Cobalt offers three race-inspired Ecotec four-cylinder engines, one proven automatic transmission and two manual transmissions. The Ecotec family includes a standard 2.2-liter engine in the base, LS, and LT models; a new 2.4-liter engine standard in the SS coupe and sedan; and a 2.0-liter supercharged engine standard in the SS Supercharged coupe.
The Ecotec 2.2-liter engine delivers an estimated 140 horsepower and 150 lb.-ft. of torque. The combination of increased displacement and variable valve timing technology enables the Ecotec 2.4-liter to achieve one of the highest torque ratings - an estimated 170 lb.-ft. - for a 2.4-liter naturally aspirated four-cylinder in the United States. The 2.4-liters 170 horsepower at 6000 rpm also is one of the highest specific-power outputs for any non-boosted four-cylinder of any size sold in the U.S., according to Wards 2003 market data.
The 2.2-liter and 2.4-liter dual overhead camshaft (DOHC) engines feature aluminum block and cylinder heads, counter rotating balance shafts, roller finger follower valve lifters, chain driven camshafts, electronic throttle control, coil-on-plug ignition, GM Oil Life System and extended life spark plugs and coolant.
With the new 2.4-liter engine, variable valve timing (VVT) is introduced to the Ecotec family. The new VVT system uses electronically controlled hydraulic camshaft phasers to alter the relationship of the intake and exhaust camshafts as much as 50 degrees relative to the crankshaft for improved performance and efficiency.
The Ecotec 2.2-liter is the foundation for GMs front-wheel-drive drag racing efforts. The race-prepared Ecotec engine, which produces more than 1,000 horsepower, powers GM Racings Chevrolet Cavalier in the NHRA front-wheel-drive Sport Compact class and has been a proven winner throughout 2003.
Mated to the Ecotec 2.2-liter engine in the Cobalt is a standard Getrag five-speed manual and available Hydra-Matic 4T45-E electronically controlled four-speed automatic transmission. The compact and efficient five-speed manual features five synchronized forward gears and a synchronized reverse gear. The 4T45-E is engineered to deliver transparent shifts in a quiet and durable package. With the Cobalt SS Supercharged models 2.0-liter supercharged engine, a manual transmission tailored to its unique power bands is included.
Everyone is going to VVT?