Innovative aluminum cylinder heads for the new GM direct-injection 6.6L Duramax diesel engines will be cast in Japan and shipped to GM's Moraine, OH, for assembly, says American Metal Market. The engines, with more than 100 lbs. (45 kg) of aluminum, will go into the 2001 Chevrolet Silverado and GMC Sierra pickups. Other aluminum parts on the powerplant include flywheel bell housing, crankcase, intake manifold and accessory drive brackets.

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