In 1962 AC was approached by Carroll Shelby to use a small block Ford V8 engine in the Ace chassis, producing the AC Cobra. Shelby needed a car that could compete with the Chevrolet Corvette in US sports car racing. The resulting Cobra was a very powerful roadster, and it is commonly blamed for the introduction of the 70 mph (110 km/h) limit on British motorways. While this was a major factor in the decision, after a coupe version was caught doing 196 mph (315 km/h) during a test run,  a then-recent spate of accidents under foggy conditions also helped the introduction of the limit.
At the end of the 1964 racing season, the Cobra was being outclassed in sports car racing by Ferrari. Carroll Shelby decided he needed a bigger engine. A big block Ford FE series 390 V8 was installed in a Cobra and the result was scary – the car was virtually undrivable. It was decided that a completely new chassis was needed. With the combined help of Ford’s computers and the experience of the AC engineers, the new MKIII was born with 4-inch (100 mm) main tubes instead of 3-inch (76 mm) for the chassis, huge cross-braced shock towers and coil springs all around. This, along with a bigger 427ci version of the FE, made the new AC Cobra MKIII an absolutely unbeatable 2, 200 lb (1, 000 kg) race car. Specifically, the engine that was installed in the car was Ford’s famed 427 FE NASCAR “Side-Oiler” V8, a power-house engine developing 385 bhp (287 kW) in its mildest street version. Unfortunately, the car missed homologation for the 1965 season and was not raced by the Shelby team. However, it was raced successfully by many privateers and went on to win races all the way into the 1970s. The AC 427 Cobra, although a commercial failure when in production, has now become one of the most sought-after and replicated automobiles ever.
So, ya2012-05-02 19:31:48 by -
1967 Chevrolet Corvette Le Mans Racer
Dick Guldstrand, Bob Bondurant, and Dick Yenko took this 1967 Corvette coupe with an L-88 427 ci engine to the 24 Hours of Le Mans. Dick Guldstrand set a new record speed of 171.5 mph on the Mulsanne straight. In the 13th hour, the engine failed, ending the race for the lone Corvette. This is the only mid-year (1963-67) Corvette to have ever competed in the 24hrs of Le Mans
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