Ford 390 ci Engine Specs
The Ford 390 cubic inch (ci) engine was a popular V8 engine produced by Ford Motor Company from 1961 to 1976. It was part of the FE (Ford-Edsel) engine family and was used in various Ford vehicles during that time period. Let’s take a closer look at the specifications of this iconic engine.
Engine Configuration
- Engine Type: V8
- Displacement: 390 cubic inches (6.4 liters)
- Bore x Stroke: 4.05″ x 3.78″
- Compression Ratio: 9.6:1 (standard), 10.5:1 (high-performance)
- Fuel System: Carbureted
- Valvetrain: Overhead Valve (OHV)
The Ford 390 ci engine featured a V8 configuration, meaning it had eight cylinders arranged in a V shape. With a displacement of 390 cubic inches or 6.4 liters, this engine provided ample power for a variety of Ford vehicles.
The bore and stroke of the Ford 390 ci engine were 4.05 inches and 3.78 inches, respectively. These measurements determine the size of the cylinders and the distance the piston travels within them. The compression ratio, which affects the engine’s performance and efficiency, was 9.6:1 for the standard version and 10.5:1 for the high-performance variant.
As a carbureted engine, the Ford 390 ci relied on a carburetor to mix air and fuel for combustion. This traditional fuel delivery system was commonly used during that era.
The valvetrain of the Ford 390 ci engine was an Overhead Valve (OHV) design. This means that the engine had its valves located in the cylinder head, above the combustion chamber. The OHV design allows for efficient airflow and improved performance.
Engine Oil Specs & Service Intervals
Proper engine oil selection and regular maintenance are crucial for the longevity and performance of any engine, including the Ford 390 ci. Here are the recommended engine oil specifications and service intervals for this engine:
- Engine Oil Type: SAE 10W-30 or SAE 10W-40
- Oil Capacity: Approximately 5 quarts (including filter)
- Oil Change Interval: Every 3,000 to 5,000 miles or every 3 to 6 months
The Ford 390 ci engine is compatible with both SAE 10W-30 and SAE 10W-40 engine oils. These multi-viscosity oils provide good lubrication and protection across a wide range of temperatures. It is important to choose an oil that meets the engine manufacturer’s specifications and follow the recommended viscosity for your climate conditions.
The oil capacity of the Ford 390 ci engine is approximately 5 quarts, including the oil filter. It is essential to maintain the proper oil level to ensure proper lubrication and cooling of the engine components.
Regular oil changes are vital to keep the engine running smoothly. It is generally recommended to change the engine oil every 3,000 to 5,000 miles or every 3 to 6 months, whichever comes first. However, it is always best to consult the owner’s manual or follow the manufacturer’s recommendations for the specific vehicle.
Detailed Engine Specifications
| Specification | Value |
|---|---|
| Engine Type | V8 |
| Displacement | 390 cubic inches (6.4 liters) |
| Bore x Stroke | 4.05″ x 3.78″ |
| Compression Ratio | 9.6:1 (standard), 10.5:1 (high-performance) |
| Fuel System | Carbureted |
| Valvetrain | Overhead Valve (OHV) |
| Oil Type | SAE 10W-30 or SAE 10W-40 |
| Oil Capacity | Approximately 5 quarts (including filter) |
| Oil Change Interval | Every 3,000 to 5,000 miles or every 3 to 6 months |
The Ford 390 ci engine holds a special place in automotive history. Its powerful performance and reliability made it a favorite among enthusiasts and car owners alike. By understanding its specifications and following proper maintenance practices, you can ensure that your Ford 390 ci engine continues to deliver the performance and enjoyment it was designed for.
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