* Check the Vehicle Identification Number (VIN): The VIN, usually found on the dashboard (visible through the windshield), contains a code that indicates the engine. You can use the VIN decoder services available online (many are free) to find the engine type. This is the most reliable method.
* Look at the Engine Block: The engine itself will have casting numbers stamped on it. These numbers can be cross-referenced with Chevrolet engine identification charts found online or in repair manuals. The location of these numbers varies by engine, but they are often on the side of the block, near the front. Take photos to aid in identification, as the numbers can be hard to read.
* Check the Owner's Manual (if you have it): The owner's manual should specify the engine type.
* Examine the Air Cleaner: Sometimes, the engine type or displacement (e.g., 305, 350) is cast into the air cleaner housing or stamped on a tag attached to it. This isn't always the case, but it's worth a quick look.
* Look under the hood for markings on components: Some engine-related parts, like the valve covers, may have markings indicating the engine size.
Important Note: Be aware that the engine may have been swapped at some point in the car's life. The methods above will only tell you what's currently *in* the car, not necessarily what was originally installed at the factory. The VIN is the most reliable way to determine the original engine.
