The DeSoto Fireflite III Four-Door Sedan, as presented in its 1959 facelift, represented a pinnacle of American automotive styling and power during the late 1950s. Produced for the 1958 and 1959 model years, this iteration of the Fireflite occupied a significant position within the DeSoto lineup, offering a blend of luxury, performance, and spaciousness. It was part of the broader effort by Chrysler Corporation to revitalize the DeSoto brand, positioning it as a step above Plymouth but below Dodge in terms of price and features. The 1959 model year saw a substantial restyling, characterized by more pronounced tailfins and a generally bolder aesthetic, reflecting the design trends of the era. This particular variant, equipped with the 6.3-liter V8 engine and TorqueFlite automatic transmission, was a popular choice for buyers seeking a comfortable and powerful full-size sedan.
Technical Specifications
| Brand | DeSoto |
| Model | Fireflite |
| Generation | Fireflite III Four-Door Sedan (facelift 1959) |
| Type (Engine) | 6.3 V8 (325 Hp) TorqueFlite |
| Start of production | 1958 |
| End of production | 1959 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 6 |
| Doors | 4 |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 5.8 kg/Hp, 173.2 Hp/tonne |
| Weight-to-torque ratio | 3.3 kg/Nm, 307 Nm/tonne |
| Power | 325 Hp @ 4600 rpm |
| Power per litre | 51.8 Hp/l |
| Torque | 576 Nm @ 2800 rpm, 424.84 lb.-ft. @ 2800 rpm |
| Engine displacement | 6276 cm3, 382.99 cu. in. |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 107.95 mm, 4.25 in. |
| Piston Stroke | 85.85 mm, 3.38 in. |
| Compression ratio | 10.1:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Carburettor |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | OHV |
| Engine oil capacity | 4.7 l, 4.97 US qt | 4.14 UK qt |
| Coolant | 15.1 l, 15.96 US qt | 13.29 UK qt |
| Kerb Weight | 1876 kg, 4135.87 lbs |
| Fuel tank capacity | 87 l, 22.98 US gal | 19.14 UK gal |
| Length | 5616 mm, 221.1 in |
| Width | 1999 mm, 78.7 in |
| Height | 1450 mm, 57.09 in |
| Wheelbase | 3200 mm, 125.98 in |
| Front track | 1549 mm, 60.98 in |
| Rear (Back) track | 1516 mm, 59.69 in |
| Front overhang | 889 mm, 35 in |
| Rear overhang | 1527 mm, 60.12 in |
| Ride height (ground clearance) | 142 mm, 5.59 in |
| Minimum turning circle (turning diameter) | 15.2 m, 49.87 ft |
| Approach angle | 15° |
| Departure angle | 11° |
| Ramp-over (brakeover) angle | 10.4° |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 3 gears, automatic transmission TorqueFlite |
| Front suspension | Independent torsion bar, double wishbone |
| Rear suspension | Leaf spring |
| Front brakes | Drum, 305 mm |
| Rear brakes | Drum, 305 mm |
| Steering type | Worm-reduction unit |
Powertrain & Engine Architecture
The heart of the 1959 Fireflite was the Chrysler-built 6.3-liter (383 cubic inch) V8 engine. This engine, designated with various codes depending on specific configurations, produced 325 horsepower at 4,600 rpm and a substantial 576 Nm (424.84 lb-ft) of torque at 2,800 rpm. The engine utilized a cast iron block and cylinder heads, with a conventional overhead valve (OHV) valvetrain. Fuel delivery was managed by a Carter carburetor, a common setup for the time. The 10.1:1 compression ratio contributed to the engine’s robust power output. Paired with this engine was the Chrysler TorqueFlite three-speed automatic transmission, known for its smoothness and durability. This transmission was a key component in providing a comfortable driving experience, particularly suited for the Fireflite’s intended role as a luxury cruiser.
Driving Characteristics
The combination of the 325 hp V8 and the TorqueFlite automatic resulted in a driving experience focused on effortless cruising and strong acceleration. While not a performance-oriented vehicle in the modern sense, the Fireflite offered ample power for highway passing and merging. The TorqueFlite transmission, with its relatively simple three-speed configuration, prioritized smooth shifts over outright speed. Compared to the manual transmission options available on other DeSoto models, the automatic version traded some responsiveness for convenience. The substantial weight of the vehicle (1876 kg or 4135.87 lbs) meant that handling was not particularly nimble, but the torsion bar front suspension and leaf spring rear suspension provided a reasonably comfortable ride.
Equipment & Trim Levels
The Fireflite III Four-Door Sedan was well-equipped for its time, offering a range of standard features designed to appeal to buyers seeking a comfortable and luxurious vehicle. Standard equipment typically included power steering, power brakes, a heater, and a spacious interior upholstered in cloth and vinyl. The 1959 facelift brought updated interior trim options, with a focus on brighter colors and more elaborate patterns. Optional extras included air conditioning, a radio, power windows, and whitewall tires. The Fireflite occupied a mid-range position within the DeSoto lineup, offering more features and refinement than the base-model Adventurer but falling short of the top-of-the-line Firesweep in terms of exclusivity and price.
Chassis & Braking
The Fireflite III rode on a sturdy chassis featuring independent torsion bar suspension at the front and a traditional leaf spring setup at the rear. This suspension configuration aimed to balance ride comfort with handling stability. Braking duties were handled by drum brakes on all four wheels, measuring 305 mm in diameter. While adequate for the time, the drum brakes lacked the stopping power and fade resistance of modern disc brake systems. Steering was accomplished via a worm-reduction unit, which provided relatively heavy but precise steering feel.
Market Reception & Comparison
The 1959 DeSoto Fireflite received generally positive reviews from automotive critics, who praised its stylish design, powerful engine, and comfortable ride. However, it also faced criticism for its large size, relatively poor fuel economy, and somewhat dated technology. Compared to other full-size American sedans of the era, such as the Chevrolet Impala and the Ford Fairlane, the Fireflite offered a similar level of luxury and performance, but at a slightly higher price point. The automatic transmission version was particularly popular with buyers who prioritized convenience over outright performance.
Legacy
The DeSoto Fireflite III, particularly the 1959 model, holds a significant place in automotive history as a representative of the flamboyant styling and powerful engines that characterized the late 1950s. While DeSoto as a brand ultimately ceased production in 1961, the Fireflite remains a sought-after classic car among collectors and enthusiasts. The 6.3-liter V8 engine and TorqueFlite transmission, while not known for exceptional reliability compared to some later Chrysler designs, are generally considered durable and relatively easy to maintain. Today, well-preserved examples of the 1959 Fireflite command respectable prices in the used car market, reflecting their historical significance and enduring appeal.
