Originally Posted by Nuck Chorris
I want this Lunati Cam for my P350: 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 at 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 in my 68 Le Mans 350 heads should be fine. Will 320 open pressure be too much? Or can I run the same cam with a weaker spring?
I've read different values from different sources, but would agree with the 280 lbs max.
I know this is old school stuff, but that doesn't mean it doesn't work.