Big Block Edelbrock limitations.

This question is about my 64 Sport Fury with a 440. The engine is a .030 440 with RPM heads. I also have the RPM intake. What is the power limitations of these parts? I want to freshen up the engine, but curious how much power I can get from these parts I already have.

Typical guy bolting parts on an engine in his garage will end up with around 400 hp from a rebuilt 440 with Edelbrock heads. That might not sound like a lot but it is enough to push your car harder than it was designed to go. Early B body cars are dangerous with that level of power unless you've updated the suspension and brakes.