1968 Pontiac 350 Engine Specs
Engine Configuration
The 1968 Pontiac 350 engine was a V8 engine that belonged to the Pontiac V8 engine family. It featured a displacement of 350 cubic inches or 5.7 liters. This engine was part of the second generation of Pontiac V8 engines, which were known for their power and performance.
Engine Oil Specs
To ensure optimal performance and longevity of the 1968 Pontiac 350 engine, it is important to use the correct engine oil. The recommended engine oil for this engine is SAE 10W-30. It is important to choose a high-quality oil that meets the specifications set by the American Petroleum Institute (API). Look for oils that meet or exceed the API service classification of SF or SG.
Service Intervals
Regular maintenance is crucial to keep the 1968 Pontiac 350 engine running smoothly. Here are the recommended service intervals for various components:
1. Oil Change: It is recommended to change the engine oil and oil filter every 3,000 to 5,000 miles or every three to six months, whichever comes first. Regular oil changes help remove contaminants and ensure proper lubrication of engine components.
2. Spark Plugs: The spark plugs should be inspected and replaced every 10,000 to 15,000 miles or as recommended by the manufacturer. Worn or fouled spark plugs can lead to poor engine performance and reduced fuel efficiency.
3. Air Filter: The air filter should be checked every 12,000 to 15,000 miles and replaced if necessary. A clogged air filter restricts airflow to the engine, reducing power and fuel efficiency.
4. Fuel Filter: The fuel filter should be replaced every 20,000 to 30,000 miles or as recommended by the manufacturer. A clogged fuel filter can restrict fuel flow and cause engine performance issues.
5. Cooling System: The cooling system should be inspected and the coolant flushed every 24,000 to 36,000 miles or as recommended by the manufacturer. Regular maintenance of the cooling system helps prevent overheating and engine damage.
6. Timing Belt/Chain: The timing belt or chain should be inspected and replaced as recommended by the manufacturer. Typically, timing belts need to be replaced every 60,000 to 100,000 miles, while timing chains are designed to last the lifetime of the engine.
7. Battery: The battery should be inspected and tested regularly. Clean the battery terminals and cables to ensure a good connection. Replace the battery if it is more than three to five years old or if it fails the load test.
8. Transmission Fluid: The transmission fluid should be checked and replaced as recommended by the manufacturer. Typically, automatic transmission fluid needs to be changed every 30,000 to 60,000 miles, while manual transmission fluid may last longer.
Detailed Engine Specifications
| Specification | Value |
|---|---|
| Engine Type | V8 |
| Displacement | 350 cubic inches (5.7 liters) |
| Compression Ratio | 10.5:1 |
| Horsepower | 265 hp |
| Torque | 370 lb-ft |
| Fuel System | 4-barrel carburetor |
| Ignition System | Points-type ignition |
| Valvetrain | Overhead valves (OHV) |
| Transmission | 3-speed manual or 2-speed automatic |
In conclusion, the 1968 Pontiac 350 engine was a powerful V8 engine that offered impressive performance. By following the recommended engine oil specs and service intervals, you can ensure that this engine continues to deliver its full potential. Regular maintenance and attention to key components will help keep your Pontiac running smoothly for years to come.
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