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DTS Engine Dyno Service
SF-600 Flow Bench Testing
Dyno Tuning
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Engine Blueprinting
Stroker Kit Assemblies
Cylinder Head Blueprinting
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Notice! Superior Automotive has MOVED to a New Location
761 Monroe Way Placentia, CA 92870

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761 Monroe Way
Placentia, CA 92870


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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. We have recently developed a trule "Superior" Hemi Valve Spring Tool




761 Monroe Way
Placentia, CA 92870