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The End of an Era: Unpacking the Horsepower Wars as Traditional Muscle Cars Fade Away
By Azzief Khaliq Updated on August 1, 2024 9:30 am EDT
The era of the traditional muscle car, characterized by roaring V8 engines and tire-shredding performance, is officially drawing to a close. With Chrysler ceasing production of its iconic third-generation HEMI V8—and consequently, the Dodge Challenger and Charger as we know them—to pivot towards six-cylinder and electric powertrains in models like the Charger Daytona and Sixpack, and Chevrolet benching the Camaro before a potential EV rebirth, the landscape is shifting dramatically. Even the Corvette, with its mid-engine transformation in 2020, arguably strays from the classic muscle car definition.
Ford appears to be the last bastion of the traditional muscle car, as CEO Jim Farley has publicly dismissed the idea of an all-electric Mustang coupe. However, even Farley has acknowledged that hybrid powertrains might be the future for high-performance driving, signaling that electrification is inevitable.
With these seismic shifts underway, now is the perfect time to reflect on the incredible horsepower race that has defined the modern muscle car era. We’ve witnessed a fascinating period where manufacturers pushed the boundaries of internal combustion, creating some of the most powerful production cars the world has ever seen. Let’s take a nostalgic journey through some of the most significant contenders in this horsepower showdown.
Ford Mustang Dark Horse — 500 hp
The Ford Mustang Dark Horse represents the latest evolution of the Mustang lineage, offering the highest horsepower output in the seventh-generation model. It takes the updated engine, digitized interior, and refreshed styling of the standard Mustang and elevates it to a new level of performance.
The previous sixth-generation Mustang peaked with the limited-edition Mach 1, which produced 480 horsepower. The Dark Horse surpasses this by leveraging a souped-up version of Ford’s legendary 5.0-liter Coyote V8, now producing 500 horsepower and 418 lb-ft of torque. Ford borrowed a page from the playbook of the sixth-generation Shelby Mustang GT500, incorporating the piston connecting rods from that car’s 5.2-liter V8. Additionally, the Dark Horse’s Coyote V8 features a dual throttle-body intake, designed to improve airflow and breathing efficiency.
According to MotorTrend testing, the 500 horsepower enables the Dark Horse to accelerate from 0 to 60 mph in 3.7 seconds and cover the quarter-mile in 12 seconds at 118.4 mph. While not the quickest on this list, the Dark Horse is a formidable track car thanks to other enhancements such as MagneRide suspension, a Tremec six-speed manual transmission, an optional Handling Pack, and carbon fiber wheels.
As of this writing, the Mustang Dark Horse is one of the few remaining traditional muscle cars still in production. Prices start at $60,365, and Ford also offers a track-only Dark Horse R variant for serious enthusiasts.
Chevrolet Camaro Z/28 (fifth-generation) — 505 hp
The fifth-generation Chevrolet Camaro bowed out with a resurrected Z/28 model, marking the first time this iconic nameplate had appeared since 2002. The Z/28 was available for the final two years of the fifth-gen Camaro’s run—2014 and 2015—and ranked second in horsepower only to the 580-horsepower fifth-gen ZL1. It boasted 505 horsepower and 481 lb-ft of torque from a 7.0-liter LS7 engine, widely regarded as one of the best LS engine generations ever created.
However, Chevrolet’s engineers had a different objective with the Z/28 than pure horsepower dominance. The Z/28 was envisioned as a track monster, incorporating weight-saving measures alongside high-performance components such as Multimatic Dynamic Suspensions Spool Valve dampers, ultra-wide Pirelli PZero Trofeo R tires, Brembo carbon ceramic brakes, and an aerodynamic kit to generate additional downforce. While it lacked the raw power of the ZL1, the modifications made the Z/28 a superior driver’s car, even earning it MotorTrend’s Best Driver’s Car award in 2014.
The Camaro Z/28 was still exceptionally fast, with a 0-to-60 mph time of 4.0 seconds—impressive even by 2024 standards. Its quarter-mile time of 12.3 seconds at 117.2 mph, as tested by MotorTrend, rivaled all but the highest-horsepower variants of Dodge’s Charger and Challenger muscle cars. Sadly, Chevrolet chose not to bring the Z/28 back for the Camaro’s sixth generation.
