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30 Disgraceful Muscle Cars That Never Fulfilled Their Hype

Vukasin Herbez April 15, 2022

The term “muscle car” symbolizes shiny, high-performance machines that can burn rubber with one step on the gas pedal. This is the true definition of the segment for most drivers. However, not all muscle cars are created this way. Some disgraceful muscle cars only look fast but are very slow.

These disgraceful muscle cars are a very interesting topic since so many models have never achieved popularity. Most were too slow. But some disgraceful muscle cars were fast but never found success for multiple reasons. We looked at 30 of the most disgraceful muscle cars that Detroit ever released below.

Photo Credits: Hemmings

30. Pontiac GTO (1974)

The once-mighty Pontiac GTO was downsized from a separate model to a trim line option for the 1974 Pontiac Ventura. The Ventura was the smallest and cheapest Pontiac at the moment and was a Chevrolet Nova sister model. It was sad to see the once-glorious muscle car being downgraded to just a trim level. The GTO became merely decals on an economy model. It had a 5.7-liter V8 engine pumping out only 200 HP (via Hemmings).

Photo Credits: Hemmings

The 1974 GTO was considered a pathetic attempt to recapture its former glory of the GTO. But the market didn’t fall for the trick. This was also the final year for the classic GTO nameplate. After 7000 examples were produced, the GTO quietly left the scene. Today, those last-year GTOs generate some attention simply as they are the last of the breed. But everybody agrees that the ’74 Ventura GTO is a slow muscle car that simply just boasts a famous name.

Photo Credits: Hemmings

29. Chevrolet Vega Cosworth

In 1975, Chevrolet introduced the interesting but not-so-successful Vega Cosworth model. It featured a high-revving 2.0-liter four-cylinder twin-cam motor with 110 HP (via Chevy Vega Fandom).

Photo Credits: Hemmings

Although it wasn’t particularly fast or strong, the Vega Cosworth was good-looking with an interesting black and gold paint job and unique wheels. The model was produced in cooperation with the British engine engineering company Cosworth which was known for its Formula One engines.

Photo Credits: Silodrome

28. Ford Mustang SVO

The third generation of Ford Mustang appeared as a 1979 model. The upgrade brought much-needed modernization to the Mustang range not only in design but also in technology. The new so-called Fox-body Mustang was sleeker, more modern, and aerodynamic. It was also somewhat lighter and more agile, which was reflected in the performance (via Ford Performance).

Photo Credits: Barn Find

However, the biggest news was the introduction of the turbo engine, a very modern device for the time. Ford’s SVO (Special Vehicle Operations) department introduced a special Mustang SVO for 1984, which featured a 2.3-liter turbocharged four-cylinder with 175 HP. It was quite the power output for a small engine. As a light car, the ’84 Mustang SVO was pretty hot at the moment. The biggest issue with this car was that it featured a turbo engine muscle car traditionalists never really accepted.

Photo Credits: Hemmings

27. Oldsmobile 442 (1978-79)

Back in the late ’60s, the Oldsmobile 442 was a respected car. During the heyday of this model, the name stood for a 400 cubic-inch engine, four-barrel carburetor, and dual exhaust. Yet after the introduction of the big block and other options, this changed while the name stuck. Although many legendary muscle cars died in the early ’70s, Oldsmobile kept the 442 alive but far from the standards of its predecessors (via Autopolis).

Photo Credits: Flickr

The mid-’70s 442 was just an option on mid-size luxury coupes as a marketing gimmick rather than a full-fledged muscle car. The tragedy is that the 442 option was offered on the V6 and 305 V8 models with a four-barrel carburetor. The max power was 160 HP for 1978 and 170 HP for 1979, which was about a third of what a true Oldsmobile 442 would generate back in the day.

Photo Credits: Hemmings

26. Ford Mustang II King Cobra (1978)

The second generation of the Ford Mustang debuted in 1974 and was on the market for four years until 1978. Despite the fact it was the subject of so many jokes and bad press, the Mustang II was actually a very important model. The downsizing of the whole Mustang range, the introduction of four-cylinder engines, and part sharing with other Ford models helped the model survive the recession of the ’70s and the death of the muscle car movement (via Mustang Specs).

Photo Credits: Silodrome

But all of that doesn’t mean that there were no exciting Mustangs between 1974 and 1978; they just were pretty slow. There was one particularly interesting model, and this was the special edition King Cobra. Ford knew that their 5.0 V8 engine made only 140 hp in Mustang II, and the performance was very slow, but they also knew that by dressing up the car, they could attract some buyers.

