2002 F450 SD 7.3L
I'm trying to get an idea of how the powerband works in these older trucks or even just how it's supposed to feel. This is my first diesel ever. I have recently gone over my engine and fixed all defective sensors, charge pipe leaks, leaking up-pipes etc. New filters and fluids. Basically got the thing running night and day better than when I got it with no codes. I do think it's about as good as it gets considering it was only rated at 250hp, but here's my question. I've noticed that power falls off at around 3,000rpm. Is this normal? If I hammer the pedal, it will go through each gear shifting at about red-line (3800rpm from the looks of it). But from about 3000rpm+ it's like there is no more power. It just keeps trying, but lags till the next gear. The turbo is boosting good at low rpm and takes it up to speed pretty good, but there is just no more pull at higher rpm. Is this just how they feel? Maybe the factory turbo just cant flow above 3000 rpm? Just trying to get a general idea.