1975 Buick 455 Engine Specs
Engine Configuration
The 1975 Buick 455 engine was a V8 engine that was part of Buick’s big-block engine family. It featured a displacement of 455 cubic inches, or 7.5 liters, hence its name. This engine was commonly found in various Buick models during the 1970s, including the Buick Electra, Riviera, and LeSabre.
The 455 engine had a cast-iron block and cylinder heads, providing durability and strength. It featured a bore and stroke of 4.3125 inches by 3.900 inches, resulting in a relatively long-stroke design. This configuration allowed the engine to produce ample torque, making it suitable for both cruising and towing purposes.
Engine Oil Specs & Service Intervals
Proper engine oil is crucial for the longevity and performance of any engine, including the 1975 Buick 455. Here are the recommended engine oil specifications and service intervals for this engine:
Engine Oil Specifications:
– Oil Type: SAE 10W-30 or SAE 10W-40 (API service classification SF or SG)
– Oil Capacity: Approximately 5 quarts, including the oil filter
It is important to use high-quality engine oil that meets the specified viscosity requirements and API service classification. This ensures proper lubrication and protection for the engine components.
Service Intervals:
– Oil Change: Every 3,000 to 5,000 miles or every 3 to 6 months, whichever comes first
– Oil Filter Replacement: Every oil change
Regular oil changes are essential to maintain the engine’s health and performance. Over time, engine oil can break down and become less effective in lubricating and cooling the engine. Replacing the oil filter during each oil change helps remove contaminants and ensures clean oil circulates through the engine.
Detailed Engine Specifications
| Specification | Value |
|---|---|
| Engine Type | V8 |
| Displacement | 455 cubic inches (7.5 liters) |
| Block Material | Cast Iron |
| Cylinder Head Material | Cast Iron |
| Bore | 4.3125 inches |
| Stroke | 3.900 inches |
| Compression Ratio | 8.5:1 |
| Horsepower | 190-250 hp (depending on configuration) |
| Torque | 360-370 lb-ft (depending on configuration) |
| Fuel System | 4-barrel carburetor |
The 1975 Buick 455 engine was a powerful V8 engine known for its torque and reliability. With its solid construction and ample displacement, it provided a smooth and capable driving experience. Proper maintenance, including regular oil changes and using the recommended engine oil, is essential to keep this engine running at its best.
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