The Aston Martin DB4 was available from 1958 until 1963. It was
an entirely different car from the DB Mark III it replaced, though
the 3.7 L engine was externally visually related to the 2.9 L unit
found in that car.
The lightweight tube-frame body was designed by Carrozzeria Touring
in Milan, and its Continental looks caused a sensation on its unveiling
at the 1958 London Motor Show. Although the design and construction
techniques were Italian, the DB4 was the first Aston to be built
at the company's Newport Pagnell works in Buckinghamshire, England.
The DB4 GT was a special lightweight, high-performance version
of the DB4. Introduced in September 1959, the GT's featured enclosed
headlights and a thinner aluminum skin for lighter weight. The wheelbase
was also reduced in comparison to the standard car, which resulted
in many cars not being fitted with rear seats.
The unique engine made the GT special. Available in 3.7 L and 3.8
L versions, the GT's engine had twin spark plugs per cylinder with
two distributors and three twin-choke Weber carburetors. Modifications
to the cylinder head brought compression to 9:1 and power output
was 302 hp. Maximum speed for the GT was 151 mph with a 6.1 second
sprint to 60 mph.
Seventy five GT's were built with this body style. Nineteen more
were modified by the Zagato works in Italy into DB4 GT Zagatos,
with plain oval grilles and a smoothed out rear end. A single car
was also styled by Bertone and dubbed the Bertone Jet.