Don’s Carburetor Inc. was founded in 1983 by Don Johnston, a young enthusiast whose passion for high-performance Pontiac engines runs deep. Growing up, Don was surrounded by automotive excellence—his uncle was a prominent figure in drag racing, working with legendary teams like the Flintstones Flyer, while his father maintained a collection of iconic Pontiac muscle cars. After his father restored a 1968 Firebird and passed it to him, Don’s love for Pontiac performance became his driving force.
What started as a carburetor rebuilding operation quickly evolved. While racing his own 1981 Grand Prix at local tracks like Quaker City, Dragway 42, and Youngstown Drag City—consistently posting mid-10-second passes—Don caught the attention of other racers. Customers began requesting his expertise to build their engines, and DCI Motorsports Inc. was born.
Frustrated by the limitations of existing Pontiac cylinder heads, Don set out to master the science of airflow and fuel atomization. The result was the DCI TIGER HEAD—widely recognized as the finest as-cast traditional Pontiac cylinder head ever produced. Flowing over 400 CFM right out of the box, it’s capable of producing over 1,100 horsepower with no porting required. Don’s commitment to innovation continues to drive the company forward.
Today, DCI Motorsports is your complete performance destination. Whether you need a simple tune-up, a full underhood restoration on a classic muscle car, or a complete engine build for a 1,000+ HP race machine, we have the expertise to deliver.