How does cid make power?

The longer the stroke and the bigger the bore the engine is capable of pulling in more air and fuel at any given rpm. Thus, making more power.


Not exactly, but close. The longer stroke MAY be capable of pulling more air, but if you don’t consider RPM (time) and if the architecture of the engine in question is capable of supporting an induction system to feed it.

In most cases, we are dealing with early 1960’s architecture and they were never designed for huge displacement and RPM.