Duramax

Duramaxs were first made in 2001 and are still going today, they are used in GM trucks and the engine is a 6.6L. The engines are LB7, LLY, LBZ, LMM, LMK, LML, and LGH they all however are 6.6L. Most of the engines are 32 valves and lot's of people like these trucks too, they are nice engines to own and maintain. When people buy these trucks they delete them and add accessories to supe  them up to make them roll coal out the exhaust pipes. One guy on YouTube has a twin turbo duramax and when he does boost launches his truck really goes because of all the add on's he has put on.  
    The duramax trucks are v8's compared to cummins engine which is a straight six diesel engine. The body shape has changed alot just like the cummins truck body shapes but the duramax engines don't have gens like the first, second, third, and fourth gens.