The 2012 Chevrolet Camaro will feature 323 horsepower, or 11 more ponies than the 2011 model. But General Motors engineers didn’t accomplish this feat by adding direct injection or variable valve timing. In fact, the 2011 version of the 3.6-liter V6 already incorporated those high-tech engine components.
Instead, engineers were able to add extra power by allowing the high-tech mill to breathe better. To do this, intake airflow was improved by seven percent through extensive simulation and bench testing. As a result, power is up by 11 horsepower, while exhaust flow is improved by 10 percent.
Engineers also manged to remove an incredible 13 pounds from the 3.6-liter by integrating the exhaust manifolds into the aluminum cylinder head. This change meant that a pair of old-school iron manifolds, 12 bolts, a pair of gasket and heat shields with six more bolts were eliminated.
Beyond weight savings, these changes also eliminate the potential for gasket failure while fuel efficiency is improved. The 2012 Camaro 2LS model will now boast 30 miles per gallon on the highway, up from an also respectable 29 mpg from the 2011 model.
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