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John Scott · 01-16-2015, 06:00 PM

I have a street/strip Nova with 355 SBC...GM casting cylinder heads. Cam is 0.480/0.480 and about 280-282 advertised duration. I don't know anything else about the cam. I'm wondering what kind of spring pressures (seat and open) do I need when selecting new valve springs. It is at about 6000 rpm crossing the line.

Thanks,
John

01-16-2015, 06:00 PM	#1
John Scott Junior Member Join Date: Apr 2009 Location: New Brunswick, Canada Posts: 69 Likes: 1 Liked 0 Times in 0 Posts	Valve Springs I have a street/strip Nova with 355 SBC...GM casting cylinder heads. Cam is 0.480/0.480 and about 280-282 advertised duration. I don't know anything else about the cam. I'm wondering what kind of spring pressures (seat and open) do I need when selecting new valve springs. It is at about 6000 rpm crossing the line. Thanks, John Last edited by John Scott; 01-17-2015 at 10:47 AM.