June 20, 2006

GM trucks to feature larger, more powerful engines

Pontiac, Michigan – General Motors has announced that for the 2007 model year, the Chevrolet Colorado, GMC Canyon and Hummer H3 will feature new, larger-displacement inline four- and five-cylinder engines.

The Vortec 2.9-litre DOHC four-cylinder with variable valve timing (VVT) will replace the previous 2.8-litre four-cylinder, delivering 185 hp and 190 lb-ft of torque. The Vortec 3.7-litre DOHC five-cylinder with VVT replaces the previous 3.5-litre engine, and is rated at 242 hp and 242 lb-ft of torque. The 2.9-litre is a six per cent horsepower and three per cent torque increase; the 3.7-litre has an increase of 22 hp and 17 lb-ft of torque.

The 2.9-litre is standard in all 2007 Colorado and Canyon models, except the 4WD Crew Cab; the 3.7-litre is standard on 4WD Crew Cab models and available on others, and is the sole engine in the 2007 Hummer H3. Both engines are built at GM’s Tonawanda, New York engine assembly plant.

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