The 2005 and 2006 models packed a 6.0L LS2 V8 engine with tons of grunt. In the horsepower department, the Pontiac GTO 6.0 engine doesn't disappoint: it clocks in at 400 horsepower, with 400 lb-ft ...

a faster 6.0-liter LS2 V8 engine was added, offering a whopping 400 horsepower, an increase of 50 from the previous year, and 395 lb-ft of torque, an increase of 40. A new dual exhaust system (split) ...

Nothing like a import Turbo Spool and Blow off Valve. However I own a 2006 GTO as my daily driver. In fact this is my second 6.0 GOAT. They are Cyclone Grey. 1st one I had I sold to my brother who ...