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Here's Why the Mustang's 5.0-Liter V-8 Is More Impressive Than Ferrari's V-12

It's all about the engine pressure.

© DW Burnett / PUPPYKNUCKLES   It's all about the BMEP.

By Brian Silvestro, Road & Track

It's tough to compare engines based on stats alone. Sure, your Camaro's V-8 might have more horsepower than your buddy's old M5, but that's not the entire story. If you want to get a true apples-to-apples comparison between engines, you have to calculate BMEP.

Brake Mean Effective Pressure (BMEP) is essentially the average pressure forcing the pistons inside your engine down that provides the measured torque output. There's a fair bit of math behind it, but the equation itself is pretty easy to grasp. Road & Track contributor Jason Fenske explains it well in his latest YouTube video.


In a way, BMEP is a fancier, more accurate way to calculate torque per liter. As Fenske points out later in the video, a naturally aspirated engine's BMEP number can be fairly compared against others, as long as they run on the same sort of fuel. Perhaps the most surprising result is Ford's 5.0-liter V-8, found in the current Mustang GT. It has a higher BMEP than even Ferrari's 6.2-liter V-12 in the 812 Superfast.

Of course, stuff gets complicated once you throw turbocharged engines into the mix. Since more air is being forced into the engine, the BMEP number is essentially multiplied. Fenske provides a few examples of how you can still compare them by factoring out the turbo, though, which is neat.

See more at: Road & Track

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Autos Magazine: Here's Why the Mustang's 5.0-Liter V-8 Is More Impressive Than Ferrari's V-12
Here's Why the Mustang's 5.0-Liter V-8 Is More Impressive Than Ferrari's V-12
It's all about the engine pressure.
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