From what I have seen its oil coolers, egr coolers, radiators, high pressure fuel pumps, front covers cavitate, etc. Seems like the 6.4L has almost the same types of issues that the 6.0L had. Not saying they fail as often, but the pattern failures are still there. For example the oil cooler is pretty much the same on the 6.4L as the one on the 6.0 and you pretty much have to pull the cab to do it.
:rofl: No they have far worse problems than a 6.0
6.0 Facts
I never once put a radiator in a 6.0
I never had to do dozens and i mean DOZENS i have done at the very least at this current dealership im at now, 40 short blocks and 10 complete engine replacements. I only did 3 6.0s 1 for a failed oil jet that made one hell of a clatter at idle only, 1 due to a bent rod from a leaking injector, 1 from a melted piston from a leaking injector.
I never had to do a front cover in a 6.0 unless it was a short block id figure why not start fresh and every water pump i suspected as being faulty the front covers looked pristine. 6.4s i can take pictures of front covers that look like someone shot them with double 0 buckshot at point blank range.
6.0 i never had hyper extended or the thermostat mount corrode. 6.4s i see it all the time. especially leaking radiator. Fords fix-new thermostats, new thermostat housing new front cover and new hoses and new radiator. only to have a repeat failure 20-30k miles down the road. someone explain to me why, as i do know hyper extended thermostats will cause a radiator burst my guess is that stupid horizontal egr cooler being mounted directly above a hot manifold and the fact that the radiator is mounted where all the body flex is the upper support.
Once i did studs and had the heads milled i never once saw the truck again for head gasket failure. sure high pressure oil system failure or injectors. but never for a failed head gasket.
NEVER HAD AN ISSUE WITH A CAB COMING OFF HALF AN HOUR AND IT WAS UP IN THE AIR
6.4 facts
I hate them. Yes i am a chevy guy judge me if you will but before i was i was into fords. when i started getting newer fords i had nothing but problems with them. friends and family members who had fords had problems with them too. problems as in leaving you stranded. I have yet to have a chevy aside from a TBI 454 that i held wide open mud bogging ever leave me stranded or have catastrophic failure. I beat the hell out of my vehicles and dont have any problems that i had with fords. they just dont hold up. HOWEVER i am impressed with the 6.7 i have yet to see catastrophic failures with this engine system.
Anyways- 6.4 is not meant for joe blow without a warranty. they suck. they are expensive. and time consuming.
Cab bolts almost always spin the cage nuts. WHY did they use cage nuts? What was wrong with the 6.0 cab mounting system? Not a damn thing thats why! Ford found out through field service engineers that we found a way to beat the warranty time for head gaskets AND!!!! Making the job 1000x easier and less time consuming. it must have raised flags at ford when i was pumping out (first dealership i worked at i had 4 2 post rotary 18k pound lifts and 2 4 post 36k pound racks) 4 cabs off and 4 sets of heads sent out to be milled in a day when we were swamped with 6.0 head gasket jobs. typically i could do one monday get the heads back tuesday and be done with it tuesday by 10am.
6.4 no everything is a F*ck fest. i want to meet the engineers at ford who designed the cowl to stick so far over the top of the engine and just punch them as hard as i can in the mouth along with whoever came up with the bright idea to put the radiator where they did and pack it behind how many other heat exchangers... retards!
