Image of 1947 Buick Series 40, Note: These illustrations use artistic license and may differ from actual historical models.

Engine Specifications
Engine:	Straight 8
Displacement:	248 cu in (4.1 L)
Horsepower:	110 hp
Torque:	Estimated 200 lb-ft
Compression Ratio:	6.5:1
Ignition System:	Distributor and coil
Cooling System:	Liquid-cooled
Performance Specifications
0-60 Time:	Estimated 15 seconds
1/4 Mile Time:	Not available
Top Speed:	80 mph
Transmission and Drive
Drive Type:	Rear-wheel drive
Transmission Type:	3-speed manual
Fuel and Efficiency
Fuel System Type:	Carburetor
MPG:	Estimated 15 mpg
Dimensions and Brakes
Brakes:	Drum brakes
Wheelbase:	124 inches
Weight:	3,600 lbs

1947 Buick Series 40: The Postwar Special

The 1947 Buick Series 40 brought Buick’s prewar engineering into America’s booming postwar market, combining a smooth straight-eight engine with substantial comfort and confident, chrome-rich styling. Known as the Buick Special, the Series 40 was the entry point to the brand’s 1947 lineup, below the Super and Roadmaster, but it was hardly a bare-bones car. Built by Buick, a division of General Motors, it offered the size, finish, and road presence buyers expected from a full-size American automobile.

The car arrived during a period of intense demand. Automakers were restarting production after wartime restrictions, and many early postwar cars were updated versions of designs developed before the war. The 1947 Special was one of them: familiar, proven, and desirable to customers eager to replace aging vehicles. One especially interesting detail is that the Series 40’s basic design traced back to Buick’s 1942 models, making the 1947 Special a snapshot of prewar engineering meeting postwar prosperity.

Chrome, Curves, and Buick Character

The Special’s exterior has the substantial, rounded look associated with late-1940s American cars. Its broad hood flows into rounded front fenders, while a prominent upright grille and bright horizontal trim give the nose a confident face. The chrome bumpers, hubcaps, side moldings, and hood ornament add sparkle without overwhelming the body’s smooth lines. It looks purposeful and formal, but not as imposing as the more expensive Roadmaster.

Inside, the Series 40 favors comfort and practicality. A broad front bench seat, generous glass area, and an upright driving position make the cabin feel open. Buick used durable cloth upholstery in many closed models, with more luxurious trim and leather appointments available in convertible versions. The dashboard typically featured painted or woodgrain-style trim, clear gauges, and a large steering wheel. It is not a modern luxury interior, but the materials and detailing gave the Special a distinctly upscale feel for an entry-level Buick.

Paint choices varied by body style and production availability, with period colors generally including dark and medium tones such as black, maroon, blue, green, gray, and tan. Deep, rich colors suited the car’s extensive chrome particularly well, and dark finishes remain popular with collectors today. Exact color names and combinations can differ by factory records and restoration references, so buyers seeking originality should check the body plate and model-specific documentation.

Series 40 Body Styles

Buick offered the 1947 Special in several body styles, including a four-door sedan, two-door sedanette, and convertible. Availability and model designation varied across the lineup. The sedanette, with its sloping fastback roof, is often the most visually distinctive closed-body version. Its flowing roofline gives the car a sportier profile than the conventional sedan, while the convertible is the open-air choice and one of the most sought-after Series 40s today.

The four-door sedan was the practical family favorite, offering easy access to both rows and a comfortable cabin for longer trips. The sedanette appealed to buyers who wanted a more stylish silhouette, while the convertible delivered the glamour and social appeal associated with postwar cruising. As with many classic cars, condition and originality matter more than body style alone, but open cars usually command a premium.

Engineering That Defined Buick

At the heart of the 1947 Buick Special is a 248-cubic-inch (about 4.1-liter) overhead-valve inline-eight. Buick promoted its overhead-valve layout as “valve-in-head” engineering, a design that helped distinguish the marque from competitors using flathead engines. In the Series 40, the straight-eight produced roughly 110 horsepower, delivering smooth, steady power rather than the sharp acceleration expected from a modern car.

Power went to the rear wheels through a conventional three-speed manual transmission, typically operated by a column-mounted shifter. The Special did not have Buick’s later Dynaflow automatic transmission, which arrived on selected 1948 models. Its chassis paired independent front suspension with coil springs and a solid rear axle, while hydraulic drum brakes handled stopping. This combination prioritized a cushioned ride and relaxed highway travel.

