Probably a Dumb 318 Question
I know these are Chev but shows what similarly built engines that make the same ish peak hp what the under the curves differences could be like (the spread between the displacements is similar to 318/340/360). Obviously the 350 be the most streetable. But when comes to straight full out performance stall to shift points with proper stall and gearing the main curves aren't hugely different from one another and for the torque people when you factor stall and gearing they would have similar torque to the ground.
Out of the 3 I like the 327 power curve decent bottom great to top, be nice behind a 4 gear Chevy II :)