1964 Ford Mustang Convertible I 4.7 V8 (210 Hp)

The Ford Mustang Convertible I, specifically equipped with the 4.7-liter V8 engine producing 210 horsepower, represents the initial offering of the iconic Mustang as a convertible model. Introduced in 1964 and remaining in production through that same year, this variant was a pivotal part of the first generation (1964½–1973) Mustang lineup. It capitalized on the immense popularity of the coupe, offering open-air driving enjoyment and solidifying the Mustang’s position as America’s sports car. This initial convertible model was a direct response to public demand following the unexpectedly strong sales of the original coupe.

The 1964 Mustang Convertible I 4.7 V8: Positioning and Overview

The 1964 Mustang Convertible I with the 4.7L V8 engine was positioned as the premium offering within the initial Mustang range. While the six-cylinder engine was available as a more economical option, the V8 signified a step up in performance and was targeted towards buyers seeking a more spirited driving experience. It wasn’t the highest-performance Mustang available (later models would offer significantly more powerful engines), but it provided a compelling balance of power, style, and affordability. The Convertible I designation indicated the first iteration of the convertible body style, setting the stage for future refinements and options.

Powertrain & Engine Architecture

At the heart of the 1964 Mustang Convertible I 4.7 V8 lay the Ford 289 cubic inch (4.7 liters) small-block V8 engine. This engine, internally designated as the ‘K-code’ variant, produced 210 horsepower at 4400 rpm and 300 lb-ft of torque. The engine featured a 9:1 compression ratio, a cast iron block, and aluminum cylinder heads. Fuel delivery was managed by a two-barrel carburetor, a common setup for the time. The valvetrain utilized an overhead valve (OHV) configuration with two valves per cylinder. The engine was longitudinally mounted in the front of the vehicle, driving the rear wheels.

The transmission offered with this variant was a four-speed manual transmission as standard. While an automatic transmission (a three-speed Cruise-O-Matic) was available as an option, the manual transmission was favored by enthusiasts for its greater driver control and slightly improved performance. The engine oil capacity was 4.7 liters (4.97 US quarts), and the cooling system held 13.7 liters (14.48 US quarts) of coolant.

Driving Characteristics

The 1964 Mustang Convertible I 4.7 V8 offered a respectable driving experience for its era. The 210 horsepower engine provided adequate acceleration, allowing for a 0-60 mph time in the neighborhood of 8-9 seconds. The power delivery was relatively linear, with a noticeable surge of torque in the mid-range. The four-speed manual transmission allowed drivers to keep the engine in its optimal power band, enhancing responsiveness. Compared to the six-cylinder Mustang, the V8 version felt significantly more powerful and capable. However, it wasn’t as quick or agile as later Mustang models equipped with larger, more powerful engines like the 390 cubic inch V8.

The convertible body style added some weight compared to the coupe, slightly impacting handling. The suspension, consisting of double wishbones at the front and a leaf spring rear axle, provided a comfortable ride but wasn’t particularly sporty. Steering was accomplished via a cone worm and recirculating ball system with optional hydraulic power steering.

Equipment & Trim Levels

The 1964 Mustang Convertible I 4.7 V8 came standard with a relatively basic level of equipment. Standard features included a black vinyl interior, a basic instrument panel, and a floor-mounted shifter (with the manual transmission). Optional extras were plentiful, allowing buyers to customize their Mustang to their preferences. These options included power steering, power brakes, a radio, whitewall tires, and a variety of interior trim packages. Upholstery options beyond the standard black vinyl were available, including different colors and materials. A tonneau cover was a popular option for the convertible, providing a more secure and weatherproof cabin when the top was down.

Chassis & Braking

The chassis of the 1964 Mustang Convertible I was a unibody construction, providing a good balance of strength and weight. The front suspension utilized a double wishbone design with coil springs, while the rear suspension employed a traditional leaf spring setup with a solid axle. Braking duties were handled by drum brakes on all four wheels, measuring 228.6 mm in diameter. While adequate for the time, the drum brakes lacked the stopping power and fade resistance of later disc brake systems. The car’s curb weight was approximately 1243 kg (2740.35 lbs).

Market Reception & Comparison

The 1964 Mustang Convertible I was met with overwhelmingly positive reception. The combination of sporty styling, affordable pricing, and available V8 power proved irresistible to American buyers. The convertible version, in particular, was highly sought after, offering a more luxurious and enjoyable driving experience. Critics praised the Mustang’s styling and handling, although some noted the limitations of the drum brakes and the relatively basic interior. Compared to other cars in its class, such as the Chevrolet Impala Convertible and the Plymouth Belvedere Convertible, the Mustang offered a more youthful and sporty image. The six-cylinder Mustang offered better fuel economy, while the potential for future, more powerful V8 options made the 4.7L version a sweet spot for many buyers.

Technical Specifications

Legacy

The 1964 Mustang Convertible I 4.7 V8 holds a significant place in automotive history. It launched the Mustang as a cultural icon and set the standard for affordable sports cars. While early Mustangs are prone to rust and require regular maintenance, the 289 V8 engine is generally considered to be reliable and durable. Today, well-maintained examples of the 1964 Mustang Convertible I 4.7 V8 are highly collectible, commanding significant prices in the used car market. The enduring popularity of the Mustang is a testament to the success of this initial model and its contribution to American automotive culture. The simplicity of the engine and the availability of parts make it a popular choice for restoration projects, ensuring that these classic Mustangs will continue to be enjoyed for generations to come.