Nope. As I said, you can build two engines with different bore and stroke, but the same displacement, and they will make mirror images in the power curve. If i

Nope. As I said, you can build two engines with different bore and stroke, but the same displacement, and they will make mirror images in the power curve. If it was such and advantage, wouldn't all performance engines have much longer stroke? The newest Corvette ZR1 makes 1064hp from a 4.1 inch bore and 3.1 stroke. How much power are they leaving on the table by not making it a larger stroke than bore like many inline 6's? (Hint: inline sixes don't have larger stroke than bore for "torque") Any change in power from a larger stroke is due to the larger displacement. It goes up with a percentage of the increase. Nothing to do with the leverage of the longer stroke. By the way if you work the math out on that, it's not significant. And there are many other things that go into the losses of and engine turning. It's such a useless micro optimization, like speeding up a function that takes two seconds to run by shortening it by only a couple instructions.