 degree error?

Or

- Is this mostly a traction issue, If this is so, how does pinion angle effect traction?