This doesn't change the overlap period. Are you going to try to tell everyone that overlap has no effect on idle vacuum now as well?
No we are talking about two cams with completely different overlap values to each other when you consider how much valve lift is occuring during that overlap period. I'm not saying I can't make either cam idle and be streetable, but the smaller duration cam with the wider lobe separation will idle better and be more streetable every single time. You're the one saying it won't.
I have explained EXACTLY why you can get a 255 solid cam on 105LSA to idle similarly to much smaller hydraulic cam. VALVE LASH. IT'S A THING.
anything over 108 lobe separation is no good for a passenger car? In that case maybe you should write a letter to all the major camshaft companies, as well as all vehicle manufacturers telling them they should never run a wider LSA than 108. Clearly you must know something they don't.
I would say that 99% of all aftermarket performance camshafts fall between 107 and 114 LSA because that's what suits most applications best. not because of anyone's marketing campaign or some kinda brainwashing by comp's evil henchmen. if you want something unusual, you might have to pay a bit more and go billet if you think the gains will be worth the expense.
What's there to misunderstand or abuse?? it's a graph which shows a camshaft's lift for both lobes relative to crank degrees of rotation. my picture was just an example generateed by a computer. but when ordering a custom camshaft you can get these created using an actual camshaft's lift values throughout it's full rotation, with the numerical values for reference. It's literally telling you EVERYTHING about the size and shape of your camshaft.
No need to apologize, It really doesn't bother me. However, i have no pet theories. What i do have is a modest understanding of camshaft theory.
I didn't say it will never work, i said it wouldn't make the same idle vacuum as the much smaller cam which OP is already using.
Keep fighting the good fight, brother. They may take our lives, but they can NEVER take our narrow lobe separation angles!
View attachment 1714997122
