Contributions of Cadillac to the automotive industry

From its earliest years Cadillac aimed for precision engineering and stylish luxury finish, causing its cars to be ranked amongst the finest in the US. Utilization of interchangeable parts was an important innovation in 1908. Cadillac was the first volume manufacturer of a fully enclosed cab in 1910, and in 1912 was first to incorporate an electrical system enabling starting, ignition, and lighting.

In 1915 it introduced a 90-degree flathead V8 engine with 70 horsepower (52 kW) at 2400 rpm and 180 foot-pounds force (240 N·m) of torque, allowing its cars to attain 65 miles per hour. This was faster than most roads could accommodate at this time. Cadillac pioneered the dual-plane V8 crankshaft in 1918. In 1928 Cadillac introduced the first clashless Synchro-Mesh manual transmission, utilizing constant mesh gears. In 1930 Cadillac implemented the first V-16 engine, with a 45-degree overhead valve, 452 cubic inches, and 165 horsepower (123 kW), one of the most powerful and quietest engines in the United States. The development and introduction of the V8, V16 and V-12 helped to make Cadillac the "Standard of the World."

A later model of the V8 engine, known as the overhead valve, set the standard for the entire American automotive industry in 1949.