Mike Mc
Well-Known Member
My '79 KW with a Cummins 855 Big Cam Four has the variable step timing control. The STC is suppose to hold the injector down to help get better mileage and the truck has a reputation for wearing out injector cam lobes. It makes me think all the noise coming STC makes is hammering on my new cam and wearing it out. I don't like all the noise it makes and would like to disconnect it if possible? Do the injectors have to be changed too?