What year and make is 3814678 in a Chevy engine?

You can't determine the year and make of a Chevy engine based on the number 3814678. That number likely represents a casting number, which identifies a specific part of the engine, but doesn't provide information about the model year or make.

To find the year and make, you'll need to:

* Identify the engine block: Look for the casting number on the block itself. It will be a series of numbers and letters.

* Use a database: There are online databases and resources that can help you decipher casting numbers and identify the corresponding engine.

* Check for other markings: Look for other markings on the engine, like a date code or model designation.

Remember, without the proper context and resources, it's impossible to determine the year and make of a Chevy engine based on just a random number.