1968-1972 Ford F-Series F-100 V 6.4 390 V8 (255 Hp)

The Ford F-Series F-100, specifically the variant equipped with the 6.4-liter (390 cubic inch) V8 engine producing 255 horsepower, represents a significant iteration of Ford’s long-running and immensely popular pickup truck line. Produced between 1968 and 1972, this version falls within the fifth generation of the F-Series (often referred to as the F-100 V generation), a period marked by styling refinements and increased capability. This particular configuration occupied a middle ground in the F-100 lineup, offering a substantial power upgrade over the inline-six cylinder options while remaining more accessible than the larger displacement V8s available. It was aimed at buyers needing a robust work truck capable of handling demanding tasks, but who didn’t necessarily require the ultimate towing or hauling capacity.

Technical Specifications

Powertrain & Engine Architecture

The heart of this F-100 variant is the 6.4-liter (390 cubic inch) Ford V8, designated within the Ford family as the FE engine. This engine, a mainstay of Ford’s lineup for many years, is a pushrod V8 featuring a cast iron block and cylinder heads. The 255 horsepower rating was achieved through the use of a two-barrel carburetor, a relatively conservative camshaft profile, and 8.6:1 compression ratio. The engine’s design prioritized low-end torque, making it well-suited for the demands of truck work. The 390 cu. in. engine utilized a hydraulic lifter valvetrain, contributing to its reliability and reduced maintenance requirements. The standard transmission for this configuration was a three-speed manual, although a three-speed automatic transmission (Ford C6) was also available as an option. The automatic, while offering convenience, did slightly diminish the engine’s overall performance due to parasitic losses.

Driving Characteristics

The 1968-1972 F-100 with the 390 V8 and manual transmission provided a robust and capable driving experience. Acceleration was brisk for a truck of its size, and the engine delivered ample torque for hauling and towing. The three-speed manual gearbox offered precise control, allowing the driver to effectively utilize the engine’s power band. The automatic transmission, while smoother, resulted in a noticeable reduction in responsiveness. The truck’s suspension, while designed for load-carrying, provided a reasonably comfortable ride when unladen. Steering was accomplished through a recirculating ball system, which offered a solid feel but required more effort than modern power steering setups. Overall, this variant offered a good balance between work capability and everyday usability.

Equipment & Trim Levels

The F-100 was offered in a variety of trim levels, ranging from basic work trucks to more comfortable “Custom” models. The 390 V8 engine was typically paired with the mid-range trim packages. Standard features included a basic vinyl bench seat, a simple dashboard with essential gauges, and a sturdy rubber floor mat. Optional extras included a more luxurious cloth or vinyl upholstery, a radio, heater and defroster, and various chrome trim pieces. The “Custom” trim added features like a woodgrain-accented dashboard, upgraded seat materials, and exterior brightwork. The interior was functional and durable, designed to withstand the rigors of daily use.

Chassis & Braking

The F-100 chassis was a traditional body-on-frame construction, providing a robust and durable platform. The front suspension utilized independent coil springs, while the rear suspension employed leaf springs. This setup offered a good balance between ride comfort and load-carrying capacity. Braking was accomplished through drum brakes on all four wheels. While adequate for the truck’s weight and intended use, the drum brakes lacked the stopping power and fade resistance of disc brakes. Power steering was available as an option, making maneuvering the truck easier, particularly at low speeds. The truck’s tires were typically bias-ply, offering good durability but less grip than modern radial tires.

Market Reception & Comparison

The 1968-1972 F-100 with the 390 V8 was generally well-received by both critics and buyers. It was praised for its robust construction, ample power, and overall reliability. Compared to the smaller inline-six cylinder engines, the 390 V8 offered a significant performance upgrade, making it a popular choice for those who needed to tow or haul heavy loads. Compared to the larger displacement V8s (such as the 390 and 428 cubic inch engines), the 390 offered a more affordable price point and slightly better fuel economy. However, it did lack the ultimate power and towing capacity of its larger siblings. Fuel economy, even for the era, was relatively poor, averaging around 12-15 miles per gallon.

Legacy

The Ford F-100 with the 390 V8 has become a popular choice among classic truck enthusiasts. The FE engine family is known for its durability and relative simplicity, making it a relatively easy engine to maintain and repair. Parts availability remains good, although some components can be difficult to find. These trucks are often sought after for restoration projects, and well-maintained examples command a premium price in the used car market. The 390 V8, while not the most powerful engine offered in the F-100, is considered a reliable and capable powerplant that provides a satisfying driving experience. Its blend of power, durability, and relative affordability has cemented its place as a classic American work truck.