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Mercury Cyclone


Mercury Cyclone

Mercury (Comet) Cyclone
1971 Mercury Cyclone GT
Manufacturer Mercury (Ford)
Model years 1964–1971
Body and chassis
Class Muscle car
Body style 2-door coupe
2-door convertible
Layout FR layout
Related Mercury Comet
Ford Fairlane
Mercury Montego
Ford Torino Talladega

The Mercury Cyclone is an automobile that was produced by Mercury from 1964 to 1971. It started as a performance model of the 1964 Mercury Comet, and was named the Mercury Comet Cyclone through 1967. For 1968, the "Comet" part of the name was dropped. Options such as GT, Spoiler and Cobra Jet were added and removed. In 1971, it was integrated into the Mercury Montego line as their performance model.[1]


  • History 1
    • 1964 1.1
    • 1965 1.2
    • 1966 1.3
    • 1967 1.4
    • 1968 1.5
    • 1969 1.6
      • Spoiler II 1.6.1
      • Cobra Jet 1.6.2
    • 1970 1.7
      • 1970 Cyclone Spoiler 1.7.1
      • 1970 Cyclone GT 1.7.2
    • 1971 1.8
    • 1972 1.9
  • Production 2
  • Notes 3
  • References 4
  • External links 5



The Cyclone started as an option for the 1964 Mercury Comet. It featured a 289 cu in (4,736 cc), 210 hp (156.6 kW) engine and a sporty look. It had a spoked steering wheel and bucket seats. Some of the engine parts were chromed in the style of muscle cars.


In the 1965 models, the engine was updated to the four-barrel carburetor version of the 289 cu in (4,736 cc) unit, but generated 200 hp (149.1 kW). The '65 had a few performance options, which include a handling package, a special fan, and a "Power Transfer" rear axle. Special features included a black out, stand-up grille, bucket seats with sew-through pleats, centre console, chrome-plate wheel covers with lug nuts, engine "Dress Up Kit", unique insignias, a vinyl roof in black or white and a Power-Pac gauge cluster for the heavily padded instrument panel.[2]


1966 Mercury Comet Cyclone GT Hardtop

The 1966 models underwent a major styling change. The body received "sculpturing" that ran the length of the car, and was based on the body of the Ford Fairlane. The models introduced new engines. The 390 Y code was a 390 cu in (6,391 cc) engine with a two-barrel carburetor and 265 hp (198 kW). The 390 H code had a four-barrel carburetor and 275 hp (205 kW).

The GT option used a 390 S code engine which was a 390 cu in (6,391 cc) engine with a four-barrel carburetor and 335 hp (250 kW). The GT featured car stripes, a fiberglass hood (bonnet) with scoops and several other performance options.


The 1967 model was produced with several engine options. The standard engine was the 289 V8 with 289 cu in (4,736 cc) and 200 hp (149 kW). The GT's engine was 390 cu in (6,391 cc), but was quoted with 15 fewer horses at 320 hp (239 kW).

Neither the 1966 Cyclone nor the 1967 Cyclone used the 427 cu in (6,997 cc) side-oiler engine that went into the standard Comet. Only badges told of the 410 hp (306 kW) under the hood (bonnet).


The 1968 models dropped "Comet" from their name. The Cyclones had a mid tire level body tape stripe. The Cyclone GT's had an upper level body stripe, buckets, wide whitewall tires, special wheel covers, all vinyl interior, and the special handling package. It was named the fastest car of that year, because it set a world record speed of 189.22 mph (304.52 km/h) at Daytona.

Several engines were available for the Cyclones:

The 302 cu in (4,949 cc) standard engine was available as either the two-barrel carburetor, which generated 210 hp (157 kW), or the four-barrel carburetor, which generated 230 hp (172 kW).

The 390 cu in (6,391 cc) optional engine (standard for GT) was available as either the two-barrel carburetor, which generated 265 hp (198 kW), or the four-barrel carburetor, which generated 325 hp (242 kW).


In 1969, the Cyclones had several engine options:

The 302 cu in (4,949 cc) engine was available with 220 hp (164 kW).

The 351 cu in (5,752 cc) engine had two versions: one was 250 hp (186 kW) and the other was 290 hp (216 kW).

The 390 cu in (6,391 cc) engine for the GTs was available with 320 hp (239 kW).

Spoiler II

Mercury produced a version of the Cyclone for NASCAR called the Cyclone Spoiler II. The model was available in two flavors. The street version featured a 351 cu in (5,752 cc) Windsor block, and was used to enter into the NASCAR business. The racing version featured a 429 cu in (7,030 cc) Boss block, which was the same engine as the one in the 1969 Boss Mustang.

Cobra Jet

Mercury also added a new model to the Cyclone line: the Cobra Jet (CJ). The Cobra Jet's engine was a 428 cu in (7,014 cc) which generated 335 hp (250 kW). The engine had a Ram Air option, a 735 CFM Holley four-barrel carburetor, although the option showed no quoted difference in horsepower rating. The Mercury Cyclone CJ had the following enhancements over the Cyclone and Cyclone GT: it had a blacked-out grille; dual exhausts; 3:50:1 axle ratio; engine dress-up kit (chromed parts); hood (bonnet) stripes; and a competition handling package.


