Read more: How To Clean Your Car's Engine Bay: A Step-By-Step Guide The Cobra roadster (of which only a handful were built) featured Ford's 289 engine and competed successfully in several ...

289-cu-in small block. By the time the Mustang's one year anniversary arrived in the Spring of 1965, more than 400,000 had been sold, and Ford had shuffled the engine offerings to nudge the ...