The planned successor to the DB2 and its derivatives was Project 114, begun in 1952, for which engineer Harold Beach had designed the front suspension and perimeter frame. After original styling failed to pass muster, Beach joined designers at Touring of Milan. Touring's 'Superleggera' ('superlight') body construction system, with alloy panels fixed over a tubular frame, demanded a platform chassis, which Beach designed in just six weeks.
This system allowed extraordinary weight savings combined with a degree of stiffness otherwise unobtainable, which in conjunction with a new 3670cc six-cylinder engine ensured DB4 was one of the fastest cars on the road.
Interviewed in 2008 at the age of 95, chassis engineer Harold Beach had the clearest possible recollection of David Brown's response following their Sunday morning drive of DB4 prototype almost 50 years earlier.
The DB4's cockpit was designed for high-speed touring in comfort
A new 3670cc six-cylinder engine was designed by Tadek Marek in 1956
EngineDOHC Straight six, 3670 cc, 240 bhp @ 5000 rpm, 240 lbs-ft @ 4200 rpm
Transmission4-speed manual with optional overdrive or optional Borg-Warner 3-speed automatic
SuspensionFront: Telescopic shock absorbers
Rear: Lever arm shock absorbers
Brakes: Dunlop Servo assisted brakes with front and rear solid discs
Dimensions4480 x 1676 x 1321 mm (Saloon), 4480 x 1676 x 1323 mm (Convertible)
Top Speed140 mph
0 - 60 mph9 sec