![]() ![]() “When ascending a steep incline, engine rpms drop to around peak torque output,” said David McKenna, director of powertrain sales and marketing. “Īvailable in Mack Pinnacle on-highway models, the 13-liter MP8 Econodyne + engine produces 505 hp with 1,860 lb-ft of torque when operating in either of the top two gears.Īccording to Mack, this capability “maximizes fuel efficiency while providing the necessary power to help drivers conquer long and steep grades.” The OEM said its new Mack MP8 Econdyne+ is a “powerful and high-performing engine ideal for on-highway customers who require additional muscle to move their loads. LOUISVILLE, KY.Here at the Mid-America Trucking Show, Mack Trucks unveiled a new high-horsepower 13-liter Econodyne diesel and two new suspensions, one for on-highway tractors and one for vocational models. ![]()
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