That cam pushes the Crane 901's to their limit IIRC. I think the max lift for those springs is .490". They coil bind at 1.10" That cam also has some real steep ramps for their seat pressure.
The recommended spring is a Lunati 73949 dual valve spring.
Dual Valve Spring W/ Damper - 1.440" O.D., .950" Coil Bind, 363 Lbs./In. Spring Rate (Qty: 1) - Lunati Power
Here is the Lunati 60402 cam card.
Cam Spec Card :: Lunati Power
Comp valve spring specs.
COMP Cams® - Specialty Valve Springs