How does cid make power?

Cheapsunglasses said
Goes back to what I said, and many others. Engines are air pumps, they need to breathe, yes cubic inches is factor. But you can do anything you want as far as cubic inches goes, any manifold or header. Any intake, or power adder. If you ignore your cylinder heads, you’re not using your full potential, and frankly wasting your time.

The old way of thinking was bigger is better. Now through research, all it takes is a good set of heads, a good intake, a good cam, and a good set of headers, and you can have a pretty potent engine.

Weather you like him or not, Freiberger really saved the car hobby.

As you stated, a good set of heads is a key part of the combination. Good heads does not necessarily mean huge port volume. Air velocity and the resulting port energy are values to be desired when looking for heads. A head with 10 to 15cc smaller volume and higher velocity and port energy will probably make more torque and provide a more useable engine. This still pertains to a race head where volume is likely going to aid at high RPM, but even there port energy rules.