Chevrolet enthusiast sites, such as NastyZ28.com, are the best source for finding information about Chevrolet engine block numbers. These websites contain information that allow Chevrolet owners to decode the information printed on their vehicles' engine blocks to find out where they were built, the original models and other details.
Information is more readily available for classic Chevrolet vehicles than for newer models because enthusiasts spend more time restoring the classics. For newer models, vehicle owners may need to visit an authorized Chevrolet dealership to find the information necessary to decode engine block numbers. Mechanics working at dealerships have specialized knowledge in this area.