1955 Ferrari 857 S

The 857 was equipped with the largest displacement version of the legendary four-cylinder in-line which started its career with World Championship victories in 1952 and 1953 and was later upped to a three-litre with the same external block dimensions.

The very few Type 857 S models built served as a basis for the development of its successor, the Type 860 Monza, which differed from it in certain technical details, such as the number of gears (four instead of five) and the shape of the majestic Scaglietti bodywork.

Ferrari 857 S Technical Specifications

Year of Manufacture – 1955

type front, longitudinal, in-line four
bore/stroke 102 x 105 mm
unitary displacement 857.98 cc
total displacement 3431.93 cc
compression ratio 8.5 : 1
maximum power 206 kW (280 hp) at 6000 rpm
power per litre 82 hp/l
maximum torque
valve actuation twin overhead camshaft per bank, two valves per cylinder
fuel feed two Weber 58 DCOA/3 carburettors
ignition two spark plugs per cylinder, two coils
lubrication dry sump
clutch multi-plate
frame tubular steel
front suspension independent, unequal-length wishbones, coil springs, hydraulic shock absorbers, anti-roll bar
rear suspension de Dion, twin radius arms, upper transverse leaf spring, hydraulic shock absorbers
brakes drums
transmission 5-speed + reverse
steering worm and sector
fuel tank
front tyres 5.50 x 16
rear tyres 7.00 x 16
type two-seater spider
wheelbase 2250 mm
front track 1278 mm
rear track 1284 mm
top speed
acceleration 0-100 km/h
0-400 m
0-1000 m

Ferrari 857 S Servicing