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1963 Shelby 289 Hi-Po Cobra Roadster, Early Rack and Pinion Demonstrator
While Carroll Shelby’s first Cobra sports cars bore astonishing power and handling, they were not immediately suited to the rigors of pure competition and were subject to constant development.
Substituting the original 260 CI engine with the new 289 CI version of Ford’s V-8 was the obvious first step, but another important change was in the offing. Initial race testing had revealed inherent problems with the early Cobra’s worm and sector steering that caused unpredictable steering geometry changes. Working with Shelby’s masterful chief engineer Phil Remington, AC Cars chief engineer Alan Turner made a comprehensive design change to the front end, incorporating the new rack and pinion system while maintaining the transverse leaf suspension. The rack and pinion cars entered production in early 1963, designated as Mark II cars.
Source: http://freenorthcarolina.blogspot.com/2014/03/1963-shelby-289-hi-po-cobra-roadster.html
