Thank you for educating me about these engines. It seems almost unbelievable that the number one selling car in the US at the time had only four different size main bearings, no oil pressure fed to the rods from crank passages, no full flow oil filter and a lot of them had solid lifters as well. Not to mention connecting rod pinch bolts. And yet from what I understand stovebolts have a reputation for longevity. I am really appreciative for the chance to get to learn about these engines, having been born just a little too late to get this knowledge while growing up. Jay 6155