The Physics Of Redline: Secrets of Sky-High Engine Speeds

The term "Redline" technically refers only to the red hashmarks on a tachometer, but it is synonymous with maximum engine speed. The 9000-rpm Porsche 911 GT3 and Ferraris prove that, even if redlines are dropping with the proliferation of  turbocharged and diesel engines, there are still some high achievers out there. In the above illustration of the 458 Italia's V-8, we've highlighted the factors that determine how fast an engine can spin. READ MORE ›› from Car and Driver Blog http://blog.caranddriver.com

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