x
Home » Racing Sports Cars » Ferrari 275 GTB
Source
Chassis numbers
Competizione Specialle chassis numbers
Competizione Series I Clienti "short nose" chassis numbers
Chassis 6785 with 6 carbs photos
Specifications
454 units built
4 units Competizione Specialle (alloy bodyshell)
10 units Competizione Clienti (alloy bodyshell)
Click here and here and here and here and here and here
Click here for S2 6 carbs
Homologation number: GT 202 and 519 (group 3)
Homologation start: 1/6/1965 and 1/1/1966
Colombo 275 Tipo 213, V12 (60o) cyl, 4 stroke, petrol engine, located front longitudinally
3.286cc, 77.0 x 58.8 mm
9.2:1
206 kW / 280 hp @ 7500 rpm
216.8 lb-ft / 294 Nm @ 5000 RPM
light alloy block and head
2 valves / cylinder, SOHC
aspiration: natural with 3 x Weber 40 DCN/3, 6 x Weber 40 DCZ/6 or 6 x Weber 40 DCN3 Carburetors
1 spark plug/cyl, 2 ignition coils
water cooled
wet sump
Rear-Mounted 5 speed manual gearbox (First Ferrari with transaxle gearbox+differential in a common case)
1st: 3.076/1
2nd: 2.119/1
3rd: 1.572/1
4th: 1.25/1
5th: 1.038/1
R: 2.674/1
final drive, 3.555/1, 3.3/1
dry Single plate clutch
Tipo 563 Tubular Steel Chassis, 2 door steel Scaglietti Berlinetta bodyshell short (series I) or long (series II) nose, alloy bodyshell for Competizione
front suspension, double Unequal wishbones with Coil Springs over Koni Shock absorbers, Anti-Roll Bar
rear suspension, double Unequal wishbones with Coil Springs over Koni Shock absorbers, Anti-Roll Bar
ZF worm and roller steering
Dunlop Solid Disk brakes all around, front disc diameter 279mm, rear disc diameter 275mm
Length: 4325 mm / 170.3", Long nose 4410 mm / 173.6"
Width: 1725 mm / 67.9"
Height: 1245 mm / 49.0"
Wheelbase 2400 mm / 94.5"
front track 1377 mm / 54.2"
rear track 1393 mm / 54.8"
front/rear wheels, 6.5 - 7 x 14"
195 or 205 x 14", 205/80-R14" or 205 VR 15"
1100kg
fuel tank, 94 lt
drag coefficient, short nose: 0.4, long nose: 0.38
Results in WSCC
SEFAC=Societa Esercisio Fabriche Automobili e CorseRunning in Prototype (P) category until Nurburgring (23.5.1965)
| Car entry, chassis number | Car number/ result | |||||||||||||||||
| Dayt | Sebring | Monza | Tourist trophy | Targa Florio | Spa | Nurb | Mugelo | Rossfeld | Le Man | Reims | Bolzano Mendola | CdE | Ollon | Bridgeh | ||||
| Team | 2000km | 12h | 1000km | 500km | 1000km | Hill climb | 24h | 12h | Hill climb | Hill climb | 500km | |||||||
| SpA Ferrari SEFAC, 6885 (Specialle) | #196, OTL | #3, 13th | #24, 3rd* | #19, 11th* * | ||||||||||||||
| SpA Ferrari SEFAC | #T, spare car | |||||||||||||||||
| E. de Vroom/ Tom O'Brien, 07185 (Specialle) | #33, in entry list | |||||||||||||||||
| Ecurie Francorchamps, 6507GT | #6, dnf | |||||||||||||||||
| Franco-Brittanic | #7, in entry list | #9, in entry list | #30, in entry list | |||||||||||||||
| Scuderia Montegrappa | #111, dnf | |||||||||||||||||
| Scuderia Montegrappa, 6021 (Specialle) | #116, 16th | #16, 8th | ||||||||||||||||
| Scuderia Sant Ambroeus | #32, in entry list | |||||||||||||||||
| Scuderia Sant Ambroeus | #33, in entry list | |||||||||||||||||
| North American Racing Team | #57, in entry list | |||||||||||||||||
| Siegfried Zwimpfer, 6785 | #137, 32nd | |||||||||||||||||
| Total points 11 |
8 | 3 | ||||||||||||||||
| Statistics | ||||||||||||||||||
| Works Starts/finishes 9/6 | 1/0 | 1/0 | 1/1 | 2/1 | 1/1 | 1/1 | 1/1 | 1/1 | ||||||||||
| Drivers | Team entries and car number | |||||||||||||||||
| SpA Ferrari SEFAC | ||||||||||||||||||
| Giampiero Biscaldi | 196 | 3 | ||||||||||||||||
| Bruno Deserti | 196 | |||||||||||||||||
| Giancarlo Baghetti | T | 3 | ||||||||||||||||
| Nino Vaccarella | T | |||||||||||||||||
| Lorenzo Bandini | T | |||||||||||||||||
| Jean Guichet | T | |||||||||||||||||
| Ludovico Scarfiotti | T | |||||||||||||||||
| Mike Parkes | T | |||||||||||||||||
| Ecurie Francorchamps | ||||||||||||||||||
| Xavier Boulanger | 6 | |||||||||||||||||
| Willy Mairesse | 24 | |||||||||||||||||
| "Jean Beurlys" | 24 | |||||||||||||||||
| Scuderia Montegrappa | ||||||||||||||||||
| Antonio Maglione | 111, 116 | |||||||||||||||||
| Mario Maglione | 116 | 16 | ||||||||||||||||
| Scuderia Sant Ambroeus | ||||||||||||||||||
| Giancarlo Sala | 32 | |||||||||||||||||
| Franco-Brittanic | ||||||||||||||||||
