CarBrandLogos archive · Shelby · 1962

ShelbyShelby Cobra

A British roadster, an American V8, and one Texan who saw what nobody else did.

Photo: Stahlkocher · CC BY-SA 3.0

The story

A defining chapter in Shelby history.

Explore the ideas, engineering and context that shaped the Shelby Cobra, then continue into its specifications and place in the marque's lineage.

Origins

Carroll Shelby had won Le Mans in 1959 with Aston Martin and then been forced out of driving by a heart condition. What he had left was an idea he had been carrying for years: take a light European sports car chassis and put a big, cheap, torque-rich American V8 in it. In 1961 he found both halves. AC Cars in Thames Ditton was about to lose the Bristol engine that powered its Ace, and Ford had just launched a compact, light thin-wall small-block V8 and was looking for performance credibility.

Shelby AC Cobra, CSX2000 · User:Jaydec · CC BY-SA 3.0

Design and engineering

The first cars were built in 1962: AC supplied rolling chassis by sea, Shelby American in Los Angeles installed the 260 and then the 289 cubic inch Ford V8 and a four-speed gearbox, and the result weighed almost nothing. The chassis was old-fashioned, a ladder frame with transverse leaf springs, but the power-to-weight ratio was ludicrous for a road car of the period and the Cobra was quicker in a straight line than almost anything on sale. Rack-and-pinion steering arrived early, and in 1965 a substantially new chassis with coil springs and wishbones was built to take the 427 cubic inch big block, producing the fat-arched car that most people picture at the word Cobra.

1965 Willment Cobra · Brian Snelson · CC BY 2.0

AC Cobra - 50th Annyversary Cobra Limited Edition CSX8000

In production

Driving one required commitment. There was no power steering worth the name on the early cars, the pedals were offset by the width of the chassis rails, the cockpit filled with heat from the engine and the side pipes, and the throttle response bore no relation to the grip available. Contemporary testers wrote about it with a mixture of awe and open nervousness, and the reputation for being difficult is a large part of why the name still carries weight. Racing was the point. The roadsters were quick but aerodynamically hopeless on the long straights at Le Mans and Reims, which is what produced the Daytona coupe, and Shelby's Cobras took the FIA world manufacturers title in the GT division in 1965, breaking Ferrari's hold on the class. That result gave Ford the racing credibility that fed directly into the GT40 programme and Shelby's role in it.

AC Cobra - 50th Annyversary Cobra Limited Edition CSX8000 · Steindy (talk) 21:19, 29 September 2014 (UTC) · GFDL 1.2

Legacy

Production was tiny by any normal measure and ended in 1967, but the Cobra never really stopped. AC built the MK IV, Shelby built continuation cars decades later using original chassis numbers, and an entire industry of replica manufacturers grew up around the shape, to the point where far more fake Cobras exist than real ones. Original cars are among the most valuable American vehicles ever made, and the recipe Shelby invented, minimal weight plus surplus American torque, is still the basis of a whole category of car.

At a glance

The facts that define it.

Produced

1962–1967

Body

2-door roadster

Technical specification

The Shelby Cobra, in detail.

Production: 1962–1967; Leaf-spring: 655; Coil-spring: 343
Class: Sports car (S)
Body style: 2-door roadster
Layout: FR layout
Assembly: Thames Ditton, Surrey, England, UK (AC Cars (EU) Ltd.); Los Angeles, California, U.S. (Shelby American, Inc.)
Manufacturer: AC Cars; Shelby American