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Electric motors bring the promise of incredible power, which is already being realized with the 1,000 hp Tesla Model S Plaid and GMC Hummer EV, but good old internal combustion engines still have a lot of life left in them.

That's especially true of the classic American V8, which is being pushed to new limits by the big three automakers from Detroit, even as they begin their transitions to zero-emissions motors.

Here's a look at a few of the most-powerful engines you can get in the USA today:

Dodge Direct Connection Hellephant A170

Hellephant

The 6.2-liter Hellephant is rated at 1,100 hp. (Dodge)

The Hellephant A170 is a supercharged 6.2-liter V8 that's been tuned to run on high octane E85 fuel that allows it to produce 1,100 hp. It's legal for use in custom street cars based on models built before 1976. Pricing will be announced in 2023.

Chevrolet Performance ZZ632/1000

The ZZ632/1000 is the most powerful naturally aspirated V8.

The ZZ632/1000 is the most powerful naturally aspirated V8. (Chevrolet)

The Chevrolet Performance 632-cubic-inch ZZ632/1000 is a new crate motor designed primarily for drag racers that's not only the biggest big block Chevy has ever built, but at 1004 hp it's also the most powerful naturally aspirated V8, even when the $37758.72 unit is running on 93-octane pump gas.

1,004 HP CHEVROLET COPO CAMARO IS THE MOST POWERFUL MUSCLE CAR EVER

Dodge Direct Connection Hellephant

Speedkore put the Hellephant into Kevin Hart's custom 1970 Dodge Charger.

Speedkore put the Hellephant into Kevin Hart's custom 1970 Dodge Charger. (Speedkore)

The $29,995 Hellephant is the original 426 cubic-inch 1,000 hp crate motor version of the supercharged Hellcat V8 found in the Dodge Challenger.

Dodge Hellcat/Direct Connection Hellcrate

The Hellcrate V8 is a standalone version of the engine in the Dodge Challenger Super Stock.

The Hellcrate V8 is a standalone version of the engine in the Dodge Challenger Super Stock. (Dodge)

The $84,060 Dodge Challenger SRT Super Stock is the most powerful muscle car on sale today courtesy of its 807 hp supercharged 6.2-liter Hellcat V8, which can also be purchased a la carte from Mopar as the Hellcrate for $20,215.

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Ford Mustang Shelby GT500 ‘Predator’ V8

Ford's Predator V8 is the most powerful engine it has ever offered in a street legal car.

Ford's Predator V8 is the most powerful engine it has ever offered in a street legal car. (Ford)

The $74,095 Mustang Shelby GT500 is the most potent Ford ever built and it's 760 hp supercharged 5.2-liter ‘Predator’ V8 is available without the rest of the car for $25,995.

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Chevrolet ZZ572/720R

The ZZ572/720R offers 727 hp in a naturally aspirated package.

The ZZ572/720R offers 727 hp in a naturally aspirated package. (Chevrolet)

The 727 hp 572 cubic-inch ZZ527/720R was pretty impressive until the ZZ632/1000 showed up. (Still is!)