1966 Mercury Cyclone 6.4 V8 Review and Performance Comparison

Mercury Cyclone Performance Review.

Introduction:

The 1966 Mercury Cyclone 6.4 V8 is a powered by a Petrol V 8. This variant of the Mercury Cyclone 6.4 V8 is the 3 speed / Auto version and was first brought out around 1966. This was at around the same time as the introduction of the 1966 AC Cobra 427 and the 1966 Chevrolet Corvette C2 Stingray 427 425hp.

This particular Mercury Cyclone has a 6399cc Naturally Aspirated Petrol powerplant driven by the Mercury Rear Wheel Drive system.

Alternative Petrol V 8's include the 2023 Dodge Challenger SRT Demon 170

The Cyclone shares its Petrol V 8 engine configuration with the likes of the 2023 Dodge Challenger SRT Demon 170 and the 2023 Ferrari SF 90 XX Spider 4.0 V8 Turbo.If you're looking for other similar performing cars which share the Cyclone's Rear Wheel Drive, Coupe combination then how about the 1985 Alfa-Romeo Spider Veloce or the earlier 1982 Fiat X1/9 1.5 8V.

Power and Weight:

Weighing in at 1630 kgs (3593 lbs) places the Mercury Cyclone 6.4 V8 in a similar weight category as the 2024 Aston-Martin Valhalla Hybrid and the excellent 2024 BMW 1 Series M135 xDrive, give or take 50kg.

The Mercury Cyclone shares the same bhp with the 2024 Audi A3 S3 Sedan (328 bhp)

In terms of pure power the 6399cc 16 valve, V 8 engine produces around 335 bhp (249 kW) @ 4800 rpm which is comparable to the 2024 Audi A3 S3 Sedan (328 bhp) and also the 2024 Audi A3 S3 Sportback (328 bhp).

The Naturally Aspirated V 8 throws out 427 lb-ft (578.9 Nm) @ 3200 rpm placing it with cars of similar torque performance figures such as the 2025 Ford Mustang GT Fastback (418 lb-ft) or the 2025 Toyota Supra A90 Final Edition (421 lb-ft).

Power to Weight:

If you look at both power or torque of the 1966 Mercury Cyclone in comparison with its weight you get a much more accurate idea of its real world performance.

The 2004 Mercedes SLK Class 55 AMG (230.5 bhp per ton) has similar Bhp Per Ton stats as the Mercury Cyclone.

The Mercury Cyclone has a power to weight ratio of 205.5 bhp per ton. Bhp per ton figures of the 1966 Cyclone 6.4 V8 means you're competing with the 2004 Mercedes SLK Class 55 AMG (230.5 bhp per ton) and the equally quick 2012 Porsche Boxster S PDK (230.3 bhp per ton).

Torque to Weight:

If you agree with the late great Carroll Shelby then arguably an even better indicator of potential performance is Torque!. However, torque isn't the whole story, you also need to compare weight as well for more real world comparisons such as torque per ton.

The Mercury Cyclone 6.4 V8 generates around 261.9 lb-ft per ton. So if you're looking at what cars perform similarly either on the drag strip or at the traffic lights using torque to weight as a benchmark, then look no further than the 2015 Mercedes C Class 63 AMG S Estate (286.6 lb-ft per ton) or the similarly performing 2015 Lamborghini Huracan LP 580-2 (286.5 lb-ft per ton).

Acceleration:

The Mercury Cyclone 6.4 V8 can accelerate 0–60mph in 6.10 secs or 0–100km/h (0–62mph) in 6.3 secs. Acceleration rivals to the Mercury Cyclone 6.4 V8 include the 2017 Hyundai i30 N 2.0 Turbo (6.10 secs) or the equally as fast to 60mph 2017 Land-Rover Velar 3.0 SDV6 300 (6.10 secs).

The V 8 engine of the Mercury Cyclone 6.4 V8 ensures that, ‘on paper’ at least, accelerates slightly faster than the 2022 Mercedes EQE SUV 350+ (6.20 secs) and the 2019 Toyota Supra SZ-R 2.0 Turbo (6.20 secs).

Quarter Mile time is a close race between the Mercury Cyclone 6.4 V8 and the Ford Mustang SVT Cobra 4.6 V8

On a longer format for acceleration comparisons the 1966 Mercury Cyclone can reach a quarter mile in an estimated 13.93 secs with a trap speed around 97.8 mph. Similar performances down the quarter mile drag strip can be found with the the Ford Mustang SVT Cobra 4.6 V8 (13.94 seconds @ 97.7 mph) and a close race between the BMW X7 xDrive 50i 4.4 V8 Turbo (13.94 seconds @ 97.7 mph) too.

Top Speed:

Some modern performance cars are often artificially restricted particularly when it comes to max speed. 155 mph top speed restrictions are often used as part of the German 'Gentleman's Agreement' for example, so be cautious when using maximum speed figures. The 1966 version of the Mercury Cyclone 6.4 V8 has a maximum speed of 115mph.

Top Speed of the 1966 Cyclone equals the Nissan Cherry 1.5 Turbo (114 mph)

If maxing out your car on the AutoBahn is your thing and you're wondering what has a similar top end performance to the 1966 Mercury Cyclone 6.4 V8 then there's the slightly slower the Nissan Cherry 1.5 Turbo (114 mph) or how about the impressive Caterham Super 7 1.4 Supersport (114 mph).

— AutoSnout

Figures & Specs Summary:

Related Links:

• 1966 Cyclone Rivals List.
• 1966 Cyclone: Full Review and Comparisons.
• A Brief History of Mercury
• Compare the 1966 Mercury Cyclone