A motor that replaced the GM and Detroit Diesel-built 6.2L and 6.5L motors. The first was the LB7, then the LLY, then the LBZ and as of 2007(.5), the clean-diesel LMM. The truck currently, and for two years, produces over 360 HP and 650 LB. FT. and has solidly becoming a sucessful and reliable motor. DMAX Ltd. in Moraine, OH recently produced it's one-millionth engine.
Duramax Applications: Chevy and GMC 2500 HD and 3500 HD Chevy Kodiak and GMC TopKick
by dmax6600 August 27, 2007
2 more definitions
Chevy's most kick as truck, the durmax diesel engine (made by Isuzu) makes fords and dodges look like junk they really are.
Look at that black smoke! Must be a duramax!
by umm yeeee November 02, 2009
refers to the greatest tampon when it comes to trucks. ford powerjoke, chevy duramax. not considered as bad as the powerstroke but second worst in diesel engines. drive a cummins.
chevy duramax: makes a great tampon for that elephant you call your girlfriend.
by cummins man January 25, 2009