mopar purple cam question

i just ordered a .484 purple cam for my 360 and was wondering if i have to get new valve springs or anything else?

also, if i need new valve springs, does anyone know what size i would need?

i found some elgin pro stock performance valve springs for cheap.
it says they will handle up to a .505 lift and are 1.494 diameter.
95# at 1.650
270# at 1.200
coil bind 1.085

will these work?
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