1975-1979 Ford F-Series F-150 VI SuperCab 4.9 300 Six (113 Hp)

The Ford F-Series F-150 VI SuperCab, specifically equipped with the 4.9-liter (299 cubic inch) inline-six engine producing 113 horsepower, represents a significant iteration in the long and storied history of Ford’s full-size pickup trucks. Produced from 1975 through 1979, this variant occupied a crucial position in the F-Series lineup, offering a balance of affordability, durability, and capability for a broad range of buyers. The “SuperCab” designation indicated an extended cab configuration, providing additional passenger space compared to the standard cab models. This generation, the sixth iteration of the F-Series, was characterized by its robust construction and focus on practical utility, solidifying the F-Series’ dominance in the American pickup truck market.

Technical Specifications

Powertrain & Engine Architecture

The heart of this F-150 variant was the 4.9-liter (299 cubic inch) inline-six engine, often referred to as the “300 Six.” This engine, a mainstay of Ford trucks for decades, was renowned for its simplicity, durability, and low-end torque. The 113 horsepower output was achieved through a single-barrel carburetor, a relatively simple fuel delivery system for the time. The engine featured a cast iron block and cylinder head, contributing to its robust nature. The valvetrain employed a traditional pushrod design, further simplifying the engine’s construction and maintenance. The 300 Six was known for its ability to withstand significant abuse and continue running reliably, making it a favorite among those who needed a dependable workhorse. The three-speed manual transmission was the standard offering, providing straightforward gear changes and a direct connection to the engine’s power.

Driving Characteristics

The 113 horsepower and 220 lb-ft of torque delivered by the 4.9-liter engine, coupled with the three-speed manual transmission, resulted in a driving experience focused on practicality rather than performance. Acceleration was modest, and the truck was not designed for rapid speeds. However, the engine’s strong low-end torque made it well-suited for hauling loads and navigating challenging terrain. The manual transmission allowed for precise control over gear selection, enabling the driver to maximize the engine’s power for specific tasks. Compared to the optional V8 engines available in the F-150, this inline-six configuration offered significantly less horsepower, but it also provided better fuel economy and a simpler mechanical layout. The gear ratios were optimized for work, prioritizing pulling power over top-end speed.

Equipment & Trim Levels

The F-150 SuperCab with the 4.9-liter engine typically represented an entry-level or mid-range trim. Standard features included a basic interior with vinyl upholstery, a simple dashboard layout, and minimal creature comforts. The SuperCab configuration added a rear seat, increasing passenger capacity. Optional extras included upgraded interior trim, a radio, and various towing packages. The focus was on providing a functional and affordable truck, rather than a luxurious one. The exterior typically featured basic chrome trim and steel wheels. The SuperCab’s extended cab offered a degree of versatility, allowing owners to transport both passengers and cargo simultaneously.

Chassis & Braking

The F-150’s chassis was built around a robust ladder frame, providing a solid foundation for hauling and towing. The front suspension utilized independent coil springs and a transverse stabilizer bar, offering a reasonable level of ride comfort. The rear suspension employed leaf springs, which were well-suited for supporting heavy loads. The braking system featured disc brakes on the front wheels and drum brakes on the rear, providing adequate stopping power for the truck’s weight class. Power steering was available as an option, making maneuvering the large truck easier, particularly at low speeds. Tire sizes typically ranged from 215/75 R15 to 225/75 R15, providing a balance of traction and ride quality.

Market Reception & Comparison

The F-150 SuperCab with the 4.9-liter engine was generally well-received by buyers seeking a dependable and affordable work truck. Critics acknowledged its durability and fuel efficiency, but noted its lack of power compared to V8-powered models. Compared to the 302 cubic inch V8, the 300 Six offered better gas mileage, but significantly less horsepower. Against the larger 351 and 460 cubic inch V8s, the 4.9L was a clear economy choice, sacrificing performance for cost savings. The inline-six was particularly popular among those who prioritized reliability and low maintenance costs over outright performance. It was often chosen by farmers, ranchers, and tradespeople who needed a truck that could withstand hard use.

Legacy

The 4.9-liter inline-six engine continued in production for many years after 1979, becoming a legendary powerplant in Ford trucks. Its simplicity and durability have made it a favorite among enthusiasts and mechanics alike. Even today, well-maintained examples of this engine can be found running reliably in older Ford trucks. The F-150 SuperCab variant with this engine holds a nostalgic appeal for many truck owners, representing a bygone era of rugged and dependable American vehicles. In the used car market, these trucks are often sought after for their affordability and potential for restoration. While not a high-performance machine, the 1975-1979 F-150 SuperCab 4.9L remains a testament to Ford’s commitment to building durable and practical trucks.