The Ford F-Series F-100 VI SuperCab, equipped with the 4.9-liter (300 cubic inch) inline-six engine producing 113 horsepower and paired with a three-speed Cruise-O-Matic automatic transmission, represents a significant iteration of Ford’s long-running and immensely popular pickup truck line. Produced from 1975 through 1979, this configuration occupied a middle ground within the F-100 range, offering a balance between affordability, capability, and convenience. The “SuperCab” designation indicated an extended cab configuration, providing additional passenger space compared to the standard cab models. This variant played a crucial role in Ford’s dominance of the American pickup truck market during the late 1970s, catering to buyers who needed a versatile vehicle for both work and family use.
Technical Specifications
| Brand | Ford |
| Model | F-Series F-100/F-150 |
| Generation | F-Series F-100 VI SuperCab |
| Type (Engine) | 4.9 300 Six (113 Hp) Automatic |
| Start of production | 1975 |
| End of production | 1979 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 6 |
| Doors | 2 |
| Fuel Type | Petrol (Gasoline) |
| Power | 113 Hp |
| Power per litre | 23 Hp/l |
| Engine displacement | 4916 cm3 |
| Engine displacement (cu. in.) | 299.99 cu. in. |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 101.6 mm (4 in.) |
| Piston Stroke | 101.09 mm (3.98 in.) |
| Fuel injection system | Carburettor |
| Engine aspiration | Naturally aspirated engine |
| Max. weight | 2585 kg (5698.95 lbs.) |
| Trunk (boot) space – minimum | 1727-2084 l (60.99 – 73.6 cu. ft.) |
| Fuel tank capacity | 73 l (19.28 US gal | 16.06 UK gal) |
| Length | 5362-5773 mm (211.1 – 227.28 in.) |
| Wheelbase | 3531-3937 mm (139.02 – 155 in.) |
| Wading depth | 622-630 mm (24.49 – 24.8 in.) |
| 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 Cruise-O-Matic |
| Front suspension | Independent coil spring |
| Rear suspension | Leaf spring |
| Front brakes | Disc |
| Rear brakes | Drum |
| Power steering | Electric Steering |
| Tires size | 215/75 R15; 225/75 R15 |
| Wheel rims size | 7J x 15 |
Powertrain & Engine Architecture
The heart of this F-100 variant is Ford’s 4.9-liter (300 cubic inch) inline-six engine. This engine, known internally as the 300 I6, was a mainstay of Ford’s truck and van lineup for decades, renowned for its durability and low-end torque. The 1975-1979 version typically employed a two-barrel carburetor for fuel delivery, a relatively simple system compared to fuel injection, but reliable and easy to maintain. The engine featured a cast iron block and head, contributing to its robust nature. The valvetrain utilized a conventional pushrod design. The three-speed Cruise-O-Matic automatic transmission was a Ford-built unit, designed to provide smooth and relatively efficient shifting. It wasn’t known for its sporty performance, but it was well-suited to the truck’s intended purpose of hauling and towing. The transmission’s gear ratios were optimized for maximizing torque multiplication at lower speeds.
Driving Characteristics
The 113 horsepower and approximately 220 lb-ft of torque delivered by the 4.9-liter engine and Cruise-O-Matic transmission resulted in a driving experience focused on practicality rather than performance. Acceleration was modest, and passing maneuvers required planning. Compared to the available V8 engines (302 and 351 cubic inch), the 300 I6 offered significantly less power. However, the inline-six provided a broader, flatter torque curve, making it more capable of handling heavy loads and navigating challenging terrain at lower speeds. The automatic transmission, while convenient, did sap some power compared to the available manual transmissions. The gear ratios were spaced to prioritize towing and hauling, rather than quick acceleration. The SuperCab configuration added weight, further impacting performance, but also provided increased interior space.
Equipment & Trim Levels
The F-100 SuperCab with the 4.9-liter engine and automatic transmission typically fell into the mid-range of Ford’s trim level offerings. Standard equipment included a basic vinyl interior, a simple dashboard layout, and a functional, no-frills approach to interior design. The SuperCab added a rear bench seat, increasing passenger capacity. Optional extras included upgraded interior trim, air conditioning, a radio, and various exterior enhancements like chrome bumpers and trim. The F-100 was primarily marketed as a work truck, so luxury features were generally kept to a minimum, even as options. The focus was on providing a durable and reliable vehicle that could withstand the rigors of daily use.
Chassis & Braking
The F-100 VI SuperCab utilized a body-on-frame construction, typical of trucks of this era. The front suspension employed independent coil springs, providing a relatively comfortable ride for a truck. The rear suspension consisted of leaf springs, designed to handle heavy loads. The braking system featured disc brakes on the front wheels and drum brakes on the rear. Power steering was often included, making maneuvering the large truck easier, especially at low speeds. Tire sizes typically ranged from 215/75R15 to 225/75R15, providing a balance between ride comfort and load-carrying capacity. The chassis was designed to be robust and durable, capable of withstanding the stresses of hauling and towing.
Market Reception & Comparison
The F-100 SuperCab with the 4.9-liter engine and automatic transmission was generally well-received by buyers seeking a versatile and affordable pickup truck. Critics noted its durability and reliability, but also acknowledged its modest performance. Compared to the V8-powered F-100s, this configuration offered better fuel economy, a significant consideration during the late 1970s energy crisis. However, the V8s provided substantially more power for those who needed it. The 300 I6 automatic was often favored by buyers who prioritized fuel efficiency and ease of use over outright performance. It was a popular choice for those who used their trucks for light-duty work and occasional towing.
Legacy
The Ford 300 I6 engine, in all its iterations, has earned a reputation as one of the most reliable and long-lasting engines ever produced. Many examples are still on the road today, a testament to its robust design and durability. The 1975-1979 F-100 SuperCab with the 4.9-liter engine and automatic transmission remains a popular choice among classic truck enthusiasts. Parts availability is generally good, and the engine is relatively easy to maintain. While not a high-performance vehicle, it offers a unique blend of practicality, durability, and affordability. In the used car market, these trucks are often sought after for their simplicity and ruggedness, representing a bygone era of American automotive engineering.
