General Motors is investing $888 million in its Tonawanda Propulsion plant in Buffalo, New York, "to support the production of the sixth generation of GM’s V-8 engines," the automaker announced Tuesday. The investment is a shift from a previously announced $300 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 and thermal management innovations." "Our significant investments in GM’s Tonawanda Propulsion plant show our commitment to strengthening American manufacturing...