turning up a mack ch613 e7

Sep 26, 2016 #11

I have an 03 with the 427 E7 its the injector pumps that make the difference in these mack motors , they are about 550 each plus installation

miltrans, Sep 26, 2016

#11

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Sep 28, 2016 #12

unit pumps are the same from 300-460 if you replaced some and got a hp jump its because yours was worn

Mack427, Sep 28, 2016

#12