.484 purple shaft grind info.

He kinda makes a similar reference in the MP engine manual. Still though, it is clear as a bell that MP uses one method of duration @ .050" and everybody else another. That's why you really need to do your homework when comparing. Because more likely than not what will happen is, you will end up getting a cam that you thought was better than a purple shaft that really ain't. The way I understand Larry Shepard, anything under .600 lift is "mild" and should not use .050" as a reference. At least, that's always been how I conveyed it.