Ultimate Test Drives… Mack’s MP8 505C+ MaxiCruise Pt.1: Small Block, Big Load

Mack’s 13-litre MP8 engine may be small in stature, but it’s big on performance. It delivers 505 horsepower and 1,860 lb-ft of torque, which is more than enough to pull 138,000 lbs through the mountains on B.C.’s Vancouver Island.


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