I've seen A LOT of posts about making HP with a 318-So why is it so ???

I've seen A LOT of posts about making HP with a 318-So why is it so ???

It’s all right there, no?

360+ .030
8:1cr
XE268 cam
Performer rpm
Ede 750
1-3/4 headers
Ootb SM heads(flow numbers are in with the head flow stuff)