Shortly after the earth cooled, modern man started modifying Flathead V-8 engines with upgraded cylinder heads, intakes, and camshafts. Famous names we know of today, such as Edelbrock, Offenhauser, ...

It's obvious that hot rod parts have evolved tremendously over the past 70 years or so. One of the best examples is the small-block Chevy cylinder head. A scant 30 years ago, the iron "fuelie" casting ...