Cadillac V16 engine

The Cadillac V16 engine is a term that applies to two different Cadillac-designed V-16 automobile engines, an overhead valve 45-degree 452 cu in (7.4 L) model produced between 1930 and 1937, and a 135-degree side valve 431 cu in (7.1 L) between 1938 and 1940. Both were used in its most luxurious model line, the Cadillac V-16.

Cadillac produced two of only four production gasoline-fueled V16 engines in history. The company has twice since attempted to build a new V16 engine, once in the 1980s and again in 2003 (the Cadillac Sixteen), neither making it into production.