What engine does a 1990 S-10 have?
The 1990 Chevrolet S-10 was offered with two engines: a 2.5-liter inline-four and a 2.8-liter V6.
In that model year, the base S-10 used the 2.5L inline-four (often referred to as the Iron Duke), while higher-trim or larger-cab configurations were equipped with the 2.8L V6 for added power. The larger 4.3-liter V6 did not appear in the 1990 lineup and was introduced later in the S-10’s first generation.
Engine options in 1990 S-10
Here are the factory engine choices you could find in a 1990 S-10 based on configuration and trim.
- 2.5-liter inline-four (Iron Duke)
- 2.8-liter V6
These two engines defined the 1990 S-10 lineup, with the four-cylinder prioritizing economy and the V6 offering stronger performance for heavier loads or 4x4 duty.
How to identify the engine in a 1990 S-10
To confirm which engine your specific truck has, check the engine stamping on the block, the emission label under the hood, or the vehicle’s VIN/dealer documentation. The two possibilities are the 2.5L inline-four or the 2.8L V6. If you have access to the vehicle’s build sheet or a parts catalog, those sources will also confirm the exact engine.
Engine identification tips
Look for the inline-four layout of the 2.5L or the compact V6 arrangement of the 2.8L on the engine itself. The VIN and exterior labels can help verify the exact configuration for your truck, which is important for maintenance and parts compatibility.
Summary
The 1990 Chevrolet S-10 offered two factory engines: a 2.5-liter inline-four and a 2.8-liter V6. The choice depended on trim and configuration, with the four-cylinder serving as the economy option and the V6 providing additional power for certain setups. The notable larger 4.3-liter V6 did not appear in the 1990 lineup, but it would appear in later years of the first-generation S-10. For anyone restoring or maintaining a 1990 S-10, identifying the correct engine is essential for parts compatibility and service.
Did the S10 have a V8?
It's really shares those thoughts it's a really rich. And lovely. Experience if you've ever driven like an older Silverado or the C/K. Series trucks from Chevy.
What engine does a 1990 S10 have?
Engines
| Years | Engine | Power |
|---|---|---|
| 1990 | 2.5 L LN8 Iron Duke I4, TBI | 94 hp (70 kW; 95 PS) at 4400 rpm |
| 1991–1993 | 2.5 L L38 Iron Duke I4, TBI | 105 hp (78 kW; 106 PS) at 4800 rpm |
| 1982 | 2.8 L LR2 60° V6, 2-barrel | 110 hp (82 kW; 112 PS) at 4800 rpm |
| 1983–1984 | 110 hp (82 kW; 112 PS) at 4800 rpm |
What is the life expectancy of a Chevy S10 2.2 engine?
A Chevy S10 with a 2.2L engine can last well over 200,000 miles, with some owners reporting 250,000 to over 300,000 miles with proper maintenance. Key factors for longevity include regular oil changes, timely replacement of the timing chain tensioner (especially for 2000-2004 models), and addressing common issues like intake manifold gasket leaks.
This video discusses the reliability of the 2.2L EcoTec engine and its common problems: 53s8020 AutomotiveYouTube · Jan 2, 2025
Factors influencing engine life
- Proper maintenance: Consistent oil changes with the correct viscosity are crucial for keeping the engine lubricated and cool.
- Timing chain tensioner: For models between 2000 and 2004, it's especially important to monitor and replace the timing chain tensioner to prevent issues caused by slack.
- Common issues: Be aware of and address common problems like oil leaks and intake manifold gasket wear, which can occur in older engines.
- Driving and usage: How the S10 is used and maintained will significantly impact its lifespan.
- High mileage examples: Many owners have shared stories of their 2.2L engines reaching over 300,000 miles, sometimes with major repairs like a new head gasket or clutch, showing the engine's potential when well-cared for.
How much is a 1990 S10 worth?
The value of a 1990 Chevy S10 varies significantly based on its condition, mileage, and specific model, with typical private party values ranging from around $827 to $6,526 for standard models, but potentially reaching much higher for well-maintained or highly original examples, as seen in recent auction sales. Factors like a pickup versus Blazer model, specific trim level, and transmission can also affect the final price.
General value estimates
- Standard S10 Pickup: Ranges from approximately $827 to $6,526, depending on condition and other factors.
- S10 Blazer: Values typically range from $820 to $4,753, depending on condition, mileage, and options.
Factors influencing value
- Condition: A well-maintained, original vehicle will be worth significantly more than a project or parts vehicle.
- Mileage: Lower mileage is a major factor in increasing the value of a 1990 S10.
- Trim Level: Higher trim levels, like the Tahoe or Durango, will command a higher price.
- Vehicle Type: The value will differ between a pickup and an S10 Blazer.
- Modifications: While some modifications can increase value, they can also decrease it depending on the quality and appeal of the modifications. Some highly desirable modifications can be found in auction sales, where values have gone up significantly.
- Market: Local market conditions and demand can affect the value of the vehicle.
How to get a more accurate valuation
- Use online appraisal tools: Websites like Edmunds and J.D. Power offer free appraisal tools where you can enter your vehicle's specific details for a more accurate estimate.
- Check recent sales: Look at recent sales on auction sites like Classic.com or for sale listings on sites like CarGurus to see what similar vehicles are selling for.
