Look at the specs on this cam. Comp's Xtreme 4x4 low-to-midrange, 111 degree lobe center angle, short, almost stock duration. Power starts at 1000 rpm!

 

I was just stating that the lsa and durations is what determines the where the power is at through out he power band.. Just like the cam you posted*4x4)

 

yeah but the reason that cams power starts at 1000 rpm is because its an old flat tappet design with only 447/462 lift, so it needs the low 111 lsa to compensate the loss of upper rpm power that is limited by lift.

 

No, it is not the lsa that determines where the power is, it is the duration. You just said again that the lsa determines where the power is, and I just said again that it does not. The lsa determines how the power is, not where.
No, it is not. The lift has nothing to do with where the power is in the rpm range on this cam, it is not the limiting factor, it is the duration. The reason it has a narrow lsa is to concentrate the power in the target rpm area instead of spread the power across the entire rpm range.

 

Both the duration and lsa determine where the powerband will be, the primary factor being duration. Advance also plays a role...

 

 

Enlighting me on HOW.. How is power??? They both play a roll where the power is made...

 

Correct! They BOTH determine the finishing factor of the powerband

 

But the LSA concentrates the power either broad or wide. It's the duration that specifies where, high or low- the power is made, no............

 

That's kind of what I'm saying, except that I am trying to say they will peak at similar rpm, with different shape powerbands. In these fake graphs, the black lines represent a wide lsa and the red represent a narrow lsa. The first graph long duration cams, the second graph is short duration cams. These pics represent my thinking, tell me if I am wrong.