Dodge 340 Engine Specifications
The Dodge 340 engine is a high-performance V8 engine that was produced by Chrysler from 1968 to 1973. It is renowned for its power and reliability, making it a popular choice among muscle car enthusiasts. Below are the detailed specifications of the Dodge 340 engine.
| Specification | Details |
|---|---|
| Engine Type | V8 |
| Displacement | 340 cubic inches (5.6 liters) |
| Bore x Stroke | 4.04 in x 3.31 in (102 mm x 84 mm) |
| Compression Ratio | 10.5:1 |
| Horsepower | 275 hp @ 5,000 RPM |
| Torque | 410 lb-ft @ 3,200 RPM |
| Fuel System | 4-barrel carburetor |
| Ignition System | Electronic ignition |
| Engine Weight | Approximately 600 lbs (272 kg) |
| Production Years | 1968-1973 |
Engine Configuration
The Dodge 340 engine features a classic V8 configuration that is designed for performance and efficiency. Here are some key aspects of its configuration:
Block and Cylinder Head
– The engine block is made from cast iron, providing durability and strength.
– The cylinder heads are also cast iron, featuring large intake and exhaust ports to facilitate airflow.
Valvetrain
– The Dodge 340 utilizes a pushrod valvetrain with hydraulic lifters.
– The engine has a total of 16 valves, with two valves per cylinder.
Intake and Exhaust
– The engine is equipped with a high-performance intake manifold designed to optimize air-fuel mixture.
– Exhaust headers are often upgraded to improve exhaust flow and enhance performance.
Performance Features
– The 340 engine is known for its high-revving capabilities, making it suitable for both street and track applications.
– It features a forged steel crankshaft and connecting rods for added strength.
Engine Oil Specifications & Service Intervals
Proper maintenance of the Dodge 340 engine includes regular oil changes and the use of appropriate oil types. Below are the recommended oil specifications and service intervals.
Engine Oil Specifications
– Oil Type : SAE 10W-30 or 10W-40 (for general use)
– Oil Capacity : Approximately 5 quarts (with filter)
– Oil Filter : Use a high-quality oil filter compatible with the Dodge 340 engine.
Service Intervals
– Oil Change Frequency : Every 3,000 to 5,000 miles, or every 3 to 6 months, depending on driving conditions.
– Filter Replacement : Replace the oil filter every time the oil is changed.
– Inspection : Regularly check oil levels and condition, especially before long trips or during heavy use.
Maintenance Tips
– Always use high-quality engine oil to ensure optimal performance and longevity.
– Monitor oil levels regularly and top off as needed.
– Consider using synthetic oil for better performance, especially in extreme conditions.
Conclusion
The Dodge 340 engine remains a significant part of automotive history, particularly in the muscle car era. Its robust specifications, combined with a well-thought-out configuration, make it a favorite among enthusiasts. Regular maintenance, including proper oil specifications and adherence to service intervals, is crucial for keeping this powerful engine running smoothly. Whether you are restoring a classic or maintaining a vintage muscle car, understanding the Dodge 340 engine’s specs and requirements is essential for optimal performance and longevity.
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