That's what I don't like about Erson cams... Too much advertised duration for a given duration @ .050" = very slow ramp speed which leads to too low of vacuum at idle... View attachment 1715410024
I agree it looks like that - but really don't know until we know where the advertised comes from, and how the ramps are shaped.
That what Wyrmrider is often posting about.
And why we can't measure the Chrysler durations because they're done on the drawings - but we were able to makes some estimates that made the Dynomation results line up much closer to known dyno curves.