The Rolls-Royce Phantom III was produced from 1936 through 1939 with a total of 727 examples built (a final chassis was built in 1940 and due to the time necessary to complete the vehicles, cars were still receiving coachwork and delivered in 1940 and 1941). It replaced the Phantom II and was the only V-12-powered Rolls-Royce until the introduction of the Silver Seraph in 1998. The Phantom III was the final car that Henry Royce worked on, as he passed away at the age of 70, a year into the vehicle's development.
The Phantom III rested on a 142-inch wheelbase and had an independent front suspension by a coil spring-based system with a semi-elliptical spring unit in the rear. Wire wheels were standard although many owners selected Ace wheel discs which altered the vehicle's appearance and required less time to clean. Stopping power was provided by 4-wheel servo-assisted brakes.
The aluminum-alloy, pushrod, overhead-valve V-12 engine displaced 7.32 liters and had a stroke of 4.5 inches and a bore that measured 3.25 inches. The overhead valves were operated by a single camshaft in the valley between the cylinder banks. There was a twin ignition system with two distributors, 24 spark plugs, and two coils.
The engine was mated to a four-speed manual transmission with synchromesh on gears 2, 3, and 4. In 1938, an overdrive gearbox was added.
Rolls-Royce produced the chassis and mechanical components, with bodies being created by coachbuilders.
by Dan Vaughan