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charlie freese


VIDEO: GM Diesel engineering director describes the new Duramax 4.5L V8

About a year from now, General Motors will face a very interesting conundrum. The company will already be producing a version of its full-size pick-up trucks with a Two-Mode hybrid system. For the 2010 model year, another new engine will be added, a 4.5L diesel V8 that meets Tier 2 Bin 5 emissions requirements in all 50 states. The hybrid system gives a 30 percent boost in fuel efficiency over a 5.3L V8. The diesel should also offer a similar boost. The hybrid is a very expensive system to build. The diesel may be less expensive. The hybrid ... Read more →

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