Superior Automotive is located in Southern California having relocated in the 1990's from New York where Joe Jill had established Speedwin Engineering in 1960. Superior Automotive quickly gained a well deserved reputation as one of the finest state-of-the-art high performance automotive services, diagnostic and repair facilities in the U.S., just as Speedwin had from the 1960s through the 1990s. Superior Automotive specializes in Dyno Tuning, Engine Blueprinting, Cylinder Head Blueprinting, LS1 engines, LS2 engines, LS7 engines, Engine Dyno, Flow bench, Dynojet chassis Dyno, Carburetor rebuilding, Carburetor rejetting and many other highly specialized automotive services.
Here at RNR Performance it is our goal to provide you with the best quality machine work and engine builds. RNR is a family owned and operated business with a focus on customer service and quality work. With a combined focal point of engine building, hot rod building, and race car building and setup we are able to offer our customers a wealth of knowledge in the appropriate engine combinations. Please feel free to call or message us with any questions you might have. We are dedicated to our customers and would like to add you to that list.