1973 Buick 350 Engine: Specs, Configuration, and Maintenance

1973 Buick 350 Engine Specs

Engine Configuration

The 1973 Buick 350 engine was a V8 engine that was part of the Buick’s longstanding V8 engine family. It featured a displacement of 350 cubic inches, or 5.7 liters, and was commonly referred to as the Buick 350. The engine had a bore of 3.80 inches and a stroke of 3.85 inches, resulting in a compression ratio of 8.5:1. It was equipped with a two-barrel carburetor and had a single exhaust system.

Engine Oil Specs & Service Intervals

Proper engine oil specifications and regular maintenance are crucial for the optimal performance and longevity of any engine, including the 1973 Buick 350. Here are the recommended engine oil specifications and service intervals for the Buick 350:

Engine Oil Specifications

To ensure proper lubrication and protection, it is important to use the correct engine oil for your Buick 350. The recommended engine oil specifications for the 1973 Buick 350 are as follows:

– Oil Type: SAE 10W-30 or SAE 10W-40
– API Service Classification: SG or higher
– Oil Capacity: Approximately 5 quarts (including oil filter)

Using the correct oil viscosity and meeting the API service classification requirements will help maintain the engine’s performance and protect it from wear and tear.

Service Intervals

Regular maintenance is essential to keep your Buick 350 engine running smoothly. Here are the recommended service intervals for the 1973 Buick 350:

1. Oil Change: It is 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 ensure proper lubrication.

2. Spark Plug Replacement: Replace the spark plugs every 12,000 miles or once a year, whichever comes first. This will help maintain proper combustion and fuel efficiency.

3. Air Filter Replacement: Replace the air filter every 12,000 miles or once a year, whichever comes first. A clean air filter ensures proper airflow to the engine, improving performance and fuel efficiency.

4. Cooling System Maintenance: Regularly check the coolant level and inspect hoses and belts for any signs of wear or leaks. Flush and refill the cooling system every two years or as recommended by the manufacturer.

5. Ignition Timing Adjustment: Check and adjust the ignition timing every 12,000 miles or once a year, whichever comes first. Proper ignition timing ensures optimal engine performance and fuel efficiency.

6. Regular Inspections: It is recommended to have a professional mechanic inspect the engine and its components regularly for any signs of wear, leaks, or other issues. This will help catch any potential problems early on and prevent further damage.

By following these recommended service intervals and using the correct engine oil specifications, you can ensure that your 1973 Buick 350 engine remains in excellent condition and delivers reliable performance for years to come.