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There are plenty of high-powered, performance-oriented LS engines out there. But what about the LS4? How powerful is that particular iteration?

When Lexus introduced the LS 430, its engine was an improvement on the one in the brand's pioneering LS 400, offering both more horsepower and more torque.

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Stock Junkyard LS. Richard Holdener Holdener took a stock, flat-top 5.3-liter LS and put it on an engine dyno to find a baseline power rating.

The LS4 V8 has 303 hp and 329 lb-ft of torque as standard. As with other LS engines, it was made by General Motors and used in the automaker's cars.

This engine only delivers its peak power at 7,000 rpm, which means you have to rev the nuts off of it to get anywhere, unlike a torque-filled LS V8.

The large stroke meant the hp numbers started to fall off after 6,300 rpm. Still, the displacement created massive amounts of torque across the entire pull, with over 500 lb-ft as low as 3,600 rpm!