Mr Turk, I'm not trying to argue with anyone. I was always taught that the closer that you could get to 1.9 rod to stroke ratio the better. And I wanted to use a 6.250 or 6.300 rod. We used a 6.125. And bought a nice set of pistons. The engine made 841hp at almost 7500 rpm. It turned out well. It made 80 hp more that I thought it would. So end the end he told me not to worry about it and it worked out better than I thought is would. Maybe I mis-stated. Maybe I should have said it doesn't make much difference instead of it makes no difference.