In July of 1972, Aston Martin took took an unusual step by reverting from Bosch’s mechanical fuel injection to a quartet of Weber carburetors.

To clear the four twin-choke, 42mm Weber carburetors and their airbox, a larger scoop was fitted on the hood.

Besides other small detail changes to the seats, switchgear and some smaller items, the car remained much the same until production changed to the Series 4 in 1978.

type	Series Production Car
production years	1973 – 1978
built at	England
price $	$ 33,950
engine	V8
position	Front, Longitudinal
aspiration	Natural
valvetrain	DOHC
fuel feed	4 Weber Carburetors
displacement	5340 cc / 325.9 in³
bore	100.08 mm / 3.94 in
stroke	85.1 mm / 3.35 in
compression	8.3:1
power	231.2 kw / 310 bhp @ 5600 rpm
specific output	58.05 bhp per litre
bhp/weight	166.49 bhp per tonne
body / frame	Aluminum & Steel
driven wheels	Front Engine / RWD
front tires	225/70VR-15
rear tires	225/70VR-15
front brakes	Vented Discs w/Vacuum Assist
front wheels	F 38.1 x 17.8 cm / 15.0 x 7.0 in
rear wheels	R 38.1 x 17.8 cm / 15.0 x 7.0 in
steering	Rack & Pinion
curb weight	1862 kg / 4105 lbs
wheelbase	2611 mm / 102.8 in
front track	1499 mm / 59.0 in
rear track	1499 mm / 59.0 in
length	4648 mm / 183.0 in
width	1829 mm / 72.0 in
height	1328 mm / 52.3 in
transmission	ZF 5-Speed Manual
gear ratios	2.90:1, 1.78:1, 1.22:1, 1.00:1, 0.85:1
top speed	~225.3 kph / 140.0 mph
0 – 60 mph	~7.4 seconds
0 – 100 mph	~19.6 seconds
0 – 1/4 mile	~15.7 second