| Michel de Bourbon-Parme | 30 | |||||||||||||||||
| "Bouchon" | 7 | 9 | 30 | |||||||||||||||
| North American Racing Team | ||||||||||||||||||
| George Arents | 19 | |||||||||||||||||
| Bob Hutchins | 19 | |||||||||||||||||
*Ecurie Francorchamps entry
* *North American Racing Team entry
FerrariChat information
The earliest are the original design shortnose cars - a larger more rectangular grille (relatively) with small bumpers below the outer corners of the grille. The hood has a broad ridge in the hood rising slightly out of the hood surface toward the rear; ridge probably 70% of the hood width. Small rear window, the hinges of the trunk are not visible, as they are inside the trunk. Steering wheel has slotted spokes with slots of unique pattern. Steel floors. 14" Campagnolo "star-burst" wheels (or Borrani wires as option)
The short nose caused lift at higher speeds, so the body was revised to lengthen the nose - hence the reference longnose - to improve stability. Longer nose, smaller grille, recessed into the opening, accompanied by longer front bumpers that now curl into the mouth of the grille. The longnose hood is smooth, no bulges at all. Around the same time, the rear window is enlarged, and chrome trunk hinges become external and visible on the outside. The wheel design is changed to the square hole 14" Campagnolos and again the wire wheels are optional, now the RW4039. During the transition from shortnose to longnose, there are examples of mixed features (example: a longnose with small rear window and inside hinges, earlier wheels). Steering wheel changes to non-slotted style with engraved pattern on spokes. The torque-tube cars have fiberglass floors.
On alloy body cars, there is a visible seam in the roof by the upper corners of the rear window - the visual clue to an alloy car. All cars whether primarily alloy or steel body have alloy hood, trunk and door skins if not mistaken.
Other small features throughout the range that are occassional - outside fuel filler,etc. A few select examples with small accessory chrome trim accents appear here and there. There is a debate whether any of the late longnose cars had a chrome horse on the trunk like a 4-cam (I believe some did, having seen it on an unrestored car years ago.)
Some of the chassis evolution and fuel tank changes influence the shape of the luggage shelf. Some seats made with cloth center inserts instead of all leather, with no particular relationship to production sequence.
4-cam is similar to long-nose (I am not trying to explain the evolution of mechnical differences of the various 275's). The grille however of the 4-cam is a little wider and very slightly different shape; the rear spoiler lip is more pronounced and more vertical; the hood has the narrow pronounced raised bulge from front to back, down the center. The instrument panel is now typically trimmed in black vinyl instead of the typical wood veneer of the 2-cam (I've had the wood judged as both teak or walnut - not sure which is correct). That said, I think there were a few 2-cams with a black vinyl panel.
As for the vent slots behind the rear wheels, reserved for select competition 275GTBs, not the normal road GTBs. Then there is the small range of alloy competition GTB/C, which appear like a GTB, but I think had very slightly wider fenders to accommodate wider racing tires on 15" Borrani RW4010/RW4011, the fronts out-side laced.
I might add you can always tell a short nose car from the side by the door locks. The short nose variation has the key insert on the button. Also, short nose wheel size is 6 1/2 x 14 wheels where the long nose cars use 7 x 14.
And there are SN with flat bonnets and some with slightly recessed one , but not so much towards the center and not so high as on the GTB/4. Some think they are related to 3 carbs and 6 carbs, but if fact a lot of those bonnets are on 3 carbs cars, while most if not all 3 carbs LN have flat bonnets.
SourceSeries I "Short nose"
SourceSeries I "Short nose"
SourceSeries II "Long nose"
Source
Source
SourceCompetizione Speciale chassis #07185
SourceCompetizione Speciale
SourceCompetizione Speciale
SourceCompetizione Speciale
SourceCompetizione Speciale chassis #06701
Drawings
Competizione Specialle
Source
Source
