The Ford F-100, part of the broader F-Series lineup, occupied a crucial role in the American pickup truck market from 1953 to 1972, and then again as the F-150 from 1973 onwards. The sixth generation, produced from 1973 to 1976, represented a significant redesign, offering increased size, comfort, and capability. Within this generation, the F-100 with the 6.4-liter (390 cubic inch) V8 engine paired with an automatic transmission was a popular, though not top-tier, configuration. It aimed to balance power with affordability and ease of use, appealing to buyers who needed a robust work truck without the expense of the larger engine options.
Technical Specifications
| Brand | Ford |
| Model | F-Series F-100/F-150 |
| Generation | F-Series F-100 VI Regular Cab |
| Type (Engine) | 6.4 390 V8 (160 Hp) Automatic |
| Start of production | 1973 |
| End of production | 1976 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 3 |
| Doors | 2 |
| Fuel Type | Petrol (Gasoline) |
| Power | 160 Hp |
| Power per litre | 25 Hp/l |
| Engine displacement | 6391 cm3 |
| Engine displacement (cu. in.) | 390 cu. in. |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 102.87 mm (4.05 in.) |
| Piston Stroke | 96.01 mm (3.78 in.) |
| Fuel injection system | Carburettor |
| Engine aspiration | Naturally aspirated engine |
| Max. weight | 2495 kg (5500.53 lbs.) |
| Trunk (boot) space – minimum | 1713-2084 l (60.49 – 73.6 cu. ft.) |
| Length | 4803-5215 mm (189.09 – 205.31 in.) |
| Wheelbase | 2972-3378 mm (117.01 – 132.99 in.) |
| Wading depth | 630 mm (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 |
| Steering type | Cone worm with recirculation balls |
| 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 was the 6.4-liter (390 cubic inch) Ford V8 engine. This engine, designated within Ford’s engine family as a member of the FE series, was a robust and relatively simple design. It featured a cast iron block and cylinder heads, and utilized a two-barrel carburetor for fuel delivery. The 390 V8 produced 160 horsepower and approximately 300 lb-ft of torque. While not the most powerful engine available in the F-Series (the 390 could be optioned with higher output versions, and larger displacement engines like the 460 were also available), it provided adequate power for most typical pickup truck duties. The engine’s valvetrain employed a hydraulic lifter camshaft, reducing the need for frequent valve adjustments. The automatic transmission was a Ford Cruise-O-Matic, a three-speed unit known for its durability and smooth operation. This transmission was a popular choice for buyers who preferred the convenience of an automatic over a manual gearbox.
Driving Characteristics
The F-100 with the 390 V8 and Cruise-O-Matic offered a comfortable and capable driving experience, though it wasn’t designed for outright speed. The automatic transmission’s gear ratios were optimized for towing and hauling, rather than acceleration. Acceleration from a standstill was adequate, but the truck felt most comfortable cruising at highway speeds. The 390 V8 provided sufficient torque for hauling moderate loads, but heavier loads would require more careful throttle management. Compared to the manual transmission versions of the same engine, the automatic offered less direct control and slightly reduced fuel economy. However, it provided a more relaxed driving experience, particularly in stop-and-go traffic. Compared to the larger 460 cubic inch V8, the 390 felt less powerful, especially when fully loaded, but it was also lighter and more fuel-efficient.
Equipment & Trim Levels
The F-100 in this configuration typically fell into the mid-range of available trim levels. Standard features included a basic vinyl bench seat, a simple dashboard with essential gauges (speedometer, fuel gauge, temperature gauge), and a basic AM radio. Options included upgraded interior trim, a more powerful radio, air conditioning, and power steering. The exterior typically featured minimal chrome trim, with a focus on functionality over aesthetics. Buyers could choose from a variety of paint colors, but the overall emphasis was on durability and practicality. The F-100’s cab was relatively spacious for the time, offering comfortable seating for three passengers.
Chassis & Braking
The F-100’s chassis was a traditional body-on-frame construction, providing a robust and durable platform. The front suspension utilized independent coil springs, offering a relatively comfortable ride. The rear suspension employed leaf springs, which were well-suited for carrying heavy loads. Braking duties were handled by disc brakes at the front and drum brakes at the rear. Power steering was an available option, making maneuvering the large truck easier, especially at low speeds. The tires were typically bias-ply tires, sized 215/75 R15 or 225/75 R15, providing adequate traction for most road conditions.
Market Reception & Comparison
The F-100 with the 390 V8 and automatic transmission was generally well-received by buyers who needed a capable and reliable work truck. Critics praised the engine’s durability and the transmission’s smooth operation. However, some noted that the engine lacked the power of the larger V8 options. Fuel economy was also a concern, as with most trucks of this era. Compared to the six-cylinder F-100 models, the 390 V8 offered significantly more power, but at the cost of increased fuel consumption. Compared to the F-250 and F-350 models, the F-100 was lighter and more maneuverable, making it a better choice for everyday use.
Legacy
The 1973-1976 Ford F-100 with the 390 V8 and automatic transmission remains a popular choice among classic truck enthusiasts today. The 390 V8 is known for its reliability and relative simplicity, making it a relatively easy engine to maintain and repair. Parts availability is generally good, although some components may be difficult to find. These trucks are often sought after for restoration projects, and well-maintained examples can command a premium price in the used car market. The combination of a robust V8 engine, a comfortable automatic transmission, and a durable chassis has ensured that these trucks continue to be appreciated for their practicality and enduring appeal.