Photo Credit: Auto WP

25. Chevrolet Monte Carlo SS 1983-88

The Monte Carlo was introduced in 1970. Its SS version was a perfect blend of performance and luxury in an affordable package. But the option was discontinued in 1974 and soon forgotten. In 1983, Chevrolet decided to reintroduce it and the option continued till 1988 with great success (via Monte Carlo SS).

Photo Credit: Auto WP

In the mid-’80s, the Monte Carlo was one of the coolest two-door coupes of the period although its performance wasn’t exhilarating. Under the hood was a 305 V8 with 180 HP mated to a slow automatic transmission. What the SS lacked in performance contributed to the looks and reputation. In its five-year production run, Chevrolet built over 180,000 of these coupes.

Photo Credit: Car Domain

24. Ford Mustang 1974

The second generation of Ford Mustang debuted in 1974 and was on the market for four years until 1978. Despite the fact it was a subject of so many jokes and bad press, the Mustang II was a fundamental model. The downsizing of the whole Mustang range, the introduction of economical four-cylinder engines, and part sharing with other Ford models helped the model survive the recession of the ’70s and the death of the muscle car movement (via Motor Trend).

Photo Credit: Auto WP

The downsized and hideous 1974 model was controversial enough, but the shocking news was that there was no V8 engine available. The 2.3-liter straight-four was the base engine with a 2.8-liter V6 as an optional motor. The V8 arrived a year and a half later in 1975 with low power and compression. But at first, the Mustang II was no faster than an import economy car. This was one of the most controversial decisions in Mustang history and nearly killed the Mustang legacy.

Photo Credit: Pinterest

23. AMC Gremlin GT (1978)

In the late 70s, AMC tried its best to extract all that it could from the little Gremlin by constantly introducing different versions that kept the old platform alive for almost a decade. In 1977, AMC decided to turn the Gremlin into a “muscle car” and installed a 304 V8 engine with 120 HP. The ridiculously low power resulted in terrible performance. But the Gremlin GT was quite a looker with a fresh graphic package, sporty wheels, and new interior equipment (via Motorious).

Photo Credit: Pinterest

Realizing that the performance was painfully slow, AMC installed a 4.2-liter inline-six engine which didn’t produce much more power. But it produced more torque, enough for some improvement. However, even this and heavy discounts by dealers didn’t help. The production was low at around 3000 copies and the GT option was discontinued for the 1978 model year.

Photo Credit: Pinterest

22. Ford Mustang Mach E

For almost six decades, the Ford Mustang has been a sports/muscle coupe or convertible powered by gasoline engines and a rear-wheel-drive train. This is the winning formula and shouldn’t be changed. Most Mustang fans agree with that, but Ford didn’t (via Car and Driver).

Photo Credit: Pinterest

For the 2021 model year, Ford introduced Mustang Mach E, a fully-electric, five-door SUV model with Mustang-inspired styling but technology straight from the Tesla Model X. To millions of Mustang fans, this was terrifying news and a precise attack on the legacy of the Mustang as a proper muscle car. Some even thought it was a joke. But it isn’t. The Mustang E configuration is up and you can reserve one now. Nobody knows how this will affect the Mustang lineup in the future.

1977 Chevrolet Monza | Hemmings.com
Photo Credit: Hemmings

21. Chevrolet Monza Mirage (1977)

The Chevrolet Monza was introduced in 1975 as the newest GM compact model with modern design, good equipment, and a wide arrange of versions and trim levels. The Chevy contracted an outside company called Michigan Auto Techniques to make a muscle car for 1977. Called the Monza Mirage, this one-year model was produced in a somewhat respectful 4,000 examples and featured a 305 V8 with just 145 HP. The design was quite striking with a white body, front and rear spoilers, and unique wheels (via Hip Rides).

Photo Credit: GM

The paint scheme was patriotic, with red, blue, and white stripes. Chevrolet realized that there was still a market for sporty variants and decided to introduce Monza Spyder for 1978, leaving Michigan Auto Techniques without the contract for 1978 and sending the Monza Mirage to the history books. Today, only a handful are known to survive. If you find one, try to buy it and restore it since it is a rare and forgotten muscle car.

Photo Credit: GM

20. Chevrolet Citation X-11

This compact, front-wheel drive hatchback produced from 1980 to 1985 had a somewhat powerful V6 engine and a muscle car look. Maybe it would be best to describe this car as the fine line between the American hot hatch and late model muscle car since it features aspects of both segments (via Hemmings).