The Series 40 was not a radical styling or technology breakthrough by itself. Its significance lies in how it carried Buick’s established engineering and design language into the postwar years. The overhead-valve straight-eight, coil-spring ride, and carefully finished cabin helped establish the sort of smooth, substantial experience that Buick buyers came to expect. It also helped Buick meet the enormous demand for new cars at a time when factories were still transitioning back to civilian production.

How the 1947 Special Drives

Period performance depended on body style, gearing, condition, and load, but a sound 1947 Special is generally estimated to reach 60 mph from rest in roughly 20 seconds. Top speed is commonly estimated in the neighborhood of 85 to 90 mph. These figures should be treated as approximate rather than universal test results. The Buick was built for comfortable progress, not stoplight contests.

The straight-eight is the star of the driving experience. It produces a low, even engine note and delivers power smoothly as the car gathers speed. The three-speed manual requires deliberate shifts by modern standards, and the large steering wheel and unassisted controls make the driver feel closely connected to the car’s mechanical side. At low speeds, steering can feel heavy, especially when parking.

On ordinary roads, the suspension softens bumps and broken pavement effectively. The car feels settled on a straight highway, though its size, relatively narrow tires, and period suspension geometry mean it leans noticeably through winding corners. Strong crosswinds and uneven roads call for a steady hand. A well-maintained example can be pleasant on scenic drives, but it will not have the braking, grip, or precision of a contemporary vehicle.

Living With a Series 40

Today, most 1947 Specials are used for weekend cruising, local shows, parades, and club events rather than daily commuting. They can be driven regularly, but owners should account for their slower acceleration, drum brakes, higher fuel consumption, and lack of modern safety equipment. Seat belts, improved lighting, and carefully chosen brake upgrades are common considerations for owners who plan to use their cars on today’s roads.

Mechanical work is approachable for an owner familiar with older cars. The straight-eight is robust when properly maintained, and its basic mechanical systems are comparatively straightforward. Parts support is available through Buick and classic-car suppliers, although trim, body-specific pieces, and restoration-quality interior components can take more searching. Before buying, inspect the frame and body for rust, check the engine for oil pressure and cooling issues, and assess the transmission, brakes, and electrical system. A tidy-looking car can still need substantial work underneath.

1947 Buick Facts and Myths

The Series 40’s biggest historical distinction is its role as a familiar Buick offered during the postwar buying rush. It was not a special race model or a record-setting performance car. Its appeal was more everyday: a smooth eight-cylinder engine, a comfortable ride, and a well-appointed cabin at a lower price than Buick’s larger series.

There is no widely recognized, Series 40-specific speed or endurance record to define the 1947 model. Nor should every 1947 Buick seen in a film or period photograph be assumed to be a Special: the year’s Buick lineup included several series with similar styling. The Special’s fastback sedanette is a frequent favorite in classic-car displays because its roofline gives the car an unmistakably late-1940s profile.

A common criticism is that the car feels slow and heavy by modern standards. Its drum brakes and old-fashioned handling also require more planning than a modern driver may expect. Those are fair limitations, but they are part of the period experience. The Special’s appeal is its smooth, unhurried character, not sports-car agility.

Collector Values and Availability

Production estimates for the 1947 Series 40 are generally in the range of about 150,000 cars across its body styles. That is a broad estimate rather than a count of surviving vehicles, and individual body styles were produced in different numbers. Sedans are usually easier to find than convertibles, while complete, original cars are increasingly attractive to collectors looking for a usable restoration candidate.

As a general U.S. market guide, a project car may sell for roughly $8,000 to $15,000, depending on completeness and rust. A running driver or presentable older restoration might fall around $15,000 to $30,000. High-quality restorations can reach approximately $30,000 to $50,000, while an especially appealing convertible can exceed that range, sometimes reaching $50,000 to $80,000 or more. These are broad estimates, not guaranteed sale prices; location, originality, documentation, and restoration quality make a major difference.

Values tend to reward condition and desirable body styles rather than simply rising with age. A sound, well-documented convertible is likely to attract more interest than a rough sedan, but the market for full-size postwar cars can be selective. For buyers, that can mean good value compared with more famous prewar classics. For sellers, a careful restoration and clear records are often more persuasive than expensive cosmetic changes that reduce originality.

Why the 1947 Buick Special Still Matters

The 1947 Buick Series 40 is a handsome bridge between two eras: a prewar design refreshed for a country ready to get back on the road. Its straight-eight engine, cushioned ride, generous cabin, and distinctive sedanette styling capture Buick’s idea of attainable refinement. It may not be fast or modern, but it offers something more enduring: an unmistakable sense of postwar optimism, delivered one smooth mile at a time.