Chevy's 409 was famous in its day. And as part of the W Series engine family it was also Chevrolet's first big block. But a fatal design flaw cut its lifespan really short. Now Automotive Specialists (https://automotivespecialists.com) is updating this engine that first saw the light of day back in 1958 and bringing it up to spec for the 21st century with some really cool updates.

Here's a link to the more stock-style 409 build from a few years back for comparison:    • 409 Chevy Engine Build