Richard, there is a reason why no one (other than GM) makes an aftermarket camshaft with less than .500" lift. This isn't my grand dad's small block Chevy. Seriously, check out Crane, Comp Cams and GMPP. On these newer engines, too much lift starts at .580".

The BDS site is looking at Gen I and Gen II SBC's and this engine has zero in common with those engines and they don't even address this engine family. It's not a relevant site to this discussion.