For custom-built racing engines or getting stock engine modifications for performance, choose American Speed Enterprises. Our proven expertise can be seen and heard in engines around the world! Our shop welcomes custom builds, performance enhancements, engine machining, rebuilding and engine repair. With decades of engine experience and a complete inventory of performance parts, we’re your one-stop-shop for an engine that’s more powerful and efficient. Let us provide you with a free consultation today, to ensure we’re delivering the top-level service we’re known for. For more information about our capabilities in Moline, Rock Island County, and Silvis, IL, or Davenport and Bettendorf, IA, please fill out the form below. We specialize in Chevy engines.