Now let's make that same engine 400 CI. IF we got to the new CI by a longer stroke, wouldn't you need a longer duration cam to take advantage of the longer stroke?
wouldn't the piston travel still fill the cylinder at the same rate?
Ya I think since the longer stroke would be operating at a lower rpm but the piston has to travel further than a the short stroke but higher rpm both would probably need similar time (duration) to fill the cylinders during each stroke.