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A 409 is a completely different engine from the typical chevy smallblock and bigblock. It is called the "W" head engine because the heads/valvecovers form a "W". It is a bigblock but was made before the bigblock we now all know. This engine started out as a 348 ci engine in 1958, and was then upped to a 409. They stopped making them after 1963. The highest hp 409 was 425 hp with dual 4s and a solid lifter cam.
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LIFE IS TOO SHORT TO WORRY ABOUT GOOD GAS MILEAGE
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Utinam logica falsa tuam philosophiam totam suffodiant!
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