But they aren't a shared GM platform with different names: they are completely different engines and unique in their own way. In fact, the Pontiac 455 isn't even a true big block engine like the ...

The engines that powered Pontiac's LeMans came in a huge variety of displacements and power outputs throughout its history.

In 1973, performance figures had dropped dramatically but some muscle cars could still hold their own in a straighr line ...

The 7.4-liter LSX454 V8 is a modern interpretation of the iconic 454 big block ... brands like Pontiac and Chevrolet, it produced one of the mightiest V8 engines of the '60s, the 455 V8.

LeMans is ready to leave for a new home; the car is almost in perfect shape, sporting a rare package and a big engine ...