Mack E7 460 motors

i run one. overall pretty happy with it. power is good. and i run heavy 98% of my loads im over 90k gross kinda like driving a 12.7 Detroit though it likes to run wound up, 1600 is the recommended cursing rpm. falls on its face below 1400. the 427's and lower hp had a better tq curve. good fuel millage its a light engine can defiantly carry some of your load up on the steers. pretty reliable. with the 460's i really would not want anything other than at least a 13 or 18 speed transmission. and your going to want gears that will put you at at least 1500 rpm at your normal target cursing speed.

if you run them where they want to run they pull strong. mine will keep right up with 500 c-15's all day. 550's will out run me on big hills at equal weights but not by a mile. (iv never messed with the ecm but its possible it may have been turned up before i owned it)

downsides is pretty much any engine related part has to come from mack. my local mack dealer has great parts guys but carry very little stock on hand for my truck. also my one time taking it to macks shop witch resulted in several more visits due to issues with the work they did was not good. your millage may vary on that.

re-mack engines can come with a 3 year unlimited millage warranty if they repaced the injectors and turbo when they installed the engine so depending on when it was done that engine may still be covered for a while.

jake break is kinda weak but about on par for what you should expect for a 12L engine.

there reliable they do have some quirks but there good engines.