Alfa Romeo Giulia GTA
The Alfa Romeo Giulia GTA — Gran Turismo Alleggerita, Italian for “lightened grand tourer” — is the competition-focused evolution of the Giulia Sprint GT coupé, introduced in 1965 as a homologation special built to qualify for FIA Group 2 touring car racing. Developed by Autodelta, Alfa Romeo’s official racing department headed by engineer Carlo Chiti, the GTA transformed the road-going Giulia GT by replacing steel body panels with aluminium alloy, substituting Plexiglas for the side and rear windows, stripping the interior of all non-essential equipment, and optimising the engine with a twin-spark-plug cylinder head. The result was a dry weight of approximately 745 kg — roughly 200 kg lighter than the steel-bodied Sprint GT — achieved while retaining the elegant Bertone-styled coupé bodywork that had made the Giulia GT one of the defining designs of the 1960s. Exactly 500 examples were produced between 1965 and 1969 to meet FIA homologation requirements.
The GTA’s 1,570 cc twin-cam inline-four engine received extensive development at Autodelta’s Settimo Milanese facility. The road-going Stradale version used twin Weber 45 DCOE carburettors and the new twin-plug cylinder head to produce 115 hp at 6,000 rpm — a modest figure, but achieved in a car weighing barely three-quarters of a tonne. The competition Corsa variant, further prepared by Carlo Chiti’s engineers, extracted up to 170 hp at 7,800 rpm with a top speed exceeding 220 km/h. A supercharged variant, the GTA-SA (1967–1968), pushed output to a remarkable 250 hp from the same 1,570 cc displacement; only ten were built. The GTA 1300 Junior (1968–1975) used a 1,290 cc engine with the same twin-plug technology, producing up to 165 hp in race trim with Autodelta fuel injection — a weapon aimed directly at the Mini Cooper S in the under-1300 cc touring class. The GTAm (1969–1973) displaced 1,985 cc and produced 240 hp at 7,500 rpm in approximately 40 examples; it contested the higher displacement classes and extended the GTA racing programme into the early 1970s.
In competition, the GTA’s record was immediate and dominant. It debuted at the 1965 Amsterdam Motor Show, won its first race in January 1966 (the “Refrigerator Bowl” at Marlboro Raceway, USA, with Monty Winkler and Pete Van der Vate), and then took all seven top positions at the 1966 European Touring Car Championship season opener at Monza. Andrea de Adamich clinched both the drivers’ and constructors’ titles in the 1966 ETCC. The GTA went on to win the European Touring Car Championship in 1966, 1967, 1968, 1970, and 1971, with the GTAm variant contributing to further successes into the early 1970s. Horst Kwech and Gaston Andrey in an Autodelta-prepared GTA also won the under-2-litre class of the inaugural 1966 SCCA Trans-Am championship in North America. The GTA is regarded as one of the most successful touring car racing programmes of the 1960s, enabling a comparatively small-displacement Italian coupé to defeat far larger and better-funded opposition across multiple continents.
Legacy and Variants
The GTA name was revived by Alfa Romeo for limited-edition versions of the Alfa Romeo Giulia 2016 in 2020, with the modern GTA and GTAm designations deliberately echoing the original 1965–1973 programme. The Giulia GTA’s combination of lightweight construction, systematic Autodelta development, and prolific racing success established a template for how a road-car homologation special could dominate a racing category — a legacy that influenced Alfa Romeo’s competition strategy for decades.
Connections
- Autodelta — developed and prepared, 1965–1973, source: wikipedia.org
- Carlo Chiti — technical director (Autodelta), source: stellantisheritage.com
- Alfa Romeo Giulia 1962 — based_on (Sprint GT platform), source: wikipedia.org
- Alfa Romeo Giulia 2016 — name revived for modern GTA/GTAm, source: wikipedia.org
- Bertone — original coupé bodywork design, source: grokipedia.com