Chevrolet Camaro ZL1 (sixth-generation) — 650 hp
Among all the Chevrolet Camaro trim levels and models ever produced, the ZL1 stands out as the pinnacle of performance. While the ZL1 originated as a semi-official COPO Camaro in 1969, Chevrolet later embraced the ZL1 branding for the fifth and sixth-generation Camaros, resulting in some of the most powerful Camaros ever to hit the streets.
The fifth-generation ZL1 already delivered an impressive 580 horsepower from a supercharged 6.2-liter LSA V8, one of the most powerful engines ever installed in a Camaro. But Chevrolet didn’t stop there. They took performance to the next level with the debut of the sixth-gen Camaro ZL1 in 2017, featuring a supercharged 6.2-liter LT4 V8—an upgrade over the already potent LT1 used in the 1SS and 2SS Camaros—rated at 650 horsepower and 650 lb-ft of torque.
Chevrolet claimed a 0-to-60 mph time of 3.5 seconds and a quarter-mile time of 11.4 seconds, with the sixth-gen ZL1 crossing the finish line at a remarkable 127 mph. However, the ZL1 wasn’t just about brute force. Features like a Magnetic Ride suspension, Goodyear Eagle F1 Supercar tires, an electronic limited-slip differential, and high-performance Brembo brakes contributed to a well-rounded package that contemporary reviewers favorably compared to premium European sports cars from brands like BMW and Mercedes-Benz.
The Camaro ZL1 is still in production, although 2024 marks the final year for this iteration. Prices begin at $72,100.
Cadillac CT5-V Blackwing — 668 hp
General Motors’ supercharged 6.2-liter LT4 engine, which first appeared in the 2015 Corvette Z06, proved its mettle in the Camaro ZL1, so it’s no surprise that GM repurposed it for the 2022 Cadillac CT5-V Blackwing. However, Cadillac didn’t simply drop the same engine into the CT5-V’s engine bay. Instead, they tuned the LT4 to produce 668 horsepower and 659 lb-ft of torque, surpassing the Camaro ZL1 and earning it the title of the fastest and most powerful production Cadillac ever at its debut.
Cadillac claimed 0-to-60 mph and quarter-mile times of 3.4 and 11.3 seconds, respectively—results echoed in MotorTrend’s tests. But Cadillac’s ambitions extended beyond straight-line speed. To showcase the car’s track capabilities, Cadillac Arabia enlisted current F1 Academy driver Amna Al Qubaisi to pilot the Blackwing around the iconic Yas Marina circuit in 2022. The Blackwing earned another distinction that day, completing the lap in 2:20.98, making it the fastest production sedan to ever navigate the circuit.
This record stood at the time of writing, though it’s possible no one has since challenged it. Regardless, the CT5-V Blackwing’s lap is a remarkable achievement, especially for a four-door sedan weighing over 4,000 pounds. The Cadillac CT5-V Blackwing remains available, with Cadillac announcing a largely cosmetic refresh for the 2025 model year in early 2024. Prospective owners can purchase one starting from $93,495.
Chevrolet Corvette Z06 (C8) — 670 hp
The modern Corvette represents a significant departure from its predecessors, with a mid-engine layout that places it in the same rarefied air as Ferraris and Lamborghinis. After all, traditional muscle cars don’t feature mid-engine configurations. However, denying the Corvette’s muscle car status would be a disservice to the heritage of iconic models like the C3 Stingray, so it rightfully earns its place on this list.
The 2020 Corvette Stingray debuted with a 6.2-liter LT2 V8 producing a maximum of 495 horsepower and 470 lb-ft of torque, already an impressive figure for an entry-level Corvette. But Chevrolet quickly escalated the performance further by announcing the Corvette Z06 for the 2023 model year, featuring an all-new 5.5-liter LT6 V8 engine.
Unlike the supercharged LT4 in the Camaro ZL1, the LT6 is naturally aspirated. GM claims it’s the most
