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The Forgotten Fastback Fighter, 1968 Mercury Cyclone GT

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While most enthusiasts obsess over the Mustang and Camaro, Mercury’s Cyclone GT was quietly building a reputation as one of the most underrated muscle cars of 1968. Built on the same intermediate platform as the successful Fairlane, the Cyclone offered buyers a more upmarket alternative with serious performance credentials and distinctive styling that set it apart from the crowd.

The Gentleman’s Muscle Car

Mercury positioned the Cyclone GT as a more refined muscle car, targeting buyers who wanted performance without sacrificing comfort or style. The fastback roofline gave it an aggressive profile, while the distinctive grille and Mercury badging provided visual separation from its Ford cousins. Under the hood, the standard 390 cubic inch V8 delivered 335 horsepower, making it a serious contender in the intermediate muscle car wars.

The 390 V8 was a torque monster, producing 427 lb-ft at just 2,800 rpm. This meant effortless acceleration and impressive street performance, with quarter-mile times hovering around 14 seconds flat. The engine’s broad powerband made it particularly well-suited to street driving, delivering strong pull from virtually any rpm.

Driving the Cyclone

Behind the wheel, the Cyclone GT strikes a balance between performance and comfort that was characteristic of Mercury’s approach. The steering is heavy but precise, and the suspension provides a firm but controlled ride that doesn’t punish passengers. The 390’s soundtrack is deep and authoritative, with a rumble that builds to a roar under full acceleration.

The four-speed manual transmission shifts with mechanical precision, though the clutch requires a firm foot. In traffic, the Cyclone is surprisingly docile, with enough low-end torque to pull cleanly from idle in higher gears. The brakes, while adequate for the era, remind you that this car was built when stopping power hadn’t caught up to acceleration capability.

Market Position and Legacy

The Cyclone GT faced stiff competition from the Chevelle SS, GTO, and 4-4-2, but Mercury’s intermediate muscle car held its own with distinctive styling and solid performance. Production numbers were modest compared to its more famous rivals, which makes surviving examples relatively rare today.

The 1968 model year was significant for the Cyclone, as it received updated styling that would carry through to the legendary Cyclone Spoiler models of 1969-1970. The GT package included performance suspension, wide-oval tires, and distinctive badging that announced its intentions without being overly aggressive.

Muscle Cars

1968 Mercury Cyclone GT

390 V8 / Intermediate Muscle

Original Price: $3,206 (Approx. $28,500 today)

0-60 MPH 6.8s
Top Speed 124mph
Power 335hp
Production 6,105units

Engine

Type 390 CID V8
Power 335 hp @ 4,600 rpm
Torque 427 lb-ft @ 2,800 rpm

Transmission

Type 4-Speed Manual
Drive Rear-Wheel Drive
Final Drive 3.25:1

Dimensions

Length 201.0 in
Width 74.7 in
Weight 3,515 lbs

History

Introduced 1968
Designer Mercury Design
Market Value $25,000-45,000

Ratings

Performance

7.5

Handling

6.5

Daily Usability

7.0

Value

8.0

Sound

8.5

Character

9.0

The 1968 Mercury Cyclone GT remains one of the muscle car era’s best-kept secrets, offering distinctive style and solid performance at a fraction of what you’d pay for comparable GTO or Chevelle SS examples. With its torquey 390 V8 and upmarket Mercury refinement, it’s the gentleman’s choice in vintage American muscle.

3 thoughts on “The Forgotten Fastback Fighter, 1968 Mercury Cyclone GT”

  1. man those cyclones were beasts, ive seen a couple come through needing roadside help over the years and they had real presence you know. the 390 engine was no joke especially when owners actually maintained them proper – recieve a lot of calls from folks who neglected the cooling system tho lol. tbh the styling was way ahead of its time, real shame more people dont appreciate those mid-size cars from that era.

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  2. Those 390s are thermal nightmares when they’re running lean or the cooling system gets neglected, which I’ve seen way too often with vintage muscle cars like the Cyclone. I’d love to get a thermal imaging camera on one of these that’s been properly maintained versus one that’s been beat on, bet the heat signature patterns would tell a completely different story about what Ron’s talking with the maintenance aspect.

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    • ngl thats actually a sick idea – you could probably map out exactly where all that heat is radiating from and it’d make the audio staging potential in those cars real obvious too, like where you’re gonna have thermal issues if your running amps and subs in the trunk near a hot engine bay. ive installed stuff in a few vintage muscle cars and the heat management is legit one of teh biggest challenges, specially if the origional cooling system is shot and your trying to cram modern electronics back there.

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