Kuhlman8387 Posted June 24, 2017 Share Posted June 24, 2017 Hey...i got a question about one of our mp 8 motors. Bought the truck used a month ago...2008 cxu?....truck dont run like a 485...its sluggish....13 spd with 3.90 gears...had it dynoed...ran 308 and 301 hp to the wheels...called mack in greensboro...wouldnt give our dealer the authority to make it 505 1860 torque???......does anyone have any idea why they wouldnt? Truck has 800,000 miles so no warranty....fuel housing has been replaced along new injectors and ecm? Quote Link to comment https://www.bigmacktrucks.com/topic/50276-mack-mp-8/ Share on other sites More sharing options...
Mackpro Posted June 27, 2017 Share Posted June 27, 2017 They didn't come out with 505 till 2010 SCR/DEF engine. 485 was a big as you could get back then. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/50276-mack-mp-8/#findComment-373556 Share on other sites More sharing options...
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