What engine does a 1981 C10 have?
In 1981, the Chevrolet C10 offered multiple engine choices rather than a single standard powerplant. The main options were a 4.1-liter inline-six, a 5.0-liter small-block V8, and a 5.7-liter small-block V8.
The 1981 C10 is part of the third-generation C/K trucks (produced from 1973 to 1982). Engine availability varied by trim, cab/bed configuration, and market. Base and mid-trim models often used the inline-six, while higher-trim or heavier-duty configurations could be equipped with one of the V8s for more power and payload capabilities.
Engine options for the 1981 C10
Chevrolet offered a range of engines across the inline-six and small-block V8 families for the 1981 C10. The following options were commonly available on many trucks of that year.
- 4.1 L inline-six (250 cu in) – The baseline engine, known for reliability and steady torque suitable for everyday work duties.
- 5.0 L small-block V8 (305 cu in) – A popular mid-range option providing more power than the inline-six without being as large as the bigger V8s.
- 5.7 L small-block V8 (350 cu in) – A larger V8 offering greater acceleration and towing capability for heavier use.
In practice, buyers could choose among these engines based on trim level, intended use, and regulatory requirements. The inline-six typically appeared on base configurations, while the 305 and 350 V8 options appeared on trims aimed at higher payload or performance.
Notes on availability and identification
To determine the exact engine in a specific 1981 C10, check the engine stamping under the hood or refer to the vehicle's build sheet/VIN options. Engine upkeep and restoration often depend on matching the correct carburetion setup and accompanying emissions controls for that model year.
Summary
The 1981 Chevrolet C10 offered three main engines: the 4.1 L inline-six (250 cu in), the 5.0 L V8 (305 cu in), and the 5.7 L V8 (350 cu in). Which engine you got depended on the truck’s trim and configuration, with the inline-six typically in base models and the V8s in higher-spec or higher-tow/payload variants. Understanding the specific build helps identify which powerplant a given C10 carries.
