Overview of the GMC 248 Engine
The GMC 248 engine is a well-regarded powerplant that has been utilized in various GMC and Chevrolet vehicles. Known for its reliability and performance, this engine has garnered attention from both enthusiasts and everyday drivers alike. This article delves into the specifications, engine configuration, oil specifications, and service intervals for the GMC 248 engine.
Engine Specifications
The GMC 248 engine is characterized by its robust design and impressive performance metrics. Below is a detailed specification chart that outlines the key features of this engine.
| Specification | Details |
|---|---|
| Engine Type | V8 |
| Displacement | 248 cubic inches (4.1 liters) |
| Bore x Stroke | 3.75 inches x 3.25 inches |
| Compression Ratio | 8.5:1 |
| Horsepower | 150 hp @ 4,000 RPM |
| Torque | 240 lb-ft @ 2,400 RPM |
| Fuel System | Carbureted |
| Ignition System | Conventional |
| Cooling System | Water-cooled |
Engine Configuration
The GMC 248 engine features a V8 configuration, which is known for its smooth operation and power delivery. Below are some key aspects of the engine’s configuration:
Key Features
- V8 layout provides a balanced power-to-weight ratio.
- Cast iron block and aluminum cylinder heads for durability.
- Overhead valve (OHV) design for efficient airflow.
- Single camshaft located in the block.
Performance Characteristics
- Responsive throttle with good low-end torque.
- Suitable for a variety of applications, including trucks and SUVs.
- Capable of towing and hauling heavy loads.
Engine Oil Specifications
Proper maintenance of the GMC 248 engine includes using the correct engine oil. The following specifications should be adhered to for optimal performance and longevity.
Recommended Engine Oil
- Viscosity: 10W-30 or 10W-40
- API Rating: SN or higher
- Oil Type: Conventional or Synthetic
Oil Capacity
- Oil Capacity: Approximately 5 quarts (with filter)
Service Intervals
Regular maintenance is crucial for the GMC 248 engine to ensure it operates efficiently and reliably. Below are the recommended service intervals for oil changes and other maintenance tasks.
Oil Change Intervals
- Every 3,000 to 5,000 miles for conventional oil.
- Every 5,000 to 7,500 miles for synthetic oil.
Other Maintenance Tasks
- Replace oil filter with every oil change.
- Inspect and replace air filter every 15,000 miles.
- Check spark plugs and wires every 30,000 miles.
- Inspect belts and hoses every 30,000 miles.
- Flush and replace coolant every 50,000 miles.
Conclusion
The GMC 248 engine is a solid choice for those seeking a reliable and powerful V8 engine. With its well-designed specifications and maintenance requirements, it offers a balance of performance and durability. Adhering to the recommended oil specifications and service intervals will ensure that this engine continues to perform at its best for years to come. Whether used in a truck, SUV, or other applications, the GMC 248 engine remains a noteworthy option in the automotive landscape.
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