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American vehicle manufactures have always played "the numbers game" when rating their engines. The higher the number was the more powerful the engine was. The problem was the numbers didn't reflect the actual power delivered to the pavement and that's all that really matters. I ran across this interesting tech article this morning and thought I'd share it with you C3 folks:


Now days the average performance car engine can put more power to the pavement than the 1960 muscle car engines could deliver to their flywheels because of advances in cylinder head designs and fuel management systems. When the 1957 fuel injected 283's made one horsepower per cubic inch it was considered a milestone but now days every engine can easily exceed that. A good example would be the naturally aspirated 6.2 liter (378 cubic inch) AMG's that pump out 457 hp. With their 4 valves per cylinder and double overhead cams they can be spun to 7500 rpm with ease because of their superior breathing.
 
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