lobe separation angle

ir3333 said
so less valve overlap preserves compression on wide lsa
..better bottom end a little less high rpm capability?
opposite for a narrower lsa
..a little less dynamic compression,a bit more high rpm hp?

Yes, that's another way to look at it.

Wider LSA gives less overlap and better low end power...

Narrower LSA gives more overlap and more top end and sacrifice some bottom end...