I want this Lunati Cam, Duration @ .050 (Int/Exh): 213/219 (Int/Exh): .455/.468 LSA/ICL: 112/108 RPM Range: 1000-5300. The whole Kit and Kaboodle has valve springs in it with seat pressure 120 and open pressure 330. I read on Crane's website that open seat pressure over 280 was too much for press in Studs. Lunati guy said press in Studs should be fine. Will 320 open pressure be too much? Or can I run the same cam with a weaker spring?
