Founded in 2008, Baltimore-based Sikky Manufacturing makes American-made components and complete systems for LS engine swaps, including its own motor mounts and transmission adapters. The company also builds turnkey vehicle conversions and provides private-label manufacturing, using CNC machining and other fabrication capabilities to develop, test, and produce parts for automotive performance businesses.
G Force Performance ProductsFrom its Wadsworth, Ohio operation, G Force Performance Products makes performance hardware for engine swaps and vehicle conversions, with transmission crossmembers and its patent-pending lightweight steel Swap Block mock-up system at the center of the business. Founded by automotive enthusiasts, the company also produces fit-specific mounts, adapters and chassis parts, and says about 90% of its products are made in the USA. Its parts are designed around the practical headaches of a build, helping racers and builders check fitment and complete installations without cutting or welding where a bolt-in solution is available.REMSENBURG, NY
ATI Performance Products, IncFamily-owned and operated since 1961, ATI Performance Products makes high-performance racing components, with automatic transmissions and torque converters at the heart of its Baltimore-area operation. What began as Jim Beattie’s modest transmission rebuilding shop now includes in-house manufacturing, more than 30 CNC machines, and products tested on the drag strip by the Beattie family. ATI also holds more than a dozen U.S. government patents and builds specialized converter-rebuilding equipment alongside its racing parts.BALTIMORE, MD
EFI ConnectionSince 2003, EFI Connection has built automotive wiring harnesses, connectors and engine-electronics hardware for enthusiasts, with a particular focus on adapting classic GM engines to modern LS-series controls. The company pioneered its crank-and-cam signal solution in 2008, and its EFI 24x and EFI 58x conversion kits now cover more than 50 small-block Chevy, LT1 and big-block configurations. EFI Connection has also been a CNC manufacturer since 2012, producing its offerings in the USA and supporting do-it-yourself builders with the parts and tools needed to complete their wiring projects.ERIE, PA
Shiftworks, IncBorn from its founder’s 1966 LS-powered Chevelle transmission swap, Shiftworks, Inc. makes conversion kits, shifters and related components that let classic-car owners upgrade GM automatic transmissions while keeping the factory interior appearance. In business since 1991, the Ontario, New York company also rebuilds original GM floor shifters and adapts them for modern transmissions, including applications reaching eight-speed automatics.ONTARIO, NY