Lethal Performance & Dyno Inc. is the leading LSX performance shop in Tennessee. We strive to offer an honest and reputable staff with the best customer service and knowledge in the LSX performance industry. We are working on being a leading source for GM parts and packages. We currently offer everything from complete engine builds, small bolt on installations, turbo and supercharger applications, heads and camshaft upgrades, and ECU calibrations using HPtuners. We are excited to continue growing and providing all of your racing needs.