Chevy’s First Big Block Updated for the 21st Century

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 () 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: