What year is 401027 Chevy motor?

There's no single year associated with a "401027 Chevy motor." That number is likely a casting number, which identifies a specific engine block, but not the year it was manufactured. Casting numbers vary significantly even within the same engine family across different production years.

To determine the year, you need more information, such as:

* The full casting number: The "401027" is likely part of a longer number. The complete number is crucial for identification.

* The engine family: Knowing if it's a small-block (e.g., 350, 305), big-block (e.g., 454), or LS series engine helps narrow down the possibilities.

* Any other markings on the engine: Look for other numbers or codes stamped on the block.

With the complete and accurate information, you can use online resources or consult Chevrolet engine identification guides to find the manufacturing year.