The pilot stated that as the aircraft descended, the engine was operating at 2000 rpm, and the selected manifold pressure was 15 in Hg, and at 8,000 feet he noticed that the engine had ceased operating. Prior to noticing that the engine had ceased operating he said everything had been normal, but as he maneuvered to land he felt he was too far down the runway to land safely, so he elected to perform a go-around.