Rocco, post #76, hate to break it to you pal but LCA & LSA are the same. So is LDA. Different nomenclature for the same thing.
All three refer to the angular measurement between the exh lobe & int lobe at max lobe lift.
"The last thing we will discuss is the difference between intake centerline and lobe separation angle. These two terms are often confused. Even though they have very similar names, they are very different and control different events in the engine."