General Motors is investing 888millioninitsTonawandaPropulsionplantinBuffalo,NewYork,“tosupporttheproductionofthesixthgenerationofGM’sV−8engines,”theautomakerannouncedTuesday. Theinvestmentisashiftfromapreviouslyannounced300 million commitment to make electric-vehicle drive units at the plant, as the V-8 engines are used in GM’s full-sized trucks and SUVs.GM says the newer engines will provide drivers better fuel economy and reduce emissions by utilizing “new combustion ...