horsepower estimates.

If the heads are out of the box stock, and assuming the valve springs you used match the camshaft, not the ones that came on them - I'd say in the neighborhood of 400-425. The heads don't flow what Edelbrock claims unless you fix thier valve job, and you're not opening the valve far enough or for long enough, to make real use of the port. Figure a max flow of 200-205cfm at your cam's longer duration and about 70% lift figure. Double that is about max for that package assuming the machine work and assembly is at least average.