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Old 06-11-2007, 11:05 PM   #4
selil
 
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Drives: Chevy Avalanche
Join Date: May 2007
Location: On the lake
Posts: 50
Actually GM only makes one engine. They just tune the engine for MPG or HP through the computer settings. A few computer tweaks and a Impala can do 0-60 in 2.3 seconds...



Really!
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