will stock rockers work with larger springs?

I plan on using the rockers that Hughes sells. Ive heard good things about them. I knew the installed height sounded tall for a small block but thats what they told me. I sure hope there rockers will work. Bc i have a lot of money and even more time in these heads. I was just hoping I could run my hyd cam for now instead of the larger solid lift cam,but its not looking like I will be able to :(