Cylinder Head Porting and Power Production

Although rumble and others bring up very good points I can't help but being impressed by the overall performance of a stock style la head, to me it does bring to light that a lot of people consider these heads to be nothing more than door stops and obsolete when in fact the overall performance capabilities are impressive for a 50+-year-old small block head design. I don't think there's any arguing that there are improved designs available and working with cast iron heads is a lot of work & heavy but I love the fact that you can still pump out (very) respectable numbers out of those old heads!