Ferrari 376 S
The Ferrari 376 S (also known as the 118 LM) was a sports racing car produced by Ferrari in 1955. It was the first raced Ferrari powered by a new Aurelio Lampredi-designed inline-6 engine, created as a larger alternative to the inline-4 series of engines used in the Ferrari Monza race cars. The intention behind the development of this model was the 1955 Mille Miglia race. It was yet another attempt by Ferrari to match the new Mercedes-Benz 300 SLR in competition. All of the created cars were further converted into a bigger capacity models . 306 S. The first Ferrari with an inline-six cylinder engine was the 306 S. It was a development prototype created in the late 1954. As the name suggests it sported a 3.0-litre (2,977.28 cc) "Lampredi" straight-six codenamed "tipo 114". The new engine was created by adding two cylinders to the existing inline-four family of tested and tried "Lampredi" engines, particularly the Ferrari 500 engine. The 306 had a short wheelbase and was bodied by Scaglietti. The prototype never raced and, by January the next year, was converted into the 376 S model by increasing its capacity  and stretching the wheelbase. Development. Prior to 1955, the Ferrari 750 Monza race car could produce a maximum of . This figure was not enough to match the power output of the new Mercedes-Benz 300 SLR, with its engine based on the straight-8, W196 Formula One champion. After creating a 3.0-litre prototype, Ferrari decided to increase the capacity further. Now at 3.7-litre, the new car could produce . This combined with a low weight could be enough to remain competitive. It was also decided to change the wheelbase to . Chassis numbers had an "LM" suffix. Body style was very  much an evolution of the 750 Monza also bodied by Scaglietti. One of the cars was later further rebodied by the same coachbuilder and received a distinctive, more round front grille and pontoon-fenders. The cars had raced in only a handful of races in 1955 and all four examples were subsequently upgraded to 4.4 L capacity, intended for the 1955 24 Hours of Le Mans. One car at the earliest by April 1955 for the Mille Miglia race. None of the 376 S' survive in their original form. Specifications. The enlarged engine was identified as the "tipo 118", hence  the common "118 LM" name of the car, even though this version did not participate in the Le Mans race. The internal measurements of one cylinder at of bore and stroke, were the same as the Ferrari 625 engine on which they were based. The total resulting capacity was 3.7 L (). The three Weber 58DCOA/3 carburettors helped produce at 6200 rpm. The engine used twin spark plugs per cylinder with two coils and had twin overhead camshaft design for two valves per cylinder. It also used a dry sump lubrication system. The tubular steel chassis identified as the "tipo 509