I'm not in that camp more cubes the better. A 470 will out accelerate a 511 due to friction. Longer stroke, faster piston speed etc. I had a similar deal with my sb. I wanted a 3.79 stroke and everyone said more cubes the better. So I went 4". I have seen more bad ass 3.79 stroke combos than 4". I think the shorter strokes make it easier to get to you goal. Not saying longer strokes dont work, do get me wrong. This is just my opinion and what I have seen.