One of the best perks of working with supercars is calling out the manufacturers. Since the introduction of the McLaren 720S, they have only said the engine size was increased from 3.8 to 4.0-liters. This might seem insignificant until you are behind the wheel. Last week at the Nashville Auto Show we had a gorgeous 675LT Spider from Velocity Motorcars next to a new 720S from McLaren Philadelphia. After driving and comparing both, the 4.0-liter V8 seems to share very little with its predecessor.

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The McLaren 720S feels and sounds like a flat-plane V8. Something straight out of Italy, or the Mustang GT350 if you need an American example. This allows for a higher redline than a traditional cross-plane design. Anytime you can raise the engine's RPM, it creates more exhaust to spin the turbos. More boost means more power, but this innovation needed to be dialed back to leave room for future models. That is how Kanoo Performance and Dyno Spectrum pushed a customer's 720S into uncharted territory. Filmed at Bahrain's Grand Prix track and 1/4 mile front stretch, it crosses the top end at 146 mph. Is an 8-second McLaren in the near future? Tell us in the comments below and click the link to find a new 720S from our dealers.

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