As the detailed and manufacturing drawings were completed in Washington and Detroit they were taken to various factories where the parts for the first engine were built.
The General Aluminum & Brass Manufacturing Co., of Detroit, made the bronze-back, babbitt-lined bearings.
The Cadillac Motor Car Co., of Detroit, made the connecting rods, the connecting-rod upper-end bushings, the connecting-rod bolts, and the rocker-arm assemblies.
The L. O. Gordon Manufacturing Co., of Muskegon, Mich., made the cam shafts.
The Park Drop Forge Co., of Cleveland, made the crank-shaft forgings. These forgings, completely heat treated, were turned out in three days, because Mr. Hall gave the Cleveland concern permission to use the Hall-Scott dies.
The Packard Motor Car Co. machined the crank shafts and all parts not furnished or finished elsewhere.
The Hall-Scott Motor Car Co., of Berkeley, Calif., made all the bevel gears.
The Hess-Bright Manufacturing Co., of Philadelphia, made the ball bearings.
The Burd High-Compression Ring Co., of Rockford, Ill., made the piston rings.
The Aluminum Castings Co., of Cleveland, made the die-cast alloy pistons and machined them up to grinding.