Photo Credit: GM

The Citation was a modern model that Chevrolet needed to fight the import models and came in a wide arrange of models. The X-11 featured a 2.8-liter V6 engine and 135 HP. Despite the fact that it doesn’t sound like much today, it was solid power for the time. The X-11 had a few more tricks up its sleeve, such as a sports-tuned suspension, sharper steering, and better brakes.

Photo Credit: Mecum

19. Mercury Capri RS (1980)

The introduction of the third generation Fox-body Mustang also had a significant influence on Mercury since the brand got its version in the form of the Capri in 1979. Since it was a Mercury product, it was more upscale than Ford. But other than a few aesthetical changes, it was identical to the Mustang (via Auto Trader).

Photo Credit: Mecum

Mercury introduced the RS model as the performance version, which featured a 2.3-liter turbocharged engine with a whopping 135 HP. The performance was expectedly bad, but the car looked cool with a large air intake on the hood, big RS badges, and a rear spoiler. Those RS models are rare today, although not very valuable or sought-after by the collectors.

Why The Iron Duke Camaro Was Such A Universal Letdown
Photo Credit: Hot Cars

18. Chevrolet Camaro Iron Duke (1982)

In the early ’80s, Chevrolet introduced a brand-new and fully redesigned third-generation Camaro model, which featured modern styling with improved aerodynamics. The new Camaro was new inside as well, and it had better suspension and new engines. But the improvements didn’t mean performance since the base engine was a pretty anemic 2.3-liter four-cylinder with just 90 HP (via Auto Evolution).

Photo Credit: Mecum

The “Iron Duke” engine was known for its durability and later became the basis for many of GM’s four-cylinder engines. However, in the ’82 Camaro, it was a pretty embarrassing choice since the car had a 20-second 0 to 60 acceleration time. For the muscle car the Camaro has always been, this number was shameful and ridiculous. Fortunately, Chevrolet offered a V8 option so performance lovers had something to look forward to.

Photo Credit: Pinterest

17. Dodge Charger Daytona (1976 to 1977)

You are probably familiar with the original Dodge Charger Daytona from 1969, a big coupe based on Dodge Charger with a pointy nose and massive rear wing, designed for racing in NASCAR and produced in only 500 examples. Less than 10 years after the memorable Daytona, Dodge decided to use this glorious name again in a terrible case of self-reinventing (via Garage Kept Motors).

Striped Cordoba: 1977 Dodge Charger Daytona | Dodge charger daytona, Dodge charger, Classic cars
Photo Credit: Pinterest

They did it this time on the Dodge Charger, which was a Chrysler Cordoba, a two-door luxury coupe with no muscle car credentials whatsoever. The move was not well-received since the Cordoba had a lame 145 HP V8 engine and was more focused on luxury than performance and driving dynamics. Fortunately, buyers punished Dodge for using the precious Daytona nameplate.

Photo Credit: Mecum

16. Chevrolet Corvette C3 (1980)

Between 1970 and 1980, the Chevrolet Corvette was the same car with 10 years between them. The design was the same, although 1980 had a more sculpted front and rear end and less chrome. The technology was the same, and the engines were the same on the outside. But in 1970, the hottest Corvette had 435 HP. In 1980, the hottest Corvette had a modest 180 HP (via Corvette Museum).

Photo Credits: Mecum

So what happened in just 10 years, and where did all those horses go? The recession, emission standards, and safety regulations appeared and killed almost all performances from the legendary Corvette. The 1980 Corvette was kind of a dinosaur with old technology under its plastic skin, lazy engines, and an outdated interior.

Photo Credit: Car Throttle

15. Dodge Aspen R/T

Very similar to the Plymouth Volare Road Runner, Aspen R/T was Dodge’s effort to present a muscle car in the period when such vehicles were almost impossible to construct and sell. However, the Dodge Aspen R/T looked like the real deal and even possessed some power to distance itself from similar attempts of other brands with disgraceful power outputs. Under the Ram Air hood of the Aspen R/T was a 360 V8 engine with 170 HP (via Hemmings).

Photo Credit: Car Domain

The selling point of this car was the looks. It came fully equipped with all the bells and whistles of the late muscle car era. It’s just too bad that these cars didn’t have the power of their ancestors since they could have easily earned top spots in muscle car history. Of course, similar to the Volare, the Aspen had big problems with rust so there are just a few surviving examples today.

Photo Credit: Mecum

14. Ford Thunderbird Turbo Coupe

The Ford Thunderbird isn’t a car you would typically consider a muscle car. Still, in the ’80s, Ford introduced a couple of Thunderbirds that could have that designation. They were billed as an exciting addition to the performance car scene in those days. Although the T-bird was available with a V8 engine, the best performing version was the Turbo Coupe introduced in 1987 (via Ford Authority).

