1973 Buick 455 Engine Specs
Engine Configuration
The 1973 Buick 455 engine was a powerful and reliable V8 engine that was widely used in various Buick models during that era. Let’s take a closer look at its specifications and configuration.
The 455 engine was a big-block V8 engine, meaning it had a larger displacement compared to smaller engines like the 350 or 400. It had a displacement of 455 cubic inches, which is equivalent to 7.5 liters. This large displacement allowed the engine to produce ample power and torque, making it a popular choice among performance enthusiasts.
The engine featured a cast-iron block and cylinder heads, providing durability and strength. It had a bore and stroke of 4.31 inches by 3.90 inches, resulting in a relatively long stroke that contributed to its torque output. The compression ratio for the 455 engine was 8.5:1, which was relatively low compared to some other engines of that time. This lower compression ratio was designed to accommodate lower-octane fuels commonly available during the 1970s.
Engine Oil Specs & Service Intervals
Proper engine maintenance is crucial to keep the 1973 Buick 455 engine running smoothly. One essential aspect of maintenance is using the correct engine oil and following the recommended service intervals. Let’s delve into the engine oil specifications and service intervals for the Buick 455 engine.
The recommended engine oil for the 1973 Buick 455 engine is a high-quality, multi-viscosity oil with a viscosity of 10W-30. This oil provides excellent lubrication and protection for the engine components, ensuring optimal performance and longevity. It is important to use oil that meets the API (American Petroleum Institute) service classification of SF or higher.
When it comes to service intervals, it is generally recommended to change the engine oil and oil filter every 3,000 miles or every three months, whichever comes first. Regular oil changes help remove contaminants and maintain proper lubrication, which is vital for the engine’s health. Additionally, it is advisable to check the oil level regularly and top it up if necessary, following the manufacturer’s guidelines.
To ensure the engine operates at its best, it is also important to perform other routine maintenance tasks, such as checking and replacing the air filter, inspecting the spark plugs, and maintaining proper coolant levels. Following the recommended service intervals and using high-quality fluids and filters will help keep the 1973 Buick 455 engine in top shape for years to come.
Detailed Engine Specifications
| Engine | 1973 Buick 455 V8 |
|---|---|
| Displacement | 455 cubic inches (7.5 liters) |
| Configuration | V8 |
| Block Material | Cast Iron |
| Cylinder Head Material | Cast Iron |
| Bore x Stroke | 4.31 inches x 3.90 inches |
| Compression Ratio | 8.5:1 |
| Recommended Oil Viscosity | 10W-30 |
| Recommended Oil Classification | API SF or higher |
| Service Interval | Every 3,000 miles or 3 months |
In conclusion, the 1973 Buick 455 engine was a powerful V8 engine that offered impressive performance and reliability. With its large displacement and durable construction, it became a popular choice for Buick enthusiasts. By following the recommended engine oil specifications and service intervals, owners can ensure that their 455 engine continues to deliver optimal performance and longevity. Regular maintenance is key to keeping this classic engine running smoothly for years to come.
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