Cylinder pressure? Help.

Blue - Don't be too worried if they die. It will come up again, and at this site especially, you can debate and disagree and it's all respectful. Well, maybe accept for one or two...lol. And they serve to differentiate between class and lack of...lol.

Fishy - What I meant was the MP cams, back in the 70s, had large durations which demanded faster rates of lift for thier time. They are not nearly as fast as the XE line lobes. But, rate of lift is important, but it's easy to make it a holy grail and create issues. (IE Hughe's mixed reputation a few years ago because they were so fast, everything that most engine builders and assemblers took for granted made the cams go flat. Not the cams' fault, but they pushed the limits to where it sorted out the men and the boys. Similar to some peoples' issues with Comp and the XEs. On the Desktop, the old one would take you lift and duration (total, not even @.050...lol) and factored in the average rate of lift (not manufacturer specific) as a straight line and figured it off that. Draw a straight line from the base line to the tip of a typical lobe. It isn't the same shape as a straight line. And even in types of hydraulic lobes, that shape varies. It makes a huge difference where that lift comes in in relation to crank/piston position in terms of cylinder filling and torque peak. It still averages. They are fun to play with. However I think trying to choose between relatively similar profiles in an engine will be an exercise in data entry, not really chrun out usefull info.