Photo Credit: Mecum

The TC received a Mustang SVO, 2.3-liter turbocharged four-cylinder engine with a manual transmission, 190 HP power level, and top speed of whopping 143 mph. The top speed was affected by the relative lightness of the car and the aerodynamic shape of the ninth-generation Thunderbird.

Photo Credit: Mecum

13. ASC McLaren Mercury Capri

Although the Capri from the ’80s was just a Fox-body Mustang with a different grille, one particular version deserves much more attention. American Sunroof Company (ASC) was known for convertible versions of various production models in those days. They teamed with Ford to produce two-seater roadster variants of the Mustang and Capri (via ASC McLaren).

Photo Credits: Mecum

But Mercury also had a deal with McLaren. In 1984, they introduced a unique model called ASC McLaren Capri. The cars were available as coupe or convertibles with many improvements over standard models. The 5.0-liter V8 had 210 HP, which was a significant increase over other models. There were different details, fog lights, unique wheels, and body kits. The overall production was low and the ASC McLaren line was discontinued in 1986.

Photo Credits: Mecum

12. Dodge Magnum

The model name Magnum might sound familiar since Dodge used it in a successful line of station wagons from 2005 to 2008. However, the Magnum dates as far back as 1978. The original Dodge Magnum was a luxury muscle car coupe Dodge produced for two years in 1978 and 1979 (via Hemmings).

Photo Credit: Mecum

For the time, it was a cool-looking coupe with all the right ingredients. It had rear-wheel drive, a long hood, a short deck, and a thumping V8 in the front. The biggest engine Dodge could order was a 5.9-liter V8 with 195 HP. The Magnum delivered pathetic performance numbers with its considerable weight, slow automatic transmission, and low power. Also, the high price didn’t help sales. Dodge discontinued the Magnum for the 1980 model year.

Photo Credits: Silodrome

11. AMC Spirit AMX

Introduced in 1978, AMC Spirit AMX was an actual compact muscle car due to the fact it had an optional 304 V8 engine, rear-wheel drive, and manual transmission. AMC designed it as a performance version of the Spirit compact car (via Silodrome).

Photo Credits: Silodrome

On sale for just two years, the Spirit AMX had some success due to the fact it was inexpensive and cool-looking. The AMX package included a body kit, special livery, and wide wheels. Unfortunately, AMC decided to kill the model, and the Spirit AMX did not return for the 1980 model year.

Photo Credit: Pinterest

10. Plymouth Fury Roadrunner (1975)

We all know Plymouth Roadrunner as one of the quintessential classic muscle cars that always had performance and power. However, for 1975, Plymouth moved the Roadrunner as an option on the Fury line (via MotorTrend).

Photo Credit: Wikipedia

The Fury Roadrunner had a 440 V8 option with 260 HP on paper. Despite this being a respectable number for the day’s standards, the 0 to 60 mph times were over eight seconds which is something that today’s cheapest economy cars can match. As a result, sales were pitiful.

Photo Credit: Pinterest

9. AMC Matador X (1974)

When the Javelin AMX was discontinued, AMC was left without any muscle car in their lineup. So they quickly decided to introduce the Matador X. The Matador was redesigned for 1974 and featured a signature coupe body style. The company presented the “X” package, which could be had with 360 V8 or an optional 401 V8 with 235 HP (via Old Cars Weekly).

Photo Credit: Pinterest

Regardless of the dress-up kit and big V8, the Matador X wasn’t any faster than the Javelin and the option was killed after only one year as a result.

Photo Credit: Mecum

8. Pontiac Grand Prix 2+2

Domestic car buyers were pretty surprised when Pontiac introduced an attractive 2+2 package for its popular luxury coupe in 1986. It was a muscle car the company had lacked since the late ’60s and an interesting version of the rather dull Grand Prix (via Hemmings).

Photo Credit: Flickr

Very similar to Monte Carlo SS Aerocoupe, the Grand Prix 2+2 used the same platform, rear glass, and rear spoiler intended for NASCAR races. Unfortunately, Pontiac didn’t provide 2+2 with exciting performance since all cars got the 305 V8 with 165 HP. On the other hand, Grand Prix 2+2 handled much better than the Aerocoupe because of its gas-filled shock and stiffer springs. Pontiac produced this model for two years, making only 1225 cars while eventually discontinuing the model.

