The other new crate engine is a 427-cubic inch powerplant and is based on Ford’s Boss 351 engine block. With Ford Racing’s X-heads system, it makes 500-hp and 520 lb-ft of torque. But the new ...

With the Roush name prominently displayed on a number of performance-oriented Ford ... the engine that limit it to 430 ...

A Shelby 427 Competition ... 289 Ford V-8 in the lightweight AC Ace chassis to create the original Cobra, he upped the ante with the big-block 427 model. The bigger, more powerful engine required ...