1989 GMC Sierra 350 Engine Specs
The 1989 GMC Sierra 350 is a robust truck known for its reliability and performance. It was available with several engine options, catering to various needs, from heavy-duty towing to everyday driving. Below are the detailed engine specifications for the 1989 GMC Sierra 350.
| Engine Type | Displacement | Cylinders | Horsepower | Torque | Fuel System |
|---|---|---|---|---|---|
| 5.7L V8 | 350 cubic inches | 8 | 210 hp @ 4,600 rpm | 300 lb-ft @ 3,200 rpm | Carbureted |
| 7.4L V8 | 454 cubic inches | 8 | 230 hp @ 4,000 rpm | 385 lb-ft @ 3,200 rpm | Carbureted |
| 6.2L Diesel V8 | 379 cubic inches | 8 | 130 hp @ 3,600 rpm | 240 lb-ft @ 2,000 rpm | Indirect Injection |
Engine Configuration
The engine configurations of the 1989 GMC Sierra 350 are designed to provide a balance between power and efficiency. Below are the key configurations for each engine type:
5.7L V8 Configuration
-Type: Gasoline
-Bore x Stroke: 4.00 in x 3.48 in
-Compression Ratio: 9.0:1
-Fuel Delivery: Carbureted
-Ignition System: Conventional distributor
7.4L V8 Configuration
-Type: Gasoline
-Bore x Stroke: 4.25 in x 4.00 in
-Compression Ratio: 8.5:1
-Fuel Delivery: Carbureted
-Ignition System: Conventional distributor
6.2L Diesel V8 Configuration
-Type: Diesel
-Bore x Stroke: 4.00 in x 3.60 in
-Compression Ratio: 8.2:1
-Fuel Delivery: Indirect Injection
-Ignition System: Glow plug system
Engine Oil Specs & Service Intervals
Proper maintenance of the engine oil is crucial for the longevity and performance of the 1989 GMC Sierra 350. Below are the recommended oil specifications and service intervals.
Engine Oil Specifications
-Oil Type: SAE 10W-30 or 10W-40 for gasoline engines
-Oil Type: SAE 15W-40 for diesel engines
-Oil Capacity:
– 5.7L V8: 5 quarts (with filter)
– 7.4L V8: 7 quarts (with filter)
– 6.2L Diesel V8: 6 quarts (with filter)
Service Intervals
Regular oil changes are essential for maintaining engine health. Below are the recommended service intervals:
- Change oil and filter every 3,000 miles or 3 months, whichever comes first.
- Inspect oil level monthly and top off as needed.
- Use high-quality oil filters to ensure optimal performance.
Conclusion
The 1989 GMC Sierra 350 is a versatile truck that offers various engine options to meet different needs. Understanding the engine specifications, configurations, and maintenance requirements is essential for owners to keep their vehicles running smoothly. Regular oil changes and using the correct oil type will significantly contribute to the engine’s performance and longevity.
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