Right.. you "can" use stock springs on a lot of things. Basically if coil bind isn't an issue and you don't float, then it's considered a "can do". I'm more on the side of safety when I say...I wouldn't. ZZP says the VS (valvetrain safe) cam is fine with stock springs. Yet a lot of guys I've known have broken springs with it, without going crazy on shift points. ZZP will always say installer error when anything breaks.

Springs are cheap insurance against dropping a valve.