" Chevy Small Block v8 is a little newer starting mid 1950's" ...and not used since 2003. Honestly, it's probably best to view an engine family like this as a

" Chevy Small Block v8 is a little newer starting mid 1950's" ...and not used since 2003. Honestly, it's probably best to view an engine family like this as a form factor, not a design. It isn't like there were any 1955 parts in a 2000 engine, but the interconnects are (mostly) the same. Generally, any 90 degree V8 with a cam in the block is going to be the 'same', designers have pretty much standardized on just a few layouts. An invariant SBC is like saying disk drives haven't evolved if they use the same mounting points and cabling/logic standards.