magnum camshaft and spring lift

i plan on putting a 5.2 cam and 1.7 rockers in my 5.9 magnum block the 5.2 has lift of .432 nd 5.9 .410. my question is what can i get away with, with stock heads/valves springs whats the max lift the spring will take i think that i should be fine with the 5.2 cam and 1.7's but i know alot of people say the stock springs dont have much room for extra lift