see if I understand correctly, if you get the biggest cubic inches possible you can run a lower compression piston, still giving you the torque you want but able to run it on pump gas. Whereas if you wanted to do the same with a smaller cubic inch motor you gotta have more compression to get the same results.

also about quench, what is it and why is it good to have?*edit* i read why this is good - great article here on the site!