It was developed in 1959 in replacement of the SZ model, utilizing most of the series assemblies. The manufacture started in 1960 and the first road test was carried out in 1961.

The start of its series production was however delayed because of the priority given to the issue of the new Giulia and 2600 models.

It was put on for sale in 1963 with the 112 HP engine identical to that of the Sprint Special. This engine was successively worked out for taking part in Grand Touring Category races.

After the first appearance in trial competitions the Giulia TZ was immediately capable of obtaining successes in its class in important races such as the FISA Cup in Monza in 1963, the 12 Hours of Sebring, the Tour de France, the 48th Targa Flono, the 1000 Km at Nurburgring, the 24 Hours of Le Mans, the Coupe des Alpes (1st overall), the Tour de Corse (1st and 2nd overall) in 1964, and getting in 1965 the 1st, 2nd and 3rd place of class again at Sebring and then the first place of class in the Targa Flono. These successes are thus confirming it as the car not only fit to competitions on tracks but also to the most severe races on road.

In cooperation with bodymaker Zagato the firm tested with success on this car the plastic material outside coating instead of the light alloy one; the last 10 of the approx. 120 cars manufactured were actually produced with this new body.

A further lowered TZ prototype, called (<Canguro>), was shown by the bodymaker Bertone at the 1964 Turin Motor Show.

A lowered frame car, called "TZ 2", was manufactured also by Zagato in 1965. It took part to several races.

The racing engines were fitted in 1965 also with a twin ignition cylinder head.

- "Alfa Romeo - All Cars from 1910" by Luigi Fusi