Dodge Challenger SRT Demon 170: 764kW, 8.91-second quarter-mile beast unveiled

If you thought the Dodge Challenger SRT Demon couldn't get wilder, think again.

In a final salute to its classic V8-powered muscle cars, the 2024 Dodge Challenger SRT Demon 170 is the world's most powerful and fastest.

Dodge claims it will complete the 0-60mph (0-97km/h) sprint in just 1.33 seconds (with roll-out, according to US media) – faster than the Bugatti Chiron's 2.3-second claim – with record-breaking G-force acceleration at 2.004 gs.

It is powered by an overhauled 6.2-litre supercharged V8 producing 764kW and 1281Nm on E85 ethanol fuel.

WATCH: Dodge Challenger SRT Demon 170 at the drag strip

It will complete the quarter-mile (402-metre) sprint in 8.91 seconds at 151.17mph (243km/h), requiring a parachute and a roll-cage to launch at a National Hot Rod Association-regulated track.

The overhauled engine is derived from the original SRT Demon and "shares DNA" with the cast-iron Hellephant C170 crate engine, with several improvements.

It is fitted with a 3.0-litre supercharger with 40 per cent more boost pressure (21.3 v 15.3 psi) than the Challenger SRT Hellcat Redeye Widebody, while the supercharger pulley delivers 14 per cent more overdrive and an updated 2.68 drive ratio.

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Other improvements include; a larger diameter throttle body, nitride-covered intake valves, high-strength connecting rods, and upgraded spark plugs, valve guides and seat materials for ethanol compatibility.

Dodge claims the high-flow fuel injectors can provide 621 litres per hour, which it notes is "more than the average U.S. shower head." Yikes.

Gas-guzzler indeed, with the United States federal 'gas-guzzler tax' and destination fees pushing its US$96,666 (AU$144,000) list price to US$100,361 (AU$150,000).

Under the skin, Dodge has recalibrated the powertrain control module to optimise fuelling and spark timing for premium and ethanol-blended fuels, and a sensor will determine the ethanol percentage and display it in the instrument cluster.

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The amount of available power will depend on the ethanol percentage, with an ethanol content exceeding 65 per cent delivering the full 764kW.

When topped up with E10 fuel, power is reduced to 671kW and 1098Nm.

Dodge has upgraded the ZF-sourced eight-speed torque-converter automatic to send all that power to the rear wheels, and fitted a 30 per cent stronger rear prop shaft.

In addition, the rear end has been strengthened with a stronger fortified axle and a revised heat treatment process for the half shafts for "optimized [sic] stiffness for acceleration performance."

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An improved TransBrake 2.0 allows the driver to hold the accelerator and then pull a shift paddle to launch at the drag strip, with the added power to set the torque output in tenth-of-a-second increments.

It sports drag-optimised 315/50R17 Mickey Thompson T Street R tyres at the rear, while there's slimmer 245/55R18 rubber at the front, with an optional wheel-and-tyre for wet or colder weather.

A set of forged aluminium and carbon fibre wheels are available on the options list to shave 9.13 kilograms at the front and 5.43 kilograms at the rear.

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While it looks similar to the 2017-vintage SRT Demon, the fender flares have been deleted to save weight, and there's a unique Demon 170 badge.

It will be offered with 14 exterior colours – including the heritage B5 blue and plum crazy – and an optional two-tone black finish for the bonnet, roof and boot lid.

Inside, the SRT Demon 170 is a one-seater, with the passenger seat and rear bench deleted, while there's a two-speaker audio system, lightweight interior carpet, and the removal of noise, vibration and harshness padding.

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The 2024 Dodge Challenger SRT Demon 170 will be limited to 3330 units, with all likely to remain in the United States.

As the final call for Dodge's HEMI V8 muscle cars, the brand will replace the Challenger with an all-new model in 2024, previewed by the all-electric Daytona SRT Concept revealed in mid-2022.

Mopar Insiders reports it will be fitted with the downsized Hurricane inline-six and electrified derivative, joining a four-door successor to the related Charger.