Cylinder heads are understandably a vital ingredient in any recipe for "porcupine" horsepower pie, so whether the big-block in your Corvette is being built for street performance, drag racing, road ...

The C5 Z06 comes equipped with a small-block 5.7-liter LS6 engine, essentially a version of the standard C5’s LS1 with a higher compression ratio and wilder valve timing, as well as different cylinder ...