1964 Bentley S3 Saloon Chassis no. B492CN Engine no. BCN246 Launched in 1962, the Bentley S3 and its Rolls-Royce equivalent, the Silver Cloud III, employed the 6. 2-litre V8 engine introduced on the Silver Cloud II/Bentley S2, though with larger carburettors, a new distributor and raised compression ratio. Facing increasing competition from faster rivals and with development of its ageing six-cylinder engine nearing its end, Rolls-Royce had turned to V8 power as the 1960s approached