Due to stricter government regulations, the era of unrestrained factory-built performance was coming to an end in 1971. However, GM's excitement division answered with the largest displacement engine ...

The 1971 Pontiac Trans Am 455 HO arrived just as muscle cars were being choked by new emissions rules, rising insurance premiums, and a shift toward smaller, thriftier machines. Instead of retreating, ...

GM offered two massive 455-CI big-block V8s in the late 1960s and early 1970s, one each from Oldsmobile and Pontiac. But how ...

When it comes to classic American muscle cars, you'll hear the terms "small block" and "big block" thrown around quite a bit. As one might assume, it's in reference to the actual physical size of V8 ...