It's fine. This motor was 155hp 285ft# at the stock fuel setting of 48.5mm/stroke. The torque these make is directly varies with the fuel you can inject when you have a turbo on it, displacement doesn't really matter as long as you have unused oxygen in there. So this pump is capable of about 80mm/stroke, theoretically capable of 470ft#. Mines not turned up all the way--maybe to something short of 450ft#. It doesn't downshift on hills, though I pull it down when the temps get up to 1,000F. These high compression diesels aren't meant to be run that hot. I'm nice to it and it's nice to me. I don't beat it up and it does what I need it to do. Without the turbo, it was a hazard with anything more than 6,000# on the hitch. I had one of those 16' tandem trailers made out of angle iron and a wood deck--only weighed 1,350# empty. When I was using that the natural aspirated 6.2 was fine. When I got the 2-car trailer that was 3,600# empty it was too much for it. I was coming back from Attica and it was okay onnce I was on the highway, but when I had to merge onto the Indy beltway, it was a slight upgrade and I had the pedal to the floor and the truck would not gain speed--and it was 5pm on a friday. I had enough. With the turbo this truck pulls into traffic more quickly than Sam's 2002 7.3 Powerstroke which was a 520ft# with a 6-speed and 3.73s. Most of it is that the computer on his only gives you fuel when the cruise is on. Kind of annoying.