Photo Credit: Flickr

7. Dodge Charger (1983)

Even though the Charger from the late ’70s was a slow car that threatened to kill the muscle car reputation of the glorious late ’60s and early ’70s cars, Dodge felt that the name deserved another chance (via Classi Cars).

Photo Credits: Flickr

In those days, the Chrysler Corporation was all about K-platform front-wheel-drive cars. Dodge introduced the Charger as an option on a compact and boring Dodge Omni in 1981. The appearance package proved somewhat popular, enough to convince Dodge to try it as a separate model for 1983. That was how the L-Body Charger was born.

Photo Credit: Barrett Jackson

6. Ford Mustang McLaren M81

Ford built this exciting car with the help of the well-known McLaren racing team. The whole idea behind the project was to take the 2.3-liter turbo engine from the regular Mustang and transform it into a street racing beast. They added a race-tuned suspension, a lightweight body, and a host of other modifications. McLaren and Ford installed a tuned turbo engine with 190 HP. That was a big number for the day, especially coming from 2.3 liters (via The Drive).

Photo Credits: Barrett Jackson

They changed the looks of the Fox Mustang, as well. The updates resulted in a performance level that was good for the standards of the day but is quite embarrassing today. The driving dynamics were excellent, but the car came with a high price tag, making it a sales failure as a result.

Photo Credit: Flickr

5. Oldsmobile Starfire GT

The mid-’70s weren’t an especially good period for Olds performance. When the new compact Starfire model was introduced, Olds engineers decided to present the performance version of this car. This model was called the Starfire GT and was an appearance package on a regular Starfire hatchback (via Motor Trend).

1975 Oldsmobile Starfire for sale on BaT Auctions - closed on November 11, 2021 (Lot #59,366) | Bring a Trailer
Photo Credit: Bring A Trailer

With unique body stripes, color, details, wheels, and stabilizer bar, the Starfire GT was more dynamic than the regular model and the closest thing Oldsmobile had to a sports or muscle car in 1976. That still wasn’t enough to make it rank anywhere near the best muscle cars.

Photo Credit: Mecum

4. Pontiac Firebird Trans Am Turbo

The second-generation F-Body Firebird was introduced in 1970, and by the late ’70s, was one of the dominant cars in the segment. Unfortunately, the days of big cube motors and high horsepower ratings were gone, so Pontiac decided to invest in new technology to generate power. That new technology was turbocharging, and in late 1979, it introduced the Trans Am Turbo (via Driving Line).

Photo Credit: Mecum

The engine in question was a 301 V8 with a Garrett turbocharger bolted onto it. The power output was relatively modest at 200 to 210 HP, but the torque number was high at 340 lb.-ft, which resulted in a hint of performance. However, it was miles away from the big-block performance Firebird fans had come to expect from the model.

Photo Credit: GM

3. Chevrolet Camaro Z/28 (1977)

The 1977 Z/28 Camaro was an essential model for the breed. It marked the return of the Z/28 package and a slight power increase over standard models. The 350 V8 delivered 170 HP, which was respectable in 1977 (via Hemmings).

Of course, the performance was just a shadow of what Camaro was capable of just several years before. But it was the best you could get in the late ’70s. Also, the 1977 Camaro Z/28 will be remembered as a cool-looking car despite its lack of real Camaro performance.

Photo Credit: Mecum

2. Chevrolet El Camino SS (1986)

The glorious big-block El Caminos of the late ’60s were long gone in the ’80s. When Chevrolet introduced the SS option on this pickup in 1986, it included a 305 V8 with 150 HP (via GM Heritage Center).

Photo Credit: Mecum

As you expected, this wasn’t a performer as the name and legacy suggested, but only a dressed-up regular El Camino. Production on this model ended in 1987 and the SS option was soon forgotten.

Photo Credit: GM

1. Pontiac GTO (2004)

The first year for the modern GTO was 2004. The car met universal praises from buyers and car press. Its design wasn’t exactly new or aggressive, but the new GTO had the muscle car form and street presence. Under the hood was an LS1 5.7-liter V8 with 350 HP. It had enough performance to be one of the hottest American cars for the 2004 model year. The target sales figure was 18,000 and Pontiac sold almost 14,000, which showed that buyers weren’t impressed (via Edmunds).

Photo Credit: GM

The 2005 model year saw the introduction of the 400 HP 6.2-liter engine. It had even better performance (0 to 60 mph time of just 4.6 seconds). Sales started to decline and by 2006, the final model year, the GTO was being blamed for singlehandedly causing the downfall of Pontiac as a brand.

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