Enter the intake centerline (deg) and the exhaust centerline (deg) into the Calculator. The calculator will evaluate the Lobe Separation Angle. 

Lobe Separation Angle Formula

LSA = (IC + EC) / 2


  • LSA is the Lobe Separation Angle (degrees)
  • IC is the intake centerline (deg)
  • EC is the exhaust centerline (deg)

To calculate Lobe Separation Angle,

How to Calculate Lobe Separation Angle?

The following steps outline how to calculate the Lobe Separation Angle.

  1. First, determine the intake centerline (deg). 
  2. Next, determine the exhaust centerline (deg). 
  3. Next, gather the formula from above = LSA = (IC + EC) / 2.
  4. Finally, calculate the Lobe Separation Angle.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

intake centerline (deg) = 108

exhaust centerline (deg) = 112