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 ...

With bolt-ons including Stainless Works headers, our 2005 GTO project previously made 375.9 hp and 372.7 lb-ft on SLP's Superflow dyno. Then Stainless Works bolted up its new 3-inch exhaust system at ...

When most Pontiac fans think of blown GTOs, images from the mid '60s of GTO match racers driven by Don Gay, Dick Jesse, Arnie Beswick, and others are likely to come to mind. However, the world's a ...