Peninsula Performance LLC provides a comprehensive suite of professional automotive engineering and performance services tailored to meet the exacting standards of our clients. Our core expertise encompasses precision engine machining, meticulous assembly, and complete rebuilding to original manufacturer specifications. Whether you are looking for a mild-to-wild custom build or specialized power adder modifications—including turbocharger, supercharger, and NOS kit installations—our team delivers high-caliber craftsmanship and technical excellence.

To complement our mechanical builds, we offer advanced electronic integration and calibration. This includes performance ECM tuning for maximum output, ECM tuning optimized for fuel economy, and specialized transmission tuning paired with performance transmission builds. From fundamental cam and engine swaps to bespoke custom fabrication, we are dedicated to enhancing vehicle dynamics and delivering superior performance through professional, data-driven modifications.