Could anyone please provide a link or scanned image(s) of the complete torque curve for the Cummins 5.9L HO I-6? I have looked several places on the web including Cummins and Dodge, plus various forums, etc. I didn't find it in the 2004 Commercial Truck brochure either. I would like to see the curve for the '04.5 but haven't even been able to find one for the '04. Ideally it will have the torque curve and the horsepower curve for the H.O. on the same graph, but they may come separately. Thanks in advance.

-v12xke

 

I pulled this off the web somewhere a long time ago. HO 4X4 stock, not 04.5. Don't know if it was an auto or stick. This is engine HP & TQ, not rear wheel, but if all your interested in is power curve, this will show that accuratley.

 

Here is a dyno sheet for my truck. The runs were made on a Dynojet 248C with the mods listed in my sig.

The green line corresponds with a pull made in 6th gear. The other 2 pulls on the sheet are in 5th gear.

 

I always thought peak tq was 1800, I will now shift a little higher up, thanks

 

An excellent example of the effect of turbo spool-up time. Thanks for posting it.

The Boss Hog
(Need to dyno Smoke . . . . . )