Well, I was wrong......whatever info I found when I Googled it was pretty far off.
253/253 @ .050", .563"/.563" lift. With the valve events listed, it's a 108 LSA, with 4° advance.
The advertised duration is measured at a funky .011" lift, so the 330° seems bigger than it really is, in comparison to other cams.
That's a nice street/strip camshaft for a 427. Will be pretty thumpy. Where it will peak will depend on the heads and intake.