Not exactly..More like "depends on the smallest journal that has both the following: Enough strength for the job at hand, and a rod that can be procured that has a bearing to fit that size." In big blocks, we routinely use the big block chevy rod journal size in B block strokers, because a smaller diameter rod needs less clearancing arounf the oil pickup boss. I know some small block chevies running Honda rods and bearings, but things like side clearances and radiuses become critical. The less weight, the less frictional drag, and the less cost, the better. That last one ruins things for Mopars...lol. With good oil control, good materials, and very good machining, a typical V8 is way over built on the bottom end.dgc333 said