How can I find out how many horsepower my engine is?

What does DDDL mean?

I love that scene when Vinny comes in with that red suit (which is your profile picture). That suit looks like it was something that Abraham Lincoln would wear to court in 1850 lol

 

You must mean going uphill on a 6% grade, as gravity will affect speed downhill. There are no grade percentage signs for the uphill side of mountains, and the speed will be affected by how heavy the load is. You just specified "loaded". I know that I pass a lot of older trucks going up a steep grade even if i have a 45,000 pound load. I don't know the exact answer to your question.

 

The truck is governed at 63 mph without cruise control, and, with cruise control on, the truck is governed at 66 mph.

"Only way to know for sure is to hook it up"-----Hook what up? How do i do that? I don't really know what you are talking about. I don't even definitely know what you mean by ECM. My electronic logs device is drivertech. Is ECM the same thing as the electronic log device?

 

Is my drivertech my electronic control module?

 

I have heard plenty of drivers say that their trailer is loaded if they have a light load in the trailer.

I value precision.