The Gen III LS1 engine factory-installed in '98-'02 Firebirds, '04 GTOs and the Gen IV LS2 between the fenders of the '05-'06 GTOs are excellent powerplants. Current LS2 engines are rated at 400 hp ...

The power potential built into each and every late-model LS-powered Pontiac is widely known. With their exceptional cylinder-head flow, compact dimensions, great strength, and hunger for nitrous, the ...

After owning a 2006 GTO (with the LS2 400 hp engine and 4L65-E automatic) for three months, I don't understand why GM didn't promote this car more vigorously. It's an absolute blast to drive--no, it's ...

Interested in a daily driver that has 476 rwhp on tap, can idle like a stocker in traffic jams, run 11-second quarter-miles, and get 26 miles per gallon on the highway? Working with a 2004 GTO, Rick ...

Automotive enthusiasts know very well that Pontiac’s original GTO is credited in some circles with making the muscle car market a popular choice back in the 1960s. Interestingly, the series has always ...

This forgotten American performance coupe secretly produced 400 horsepower, delivering muscle car speed without the styling ...