I have never seen this question before.

when trying to descide on a cam, can you fiqure out what you need by breaking down the cam numbers?


For example , Lift of a cam. If you go with a 509 as opposed to a 494, what would it do to the performance of an engine?

lobe seperation , how it effects Idle and compression.

So say you are build a Street racer. You would think it out and say, I want this thing to Idle so I should go with this lobe seperation. Now I
want , this much compression (so how much lift do I need to fill the cylinders) for best performance.

These questions may seegoofed up and I'm probably not explaining my self right, but the short of it can you break down all the specks to pick the cam.

anotherwards if one cam is:

509 lift , 294 duration and 108 lobe seperation

and the other is

494 lift, 284 duration and 112 lobe seperation

how are the different and how does it effect the running of the engine?