After the 6.0 swap, Ive been getting knock Retard under off idle boost conditions. It usually occurs in 3rd or 4th gear low RPM around 2000. Has anyone experienced this. The engine is labouring a little during these conditions. Mid to top end has absolutely no knock retard. One thought is that this is out of the range of the cam and maybe a torque convertor may help. Could this be false knock. Somehow I dont think so because the engine is uaually pulling hard to move the truck at that low RPM particular in 4th gear. SOS!

 

I am having the same problem low speed knock and a little up top to. I am thinking about getting hptuners to try to fix it. Good luck with it but it probley just needs a good tune.