Now THAT is interesting... that 23-26 degrees extra duration for the .004" vs .008" duration is pretty important. Which number is best for DCR - .004" or .006" lift at closing - is something that has to be guessed at... and it changes with RPM I am sure, being that we are wanting to know when the cylinder 'effectively' stops leaking any significant pressure.
I always wondered about the symmetry opening vs closing, and always assumed they were equal. I am a bit confused as to the reference to the '440 cam', with all that assymetrical closing vs opening ramp. Which cam is that?
