# ALFA Grand Prix

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Motor vehicle

ALFA 40/60 GP Baragiana and Giuseppe Merosi in the 1921 version Overview Manufacturer A.L.F.A. (1914) Alfa Romeo (1920-1921) Also called ALFA GP Production 1914 and 1920-1921 Assembly Milan, Italy Designer Giuseppe Merosi Body and chassis Class Racing car Body style 2-seater Open-wheeler Layout FR Layout Related ALFA 40/60 HP Powertrain Engine 4,490 cc (274.0 cu in; 4.5 L) straight four Twin Overhead cam Capacity 2-Door Power output 88–102 hp (89–103 PS; 66–76 kW) @ 2,750-3,000 rpm 145–163 lb⋅ft (196.6–221.0 N⋅m) @ 1,500-2,200 rpm Transmission 4-speed Chain drive Manual Dimensions Wheelbase 2,950 mm (116.1 in) Length 3,200 mm (126.0 in) Width 1,900 mm (74.8 in) Height 1,633 mm (64.3 in) Curb weight 870 kg (1,918.0 lb) Chronology Successor ALFA 40/60 HP

**ALFA 40/60 GP** or **GP** (Grand Prix) was a fully working early racing car prototype made by the company now called [Alfa Romeo](/source/Alfa_Romeo). Only one example was built in 1914, which was later modified in 1921. This was the creation of [Giuseppe Merosi](/source/Giuseppe_Merosi) and was the first Alfa Romeo [DOHC](/source/DOHC) engine. It had four valves per cylinder, 90 degree valve angle and twin spark ignition. Usually Alfa Romeo DOHC engines are thought to be [Vittorio Jano](/source/Vittorio_Jano)'s creations but the first one was Merosi's GP car. This kind of engine architecture was very new for the time, originating from 1912/1913 [Peugeot](/source/Peugeot) designed by Swiss engineer [Ernest Henry](/source/Ernest_Henry_(engineer)). The history of this engine architecture is unclear, but other cars with dual overhead camshafts were made by [Sunbeam](/source/Sunbeam_Motor_Car_Company), [Delage](/source/Delage) and [Humber](/source/Humber_(car)). This 1914 GP car was intended to take part in the [French Grand Prix](/source/French_Grand_Prix) of that year, but for reasons unknown this never happened. In 1921 [Giuseppe Campari](/source/Giuseppe_Campari) took part in the Gentlemen G.P. in [Brescia](/source/Brescia) with the modified GP car, but was forced to retire due to a leaking radiator.[1]

The GP engine had a displacement of 4.5 litres (4490 cc) and produced 88 bhp (66 kW) at 2950 rpm and after modifications in 1921 102 bhp (76 kW) at 3000 rpm. The top speed of this car was 88–93 mph (142–150 km/h). It was not until the 1920s when these [DOHC](/source/DOHC) engines came to Alfa road cars like the [Alfa Romeo 6C](/source/Alfa_Romeo_6C).

## Notes

1. **[^](#cite_ref-alfaromeo.com.au_1-0)** ["The Grand Prix from 1914"](https://web.archive.org/web/20070219155610/http://www.alfaromeo.com.au/default.asp?action=article&ID=17503). *alfaromeo.com.au*. Archived from [the original](http://www.alfaromeo.com.au/default.asp?action=article&ID=17503) on 2007-02-19. Retrieved 2007-04-26.

## References

- [VeloceToday.com](http://www.velocetoday.com/cars/cars_75.php) Retrieved on 2007-04-26.

- Borgeson, Griffith (1990). *The Alfa Romeo Tradition*. City: Haynes (Foulis) Publishing Group Ltd. Somerset, UK. [ISBN](/source/ISBN_(identifier)) [0-85429-875-4](https://en.wikipedia.org/wiki/Special:BookSources/0-85429-875-4).

