
12-03-2007, 10:51 AM
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CC Member
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Join Date: May 2000
Location: Northern VA,
VA
Cobra Make, Engine: Classic Roadsters
Posts: 2,765
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Not Ranked
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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