Stock springs will work fine for a .480 lift cam, thats with their smallest spring, 23 deg heads are available with three spring sizes: 1.25" single for cams up to .480" lift, 1.47" single for cams up to .540" lift, and 1.46" dual for cams up to .600" lift.


But if ya aint bought em yet, the twisted wedge heads work LOTS better, IMO