What engine is in a 1977 Chevy C10?
There isn’t a single engine that defined every 1977 Chevy C10. Depending on the build, a 1977 Chevrolet C10 could be equipped with several engines, with the most common being the 350 cu in V8. Optional powertrains included a 305 cu in V8, a 400 cu in V8, and a 250 cu in inline-six.
Engine options for the 1977 C10
The 1977 C10 lineup offered a range of powertrains across trims and configurations. The following options were commonly available:
- 250 cubic inch inline-six (4.1 L)
- 305 cubic inch V8 (5.0 L)
- 350 cubic inch V8 (5.7 L)
- 400 cubic inch V8 (6.6 L)
Engine availability could vary by model year, cab configuration, and regional emissions requirements. To confirm the exact engine for a specific truck, check the VIN, build sheet, or the engine code stamped on the block.
Verifying the engine in your C10
If you own a 1977 C10 or are restoring one, use these steps to identify the installed powertrain:
Common ways to identify the engine
- Engine block stamping showing displacement and engine family.
- RPO/option codes on the glove box label or door jamb.
- VIN-based build sheet or window sticker that lists the engine code.
With these indicators, you can accurately determine whether a truck uses a 250 inline-six, a 305, a 350, or a 400 engine.
Summary
In short, the 1977 Chevy C10 offered multiple engine choices. The most common was the 350 cu in V8, with optional 305 cu in V8, 400 cu in V8, and a 250 cu in inline-six. The precise engine on any individual truck depends on the original order and regional emissions rules, so verification via VIN/build sheet is essential for restoration or resale. This article provides a snapshot of the typical options and how to verify them.
Was the Chevy 305 a good motor?
The 305 is a reliable motor but it makes no real power. The only advantage is that you already have a motor instead of having to buy one. All things considered you're better off going the 350 route.
What engine does a 1977 C10 have?
350 cubic inch V8
Under the hood is a 350 cubic inch V8 mated to a Turbo-Hydramatic 350 automatic transmission.
What year is the best Chevy 350 engine?
The best Chevy 350 engine is often considered to be the 1996-2000 Vortec 5.7L due to its significant improvements in performance and efficiency. This version features Vortec cylinder heads for better airflow and the more durable hydraulic roller camshaft. While earlier models were simpler, later ones like the Vortec offered a stronger block design (880 casting), which is ideal for high-performance builds.
This video explains the advantages of the Vortec 5.7L engine: 58sMyvintageiron7512YouTube · Mar 17, 2023
1996-2000 Vortec 5.7L
- Vortec cylinder heads: Significantly improved airflow and combustion efficiency, leading to better performance and fuel economy.
- Hydraulic roller camshaft: This provides greater durability and reduced wear on the valvetrain compared to older flat-tappet cams.
- Stronger block: Blocks with the "880" casting number were used during this time and are built for roller cams, making them a great foundation for building a high-performance engine.
Other notable years
- Early 1990s (with roller cam): These engines are also desirable because they came with a roller valvetrain, but some may lack a provision for a mechanical fuel pump.
- 1970 LT-1: For those seeking raw, early-era power, the 1970 LT-1 version is a legendary, high-performance option with solid lifters and high compression.
- 1986 and newer (one-piece rear main seal): Engines from 1986 and newer are equipped with a one-piece rear main seal, which is different from the two-piece seal found on older engines. This distinction is important when selecting a compatible flywheel or flexplate.
How much is a 1977 Chevy C10 worth today?
A 1977 Chevy C10's value varies significantly based on its condition, with a 1/2 Ton in good condition averaging around $15,038. Prices can range from a low of about $5,460 for a project truck to as high as $77,000 for a rare, exceptionally well-maintained example, and a 1977 C10 Suburban Custom Deluxe in good condition is valued around $17,675.
| Vehicle Type | Estimated Value (Good Condition) |
|---|---|
| 1/2 Ton | ~$15,038 |
| Suburban Custom Deluxe | ~$17,675 |
| Big 10 | ~$14,825 |
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- Condition is key: Prices are heavily influenced by the vehicle's condition, mileage, and any modifications.
- Average examples: A "good condition" 1977 C10 1/2 Ton is valued around $15,038.
- Lower end: The lowest recent auction sale was $5,460, typical for a project truck.
- Higher end: The highest recent auction sale was $77,000, reserved for rare or exceptionally well-restored vehicles.
