
The body was light, yet rigid. The newly designed Tadek Marek DOHC 3.7-liter engine produced an impressive 240 bhp, which propelled the Aston from 0 to 60 in under 10 seconds. Most notable, the Series IV DB4s featured a wider ratio gearbox, twin-plate Borg & Beck clutch and a much improved suspension system, all of which further elevated the DB4 well beyond most of its touring contemporaries.