new cam - some specs

I saw '452 head HP valve springs' in rebuild notes. rough est on HP improvement w/ cam?
Competition Cams 911-16 Single Valve Springs
Seat pressure: 122 lbs. @ 1.900 inch, Open Pressure: 309 lbs. @ 1.400 inch

• O.D.: 1.524 inch, I.D.: 1.110 inch
• Single valve springs with damper