Research, that first iteration of 5.7 iforce v8 had some kid of recall on maybe the heads i think..or something like that. It was a factory flaw and only effected the earliest 07 engines. After that they are basically indestructible. One of the finest engines on the road with the worst fuel mileage. Very fine trucks with enough power to pull a space shuttle😁


"I dont quit.. And ill fight alone if i have to"