Aston Martin DB Mark III was launched at the Geneva Show in March 1957 and was available only for export until it was shown at the London Motor Show in October that same year. Aston Martin DB Mark III was the final development of the cars based on Claude Hill’s chassis and the Lagonda six-cylinder twin overhead camshaft engine. It remained in production for circa nine months after the Aston Martin DB4 was introduced. Some 310 cars were exported to the USA.
Tadek Marek had finely re-designed the 3-litre engine. The standard DBA version of this engine had a stiffer crankshaft, a new block, oil pump and timing chain, new exhaust and induction manifolds, the ports were based on the Aston Martin DB3S engine, larger valves, high lift camshafts (after the first 150). With the same capacity (2,922cc) twin SU carburettors and compression ratio (8:16:1) as the VB6J engine, the improved breathing provided an output claimed to be 162 bhp at 5,500rpm.
