Short block engines are sold online at racing parts websites, such as Summit Racing Equipment and Mabbco Motors, and at major retail websites such as Amazon.com. Short block engines are available in four, six and eight cylinders and typically come with a limited warranty.
Short block engines are commonly easier to rebuild and are typically purchased by mechanics. They are popular for customized racing engines and are often used with performance enhancing modifications. Short block engines can sometimes be found at auction websites such as eBay. Professional websites that sell short block engines typically sell pistons, crankshafts and connecting rods to use with the engine.