Why because it says it’s 700 horsepower. Hmmm my sons stock crank 360 ran 6.54 with 13 year old Edelbrock heads. It’s full weight too. I hope the nitrous wasn’t used on this 6.30 passes.
No Looking at the specs on the engine it should make close to 700. Your Edelbrock and speedmaster stuff runs great, makes great power but the OP is asking for more hp than those heads are capable of.