S Jennings Racing LLC

S Jennings Racing LLC is a specialized manufacturer of high-performance racing engines and precision engine components based in Tooele, Utah. Founded in 1974 and managed by brothers Cliff and Kevin Jennings, the company leverages over 40 years of expertise to serve the automotive, commercial, military, and aerospace sectors. As a contract manufacturer with in-house factory capabilities, they provide both CNC and manual machining, assembly, and advanced research and development services. The company specializes in a wide range of components including camshafts, carburetors, valves, water pumps, manifolds, gaskets, and custom-machined parts for brands such as Ford, Jaguar, and Lotus. S Jennings Racing is particularly recognized for its ability to handle antique engine restorations and the custom manufacturing of unique or obsolete parts. Their operations emphasize quality assurance through the use of domestic materials with full traceability and rigorous inspection processes, ensuring all products—from cylinder blocks to spring retainers—meet high-performance standards. With a dedicated team of 5 to 10 employees, they offer comprehensive engine rebuilds for both modern and vintage racing eras.