This is what makes the supercharged 6.2-liter Hemi SRT Hellcat V8 engine so special

If there was ever such a thing as preaching to the choir, it’s trying to convince a bona fide gearhead that the Hellcat is the most powerful production V8 ever made. Named after the Grumman F6F Hellcat WWII fighter jet, the Hellcat engine should live up to expectations. It can race from 0 to 100 mph in 3.6 seconds and drain at 320 mph. In case you missed it, we said 0 to 100 in 3.6 seconds, not 0 to 60.


Dodge’s The Hellcat engine replicates its namesake’s stubbornness by delivering a dust-shredding 707 horsepower and 650 lb-ft of torque, powered by a 6.2-liter supercharged Hemi V8 engine. Like the American fighter jet, after which this engine was named, it was known for its IHI supercharger.

No doubt the supercharged 6.2-liter Hemi SRT Hellcat is the mill for people who crave speed. Behind the wheel of a Hellcat powered car, experience a well-rounded American performance muscle car thanks to the satisfying combination of power and handling to match.

Related: Here’s What We Love About The 2023 Dodge Challenger SRT Hellcat


The Dodge Hellcat Supercharged Hemi V8 engine is the heart and soul of a demon

Through Dodge

One of the major highlights of a year ravaged and mutilated by the novel coronavirus was Mopar’s November 2020 announcement of an 807 horsepower Hellcrate Redeye 6.2-liter supercharged V8 crate engine, available for $21,807.

“With the addition of this new supercharged Hemi, Mopar now offers five Hemi crate engines ranging from 375 to 1,000 horsepower,” said Mark Bosanac, head of Mopar Service, Parts and Customer Care for FCA – North America. “All Mopar crate motors are quality tested and factory backed to deliver proven performance to our enthusiasts.”

It was the remarkable opportunity of a heart transplant by inserting the heartbeat of the legendary Dodge Challenger SRT Demon into the car, truck or SUV you are building. In other words, the crate engine allowed you to give your project the 807 horsepower heart and soul of the Challenger SRT Demon.

Before then, Mopar had never offered builders and enthusiasts a more powerful engine for a production muscle car. Yes, the Hellephant is more beastly, but remember that the 1,000 horsepower Hellephant 426 Supercharged Mopar crate Hemi engine is not yet a production engine. The Hellephant is just too wild to put in a production car, but you can certainly buy one and put it in your garage project.

When pressed with 91-octane pump gas, the 6.2-liter Supercharged Hemi V8 crate engine is a force to be reckoned with, with 807 horses and 717 lb-ft of torque. Mopar offered the Hellcrate Redeye 6.2-liter supercharged Hemi V8 crate engine with a supercharger, along with a throttle body, front oil pan, coil packs, fuel injectors, water pump and flex plate. Naturally, the power plant comes with a detailed installation manual.

The power and performance of the supercharged 6.2-liter Hemi SRT Hellcat V8

6.2-liter Hemi SRT Hellcat Supercharged V8
Via Dodge Garage

On the SRT Hellcat, the supercharged 6.2-liter Hemi V8 engine has a factory compression ratio of 9.5:1 to generate 707 horsepower and 717 lb-ft of torque at 6,000 rpm. Regularly, the SRT Hellcat Redeye produces an impressive 797 horses at 6,300 rpm, while the Super Stock puts out 807 horsepower at 6,400 rpm. At the top of the hunt is the SRT Demon, with 808 horsepower and 840 lb-ft of torque at 6,300 rpm.

Notably, Dodge offered the 6.2-liter Hemi V8 in addition to the 6.4-liter SRT Hemi V8. You’ve seen, heard and experienced it on the 2015 Dodge Charger and on the Challenger, and later on the 475 hp Jeep Grand Cherokee SRT with 470 lb-ft of torque.

Contrary to widespread rumors at the time, the Hemi SRT Hellcat V8 did not feature Chrysler’s multi-cylinder engine technology known as MDS (Multi-Displacement System), a fuel-saving cylinder deactivation technology that saves up to 20% fuel.

As SRT powertrain chief Chris Cowland explained, by reducing the stroke, the automaker reduced the displacement from 6.4 to 6.2 liters to further strengthen the camshaft. Dodge pairs the Hemi Hellcat with a manual transmission in the Challenger and an eight-speed automatic in the Challenger and Charger.

Related: Dodge SRT Demon Ute Puts the Holden Maloo to Shame

The Hellcat is fast and not for the faint hearted

Dodge Charger SRT Hellcat Redeye
Cleverness

If “faint of heart” isn’t in your dictionary, the Hellcat offers an unforgettable driving experience, and we’re not just talking about the furtive looks of other road users. Thinking about how fast the Hellcat jumps reminds us of the Dodge Charger Daytona, Mopar’s fastest four-seater that jumped over the 200 mph threshold in 1970. What powered the Charger Daytona? The memorable 426 Hemi V8.

A few years ago, AllPar forum members discussed the modern Challenger’s ability to beat Daytona’s record. A forum member with the handle “AutoTechnician” wrote: “The power required to overcome air resistance increases with the cube of speed (e.g. 20 mph requires eight times as much force as 10 mph to push through the air Factor in mechanical losses, rolling resistance, etc… and you soon need well over 600 horsepower at the crankshaft to do 200 mph.”

We liked to think that the nimble eight-speed automatic and ZF axle would help the SRT achieve that goal by reducing said parasitic losses. At the time, the 638-horsepower ZR1 was capable of 205 mph, while the Hellcat Challenger touched 202 mph in testing, but you wouldn’t expect the production versions to reach a similar top speed.

Flash forward to today, Dodge proudly announced the 2022 Dodge Challenger SRT Hellcat Redeye Widebody as “the fastest GT production car,” with a top speed of 203 mph “while staying fast off the line.” In other words, the Hemi-powered Hellcat Redeye Widebody has the fastest top speed of any production muscle car.

The Hellcat will die, but the Hellcrate is still ours

Hellcat engine
Via Guide Auto

It was still early last year when Dodge CEO Tim Kuniskis admitted CNBC that time was running out for the beloved supercharged Hellcat V8 engine, with the whine of power plants replacing the roar of superchargers. “I will have this car, this platform, this powertrain as we know it until the end of ’23… There are still two years to buy a Hellcat, then it will be a thing of the past,” Kuniskis said.

Dodge closes the chapter with six ‘Last Call’ special Hellcat models, then the all-electric Banshee takes over with a promise of an 800-volt eMuscle powertrain. However, while the Hellcat badge will die after 2023, we expect the automaker’s SRT division to continue building and selling the Hellcrate to hotrodders and enthusiasts alike. Why not?

Sources: Allpar, Dodge, Stellantis, Dodge Garage, CNBC, Chrysler Factory Plans

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