What motor is in a 1989 S-10?
In 1989 the Chevrolet S-10 offered three engines depending on trim and options: a 2.5-liter inline-four, a 2.8-liter V6, or a 4.3-liter V6. The exact motor can be identified by checking the vehicle’s VIN, window sticker, or service documentation.
Engine options for the 1989 S-10
The 1989 S-10 lineup included a small, economical four-cylinder and two V6 options, providing a range of performance suitable for light duty, work use, or towing. Each engine had its own characteristics, and availability varied by model, cab configuration, and drivetrain.
2.5-liter inline-four
Overview: The base 2.5L I4 was the entry engine, valued for fuel efficiency and lower operating costs. Typical output was in the roughly 105–110 horsepower range, with about 135–145 lb-ft of torque depending on emissions equipment and configuration. This engine was common on base and work-truck models.
2.8-liter V6
Overview: The 2.8L V6 offered smoother power and stronger midrange performance. It commonly produced about 130–140 horsepower and 170–180 lb-ft of torque, making it a popular upgrade for buyers wanting more pulling power without stepping up to the largest engine.
4.3-liter V6
Overview: The 4.3L V6 was the most capable engine in the 1989 S-10 lineup, delivering around 165–180 horsepower and 250–275 lb-ft of torque. It provided the best overall towing and hauling capability among the gasoline options and was frequently paired with either automatic or manual transmissions and 2WD or 4WD configurations.
Notes: Availability varied by trim, cab size, and drivetrain. Some configurations may have used different emission-control equipment that could affect horsepower figures slightly.
How to confirm your engine
To confirm the exact engine in a specific 1989 S-10, inspect the vehicle’s VIN and the under-hood emissions label or the door jamb sticker. The engine family code and build data are listed on the window sticker or in the original documentation, allowing you to match the chassis to the correct motor.
Summary
The 1989 Chevrolet S-10 offered a spectrum of powertrains: a base 2.5-liter inline-four for economy, a mid-range 2.8-liter V6 for improved performance, and a robust 4.3-liter V6 for enhanced towing and capability. Identifying the exact engine involves checking the VIN, window sticker, and service records from the era.
