In need of an education..340 vs 360.

We use to build the 340s with trw flat top pistons, brown racer cam 510 lift 488 der. mill heads 30thosands shaved intake torker 340, 780 dual pump dual feed ,with 4 speed and 488 dana. 10.4 qt mile. this combo makes 12.5 -1 compression. balanced right it will out its own head lights. now I race a 68 440 rb block in a 68 post a body