The Ford F-Series F-250 VIII Regular Cab, equipped with the 4.9-liter (300 cubic inch) inline-six engine producing 150 horsepower and a four-wheel-drive drivetrain, was a mainstay of Ford’s heavy-duty truck lineup from 1988 to 1991. This configuration represented a work-focused, value-oriented offering within the eighth generation (1987-1991) of the F-Series, a generation known for its robust construction and incremental improvements over its predecessor. The F-250, positioned above the F-150, catered to buyers needing greater towing and payload capacity, and the 4.9L engine/4×4 combination was a popular choice for those prioritizing durability and affordability over outright performance.
Technical Specifications
| Brand | Ford |
| Model | F-Series F-250 |
| Generation | F-Series F-250 VIII Regular Cab |
| Type (Engine) | 4.9 300 Six (150 Hp) 4×4 |
| Start of production | 1988 |
| End of production | 1991 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 3 |
| Doors | 2 |
| Fuel Type | Petrol (Gasoline) |
| Power | 150 Hp @ 3400 rpm |
| Power per litre | 30.5 Hp/l |
| Torque | 353 Nm @ 2000 rpm / 260.36 lb.-ft. @ 2000 rpm |
| Engine layout | Front, Longitudinal |
| Engine displacement | 4916 cm3 / 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. |
| Compression ratio | 8.8:1 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Max. weight | 3084 kg / 6799.06 lbs. |
| Fuel tank capacity | 69 l / 18.23 US gal | 15.18 UK gal |
| Length | 5339 mm / 210.2 in. |
| Width | 1778 mm / 70 in. |
| Height | 1923 mm / 75.71 in. |
| Wheelbase | 3378 mm / 132.99 in. |
| Wading depth | 869 mm / 34.21 in. |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels permanently, and the front wheels are driven through an electrically or mechanically operated clutch if necessary. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 5 gears, manual transmission |
| Front suspension | Leaf spring |
| Rear suspension | Leaf spring |
| Front brakes | Disc |
| Rear brakes | Drum |
| Power steering | Electric Steering |
| Tires size | 215/85 R16 |
| Wheel rims size | 6J x 16 |
Powertrain & Engine Architecture
The heart of this F-250 variant was the 4.9-liter inline-six engine, often referred to as the “300 Six.” This engine, a long-stroke design, was renowned for its exceptional durability and low-end torque. It featured a cast-iron block and cylinder head, and a relatively simple valvetrain with a single overhead camshaft. Fuel delivery was handled by a multi-port fuel injection system, a significant upgrade from the carburetor-equipped engines of earlier F-Series generations. The 300 Six produced 150 horsepower at 3400 rpm and 353 Nm (260.36 lb-ft) of torque at 2000 rpm. The engine’s longitudinal mounting and rear-wheel-drive bias, coupled with a mechanically engaged four-wheel-drive system, provided robust traction for work applications. The standard transmission was a 5-speed manual, contributing to the truck’s utilitarian character.
Driving Characteristics
The 150 hp 4.9L engine in the F-250, paired with the 5-speed manual transmission, delivered a driving experience focused on capability rather than speed. Acceleration was modest, and the truck wasn’t designed for quick sprints. However, the engine’s strong low-end torque made it well-suited for hauling heavy loads and navigating challenging terrain. The manual transmission provided precise control, especially useful when towing or driving off-road. Compared to the available V8 engines (such as the 351 Windsor or 460), this inline-six offered less peak power but superior fuel economy and a simpler, more reliable mechanical layout. The 4×4 system, engaged manually, provided enhanced traction in slippery conditions, making it a popular choice for rural and agricultural applications.
Equipment & Trim Levels
The F-250 VIII Regular Cab with the 4.9L engine and 4×4 drivetrain typically represented the entry-level configuration for the heavy-duty F-Series. Standard equipment was relatively basic, reflecting its work-truck orientation. It generally included a vinyl bench seat, a basic AM radio, and minimal exterior trim. Optional extras included air conditioning, a more powerful radio, upgraded interior trim, and various towing packages. The Regular Cab configuration featured a single row of seating, prioritizing cargo space over passenger comfort. The interior was functional and durable, designed to withstand the rigors of daily use.
Chassis & Braking
The F-250’s chassis was built for heavy-duty work. It featured a robust ladder frame construction and heavy-duty leaf spring suspension at both the front and rear. This suspension setup prioritized load-carrying capacity and durability over ride comfort. The front brakes were discs, providing adequate stopping power, while the rear brakes were drums. Power steering was standard, making the truck easier to maneuver, especially at low speeds. The tires, typically 215/85 R16, were designed for durability and all-terrain capability. The truck’s relatively simple suspension and braking systems contributed to its overall reliability and ease of maintenance.
Market Reception & Comparison
The 4.9L/4×4 F-250 was well-received by buyers who prioritized affordability, durability, and capability over luxury or performance. Critics acknowledged the engine’s reliability and strong low-end torque, but noted its modest horsepower output. Compared to the V8-powered F-250s, this variant offered better fuel economy, making it a more economical choice for those who didn’t require the extra power. It was often favored by farmers, ranchers, and tradespeople who needed a dependable work truck that could handle demanding tasks. The manual transmission was seen as a plus by those who preferred greater control, but some buyers opted for the available automatic transmission for added convenience.
Legacy
The 4.9-liter inline-six engine gained a legendary reputation for its longevity and reliability. Many examples of this engine are still in service today, often with hundreds of thousands of miles on the odometer. The F-250 VIII Regular Cab with this powertrain remains a popular choice among collectors and enthusiasts who appreciate its simplicity, durability, and classic American truck styling. In the used car market, these trucks are often sought after for their affordability and potential for restoration or modification. While not the fastest or most luxurious truck of its era, the 4.9L/4×4 F-250 represents a solid and dependable workhorse that has stood the test of time.
