Quote Originally Posted by Tom B. View Post
Valve overlap has a lot to do with the way it affects how an engine runs. If your position is to the contrary, I can only surmise you are less experienced than some of us that know better.
Valve overlap is a measurement in crankshaft degrees of how long the intake valve and exhaust valve are open at the same time. It is entirely controlled by the camshaft, and for most factory cams it's zero or very nearly. Let's get back to discussing what's relevant here. Overlap, whether in an LT or LS block, is not.