Chrysler’s 6.2L supercharged Hemi in the Dodge Challenger SRT Hellcat is one of nearly 40 engines being evaluated as part of the 2015 Ward’s 10 Best Engines competition.

WardsAuto editors are evaluating the Hellcat V-8 in both the 2-door Challenger and 4-door Charger, although only the Challenger creeps in below the $60,000 base price cap.

These hellacious Dodges represent the most powerful cars we’ve ever tested for 10 Best Engines.

Every year, we anticipate the end of the horsepower war, and every year an automaker, generally from Detroit, keeps the muscle-car flame burning with an outlandish show of brute strength.

Two years ago, it was the Ford Shelby GT500 with a 5.8L supercharged V-8 that made 662 hp and edged out the 580-hp Chevrolet Camaro ZL1 for a spot on the Ward’s 10 Best Engines list.

This year, it’s Chrysler’s turn to hoist the heavyweight crown with a massively re-engineered Hemi “Hellcat” pushrod V-8 said to corral the cumulative force of 707 ponies. That’s 2,828 hooves pounding furiously across the prairie. Take cover immediately.

Honestly, the Hellcat is more docile than demonic when trotting around town. It’s perfectly content going to the grocery store or dropping the kids off at school.

The 8-speed automatic has a lot to do with this purring sensation. The Hellcat’s engine controller is programmed specifically to upshift as soon as possible. Cruising surface streets at 46 mph (74 km/h), the engine reaches eighth gear and feels downright sleepy, trundling along as low as 950 rpm – darn close to the 750-rpm idle speed.

Mind you, that idle speed is constant with the manual transmission and when the automatic transmission is in neutral. Shift the auto into drive, and the idle speed will fall to 680 rpm. The goal is to allow just enough combustion instability so the car will rumble and shake ever so slightly – in deference to carburetor-fueled muscle cars of the past.