Cat vs Powerstroke torque curves
I drew out what I expect the Powerstroke torque curve would look like relative to a Cat C11. I think it is very interesting how these curves reveal the different pulling characteristics of ...
Forum Discussion
Sport45 wrote:
That Volvo could have had up to 600hp. That would easily blow the doors of of any of the pickups they may have been testing.
Volvo D16 Spec Sheet
For some reason when you see the curves for diesel pickup engines torque is shown on the major (left) scale. For OTR and industrial engines it seems HP is most often seen on the primary axis. Go figure...
That is majorly due to the fact that with pickups, you mainly only have one transmission choice(accept for Ram 3500 diesels) per engine, and maybe three or four rear gear choices so it is crucial to get as much torque from the engine as you can.
With the big trucks, your transmission selection list is just about endless allowing you to get anything from from a 10-speed all the way up to an 18-speed. Even two of the same speed transmission can have different gear ratios in each gear. That combined with the long list of rear gear options(the popular Eaton 404 starts at 2.64:1 and ends at 7.17:1) makes torque output not that important of an issue since you can spec the truck out to virtually put as much torque to the ground as you want with gearing. Since you cannot multiply horsepower with your gearing spec, it becomes the advertised factor between the engine competition.
