Introduced for 1956, the 100-6 represented the most radical step forward in the “Big Healey” sports car development. Despite its initial success, sales of the original Austin-Healey 100 had begun to decline by the mid-1950s, so the model was revamped as the 100-6, BMC’s 2.6-liter C-series six-cylinder engine replacing the original four-cylinder Austin Atlantic unit. ...

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