Makes › Alfa Romeo › 8C › 8C 2900A · Factory competition · 1936 Ultra Rare
Alfa Romeo
8C 2900A
Detuned GP-engine sports-racers (1-2-3 at 1936 Mille Miglia); predecessor of road 8C 2900B
Still being researched: identification guide, full specifications. Everything shown is checked against the cited sources. Know more? Send us a source.
Photo: 123 Chroma Pixels · CC BY-SA 2.0
Contents
01Overview
At a glance
- Built
- 6 Built
- Years
- 1936
- Engine
- Supercharged straight-eight, two alloy four-cylinder blocks on a common crankcase, twin overhead camshafts · 2,905 cc / 2.9 LFactory: 2,905 cc
- Power
- 164 kW / 223 PSFactory: 220 hp · converted
- Top speed
- Not yet verified
- Body
- Not yet verified
- Designer
- Vittorio Jano (engine)
- In this archive
- Not yet verified
- Surviving
- Not yet verified
Sources and any conflicting figures are in the sections below.
Why it matters
The 8C 2900A was a sports-racing car built around a detuned Grand Prix straight-eight, created to win the Mille Miglia. Only six were built, and they took the first three places in the 1936 race, laying the foundation for the road-going 8C 2900B.
How rare is it?
Six separate kinds of rarity – never combined into one number.
Each kind of rarity is rated separately and never combined.
Photos
Exterior, interior and detail photos with their licences.
Alfa Romeo 8C 2900A (Wikimedia Commons: Alfa Romeo 8C 2900A Spider Corsa 412.015 in the Simeone Foundation Automotive Museum)
Photo: 123 Chroma Pixels · CC BY-SA 2.0
Alfa Romeo 8C 2900A (Wikimedia Commons: Alfa Romeo 8C 2900A Spider Corsa 412.015 in the Simeone Foundation Automotive Museum)
Photo: 123 Chroma Pixels · CC BY-SA 2.0
Alfa Romeo 8C 2900A (Wikimedia Commons: Alfa Romeo 8C 2900A Spider Corsa 412.015 in the Simeone Foundation Automotive Museum)
Photo: 123 Chroma Pixels · CC BY-SA 2.0
Alfa Romeo 8C 2900A (Wikimedia Commons: Alfa Romeo 8C 2900A Spider Corsa 412.015 in the Simeone Foundation Automotive Museum)
Photo: 123 Chroma Pixels · CC BY-SA 2.0
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02Production & history
Production
Every figure says what it counts.
| What is counted | Figure | Basis | Status |
|---|---|---|---|
| Total model production8C 2900A cars constructed | 61 | Factory production | Independently researched |
Independent counts (e.g. engine and colour) are never combined into a calculated figure. Surviving examples are never presented as original production.
History
Designed specifically for the Mille Miglia, the 2900A combined Vittorio Jano's supercharged eight-cylinder engine, enlarged to 2.9 litres mainly by a longer stroke, with all-round independent suspension using front wishbones and rear swing axles. Three cars ran in the 1936 Mille Miglia and finished first, second and third, with Brivio and Ongaro winning. A second Mille Miglia victory followed in 1937.
Variants
How each version differs from the standard 8C 2900A.
No variants documented yet. Have a source? Contribute it.
03Specifications
Technical specifications
Engine
| Engine family | Not yet verified |
|---|---|
| Engine code | Not yet verified |
| Layout | Supercharged straight-eight, two alloy four-cylinder blocks on a common crankcase, twin overhead camshafts2 Independently researched |
| Displacement | 2,905 cc / 2.9 LFactory: 2,905 cc2 Independently researched |
| Bore | Not yet verified |
| Stroke | Not yet verified |
| Compression ratio | Not yet verified |
| Fuel system | Not yet verified |
| Induction | Two Roots-type superchargers2 Independently researched |
| Power | 164 kW / 223 PSFactory: 220 hp · converted2 Independently researchedSource states bhp (brake horsepower, mechanical). |
| Power at | Not yet verified |
| Torque | Not yet verified |
Transmission & drivetrain
| Gearbox | Not yet verified |
|---|---|
| Gears | Not yet verified |
| Driven wheels | Not yet verified |
Chassis, body & dimensions
| Chassis | Not yet verified |
|---|---|
| Front suspension | Independent, wishbones2 Independently researched |
| Rear suspension | Independent, swing axles2 Independently researched |
| Brakes | Not yet verified |
| Steering | Not yet verified |
| Body construction | Not yet verified |
| Wheelbase | Not yet verified |
| Length | Not yet verified |
| Width | Not yet verified |
| Height | Not yet verified |
| Front track | Not yet verified |
| Rear track | Not yet verified |
| Kerb weight | Not yet verified |
| Dry weight | Not yet verified |
Performance
| Maximum speed | Not yet verified |
|---|---|
| 0–100 km/h | Not yet verified |
| Fuel tank | Not yet verified |
“Not yet verified” means no source has been checked for that value yet. Nothing is estimated to fill a gap.
04Colours & options
Factory colours & interiors
Original paint and trim, with the number of cars in each where a source gives it.
Not yet documented. Have a source? Contribute it.
Factory options & codes
Codes are shown exactly as written by the manufacturer.
Not yet documented. Have a source? Contribute it.
05Individual cars
Chassis register
Every documented car, with its colours, history and where it is now. Open a row for the full record. Known chassis are not automatically authenticated originals.
Not yet documented. Have a source? Contribute it.
Competition history
Every race result of the individual cars, in date order. Click a chassis number to open its full record in the register.
Not yet documented. Have a source? Contribute it.
Auction & sale history
Documented public sales of the individual cars. Click a chassis number to open its full record in the register.
Not yet documented. Have a source? Contribute it.
See one in person
Museums where an example of this car can be seen.
No example is documented on public display yet. Have a source? Contribute it.
06Reference
Identification guide
How to tell an original from a replica or later conversion.
Not yet documented. Have a source? Contribute it.
Sources
Each number links to the exact facts it supports.
-
1
1936 Alfa Romeo 8C 2900A Spider - Ultimatecarpage.com Level C
- 6 8C 2900A cars constructed
-
2
Alfa Romeo 8C 2900A Spider Level C Ultimatecarpage.com
- two alloy four-cylinder blocks mounted on one crankcase
- engine grew from 2336 cc to 2905 cc
- two Roots-type superchargers
- 220 bhp
- wishbones at the front
- swing axles at the rear
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