Pontiac GTO - Fourth Generation - 2005

2005

The 2005 model year continued with the addition of standard hood scoops, split rear exhaust, and late in the year, optional 18 inch (45.7 cm) wheels. The major change for 2005 was the replacement of the LS1 engine with the LS2 engine. This 5,967 cc (364.1 cu in) engine increased power and torque in the GTO to 400 hp (300 kW) with 400 lb·ft (542 N·m) torque. With this improved powerplant, GM claimed the car capable of 0 to 60 mph (97 km/h) in 4.7 seconds and a 13.0 second quarter mile at 105 mph (169 km/h) (automatic transmission). Car and Driver magazine tested the car at 4.6 seconds 0-60 mph and 13.0 seconds at 106 mph (171 km/h) for the quarter mile, so the claims were justified. Dashboard gauge graphics were also revised. The optional dealer installed Sport Appearance Package became available and differed visually by having a different lower rear fascia that sported quad chrome exhaust tips, louder aggressive sounding mufflers, a modified spoiler, a modified front lower fascia extension, recessed grilles, and modified rocker panels. This package was available from GM as an accessory in red, silver, black, or primer for other color cars. Nonetheless, production was scaled back to 11,069, primarily because of a shortened model year. Barbados Blue and Cosmos Purple were dropped this year, but Cyclone Grey and Midnight Blue Metallic were added. Customers had the option to order their GTO without hood scoops, though only 24 were produced this way.