v t e Alfa Romeo A marque of Stellantis Brands Marques Active Alfa Romeo Defunct FNM Divisions, joint-ventures and subsidiaries Former & defunct Fábrica Nacional de Motores (FNM) Alfa Romeo Avio Società Pompe Iniezione Cassani & Affini (SPICA) Società Franco Italiana Motori (Sofim) Alfa Romeo Nissan Autoveicoli S.p.A. Predecessors & old names Società Italiana Automobili Darracq (S.I.A.D.) (predecessor) Anonima Lombarda Fabbrica Automobili (A.L.F.A.) (old name) Current cars 33 Stradale Giulia Junior Stelvio Tonale Future cars Castello Historic and discontinued models 24 HP 40-60HP 20-30HP G1/G2 RM RL 4C 4C Spider 6C 8C 1900 Matta Giulietta 2000 Giulietta Sprint Speciale Giulia 2600 105/115 Series Coupés GTA Gran Sport Quattroruote Spider (105/115) 1750 Berlina 33 Stradale MiTo Montreal 2000 Berlina Alfasud Alfetta Alfetta GT Sprint Nuova Giulietta Giulietta Alfa 6 Arna 33 75 90 164 SZ RZ 155 GTV Spider (916) 145 146 156 166 147 GT 159 Brera Spider (939) 8C Competizione 8C Spider Concept cars 1000 Abarth 2000 Sportiva 2uettottanta 33.2 4C Concept BAT series Bella Brera Caimano Canguro Carabo Dardo Delfino Disco Volante Disco Volante (2013) Diva Eagle Giulia Sport Gloria Iguana Issima Kamal Monospider Navajo New York Taxi Nuvola Pandion Proteo Sportut Scarabeo Scarabeo II Scighera Tipo 103 Visconti TZ3 Vivace Vola Zeta 6 Tonale Concept Buses 40A 80A 85A 110A 140A 150A 430A 500A 800A 900A 902A 950A Mille Trolleybuses 110AF 140AF 800AF 900AF Mille AF Trucks 50 80 85 110 350 430 450 500 800 900 950 Mille A15 A19 A38 F20 Racing cars Grand Prix P1 P2 P3 Tipo A Tipo B (P3) Tipo C (8C-35) Tipo 308 Tipo 312 Tipo 316 Bimotore 12C Tipo 512 158/159 Alfetta TZ/TZ2 GTA Tipo 33 177 179 182 183T 184T 185T SE 048SP 155 V6 TI Alfa Special Vans Romeo A11/F11 A12/F12 AR6 AR8 Motorsport Companys Alfa Romeo in motorsport Alfa Romeo in Formula One (Results) Scuderia Ferrari Alfa Corse Autodelta N.Technology Jolly Club Alfa GTV Cup Technologies Blue&Me Selespeed Multiair Alfa Romeo engines (aircraft engines) platforms Places and facilities Alfa Romeo Museum Alfa Romeo Arese Plant Alfa Romeo Cassino Plant Alfa Romeo Pomigliano d'Arco plant Alfa Romeo Portello Plant Balocco People Nicola Romeo Giuseppe Merosi Vittorio Jano Enzo Ferrari Rudolf Hruska Carlo Chiti Gioacchino Colombo Wifredo Ricart Orazio Satta Puliga Giuseppe Busso Ugo Gobbato Sergio Limone Drivers Formula One drivers Tazio Nuvolari Giuseppe Campari Achille Varzi Luigi Arcangeli Clemente Biondetti Antonio Ascari Ugo Sivocci Jean-Pierre Wimille Guy Moll Gastone Brilli-Peri Baconin Borzacchini Other Alfa Romeo I Alfa Romeo II Alfa Romeo III Alfa Romeo Racing Italiano History of Alfa Romeo Category Commons

v t e Alfa Romeo car timeline, 1910s–1940s — next » Ownership Ugo Stella & investors Nicola Romeo IRI Type 1910s 1920s 1930s 1940s 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 4-cyl. 12 HP/15 HP 15-20 HP WWI [α] WWII 24 HP RM 20-30 HP [α] 20-30 ES 40-60 HP 6-cyl. G1 RL 6C 1500/1750/1900 6C 2300 6C 2500 8-cyl. 8C 2300 8C 2900 Grand Prix car GP P1 P2 Tipo A Tipo B (P3) 8C 35 158 158 308 Bi motore 12C 312 512 316 162 Notes [α] 105 A.L.F.A 15-20 HP and 20-30 HP started in 1915 were completed in 1920, after the war, as Alfa Romeo models.

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Adapted from the Wikipedia article [ALFA Grand Prix](https://en.wikipedia.org/wiki/ALFA_Grand_Prix) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/ALFA_Grand_Prix?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.