Quote:

In an old 'Crane' catalogue I have here it states that going from a 1.5 rocker to a 1.6 rocker the engine will get the same benefit as going to a cam with 3-4 degrees more duration. I can't remember exactly how it was worded but that was pretty much what Crane said. And the other thing is the engine doesn't know or care what duration cam it has it only 'sees' the valve opening and closing, and if it sees more lift earlier like you'd get with a better rocker ratio then its happier!



Did they explain 'intensity,? , i guess not.