All I know is that once upon a time, Fred told me that he starts with an 813 cam. Starts with one. There must be more to it. I don't know enough about it to say, just what he told me a while back... said it was better. Whatever it is, I guess it's the max you can run without the shim under bucket upgrade. I'm sure Carlos can chime in with all the technical aspects of it, that's not really my thing. I just get stuff that makes more power without really understanding what it does or why. And if it does, I'm a happy guy.
