Originally Posted by roknroy
on the rod ratio, i called joe sherman many years ago, and one of the things he said were " rod ratio doesn't matter, i've made 600 hp with those chickensh@t 400 (5.65) rods". it sounds good on paper, but doesn't show up on the dyno.
It does matter in very finely tuned engines. It really affects cylinder filling and rotating weight among other things, but sometimes a shorter rod may be better. In all reality though it does not make enough difference on the street to worry about.