A 1970 Cyclone 429.

The CJ model was dropped from the Cyclone lineup, and applied to some of the engine names in the series. Mercury thus featured the Cyclone, Cyclone Spoiler and Cyclone GT. The Cyclones consisted of 351 cid V8s and 429 cid V8 engines.

The standard engine for the base Cyclone was the 429 cu in (7,030 cc) four-barrel with dual exhaust that was rated at 360 hp (268 kW) SAE gross (250 hp (186 kW) net). It was the standard engine in the 1970 Mercury Marauder X-100 and was available in other full size models. It featured a 575 CFM carburetor.

Two optional engines were available for the Cyclone. The 429 Cobra Jet was the 429 cu in (7,030 cc) four-barrel with dual exhaust but with the Ram Air induction. It was rated at 370 hp (276 kW) SAE gross (305 hp (227 kW) net) and had a 700 CFM Rochester Quadrajet 4 BBL carburetor. The 429 Super Cobra Jet, which was part of a Drag Pack option, was a 429 cu in (7,030 cc) four-barrel with dual exhaust and Ram Air induction, but it was rated at 375 hp (280 kW) SAE gross (335 hp (250 kW) net), and had a 780 CFM Holley 4 BBL carburetor.

1970 Cyclone Spoiler

The Cyclone Spoiler was for the performance minded with front and rear spoilers, racing stripes that went from front to the rear of the car, hood (bonnet) scoop for ram air induction, duel point distributor, staggered rear shocks, racing mirrors and a competition package. The 429 Cobra Jet was the standard engine for the Cyclone Spoiler. An optional engine was the 429 Super Cobra Jet.

1970 Cyclone GT

This model featured a non-functional hood scoop, full length lower body side molding, remote and racing mirrors, high back bucket seats, door trim, and a three spoke rim blow steering wheel.

The standard engine for the 1970 Cyclone GT was the 351 cu in (5,752 cc) two-barrel with single exhaust that was rated at 250 hp (186 kW) SAE gross (175 hp (130 kW) net).

The optional engines for the Cyclone GT included the 351 cu in (5,752 cc) four-barrel with dual exhaust. It was rated at 300 hp (224 kW) SAE gross (260 hp (194 kW) net), and was available with or without Ram Air induction. The GT can also be outfitted with the other 429 engines.

While a convertible was offered for the Ford Torino in 1970 and 1971, no convertible was offered for the Mercury Montego and Mercury Cyclone in 1970 and 1971.


In 1971, the Cyclone had lost its distinction as it was renamed the Mercury Montego Cyclone. The three variants (Cyclone, Cyclone GT, Cyclone Spoiler) were merged into the Montego line. It sold poorly; the production numbers for the Cyclone were in the triple figures. The Montego Cyclone GT, which used the 351 Cobra Jet engine, sold much better, but still sold less than its predecessors.


For 1972, the Mercury Montego was fully redesigned, with body on frame construction, front and rear coil spring suspension and a new shorter 114" wheelbase for two-door models. The Cylcone was reverted to an performance option package available on Mercury Montego, Mercury Montego MX two doors and the Mercury Montego GT. The package included one of two engines, the 351 cu in (5,752 cc) four-barrel Cobra Jet engine rated at 248 hp (185 kW) SAE net or the 429 cu in (7,030 cc) 4-brarrel rated at 205 hp (153 kW) SAE net. The option group included a functional Ram Air induction through twin integrated hood scoops, Traction-Lok (limited slip) differential, F70-14 for 351 cu in (5,752 cc) cars, and G70-14 tires for 429 cu in (7,030 cc) powered cars, hub caps and trim rings, body striping and identification, three spoke steering wheel and dual racing mirrors. The 351 cu in (5,752 cc) was available with either a 4-speed manual transmission or a 3-speed automatic, while the 429 cu in (7,030 cc) was only sold with an automatic transmission. [3]

Early Mercury factory literature showed this option available, while later editions did not have any information on the Cylcone package. Only 30 1972 Cyclone package cars were produced, 29 Montego GT's and one Montego MX. Twenty of these Cylcones were equipped with the 429 cu in (7,030 cc) engine. [4]


Production of Cyclones
№ Cyclones
(all versions)
1964 7,454[1]
1965 12,347[1]
1966 8,194[1]
1967 6,910[1] 809 convertibles
1968 13,628[1] 6,439 Spoilers[1]
1969 9,143 [5] 5,882 Cyclones [5] + 3,261 Cyclone CJs [5]
1970 1,695 Cyclones, 10,170 GTs, 1,631 Spoilers[1]
1971 444 Cyclones, 2,287 GTs, 353 Spoilers[1]
1972 30 Cyclones



  1. ^ a b c d e f g h i Holder, Bill; Kunz, Phil. Ford Muscle. F+W Publications, Inc. 2004, p. 83-90. ISBN 0-87349-835-6
  2. ^
  3. ^
  4. ^
  5. ^ a b c John Gunnell, Standard Catalog of American Cars 1946-1975, Revised 4th Edition, page 533

External links

  • Mercury Cyclone
  • Mercury Comet History
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