My best advice is to use the spring recommended by the cam grinder for that particular cam. Find out the particulars from the cam grinder, then call Edelbrock and ask if they can supply the exact specs on their installed springs. If they can't, then order the heads less springs and install the recommended springs yourself.

You're going to use a Comp? I thought you'd use the Crower that I dyno'd for you. It turned out so sweet with better low end torque.