Ram Cummins Vs GM Duramax Ike Gauntlet

4x4ord wrote:

travelnutz wrote:
As a nearly 40 year automotive engineer and automotive engineering operation owner, I sure as hell do know what I'm talking about! Taught many classes and you'd be wise to attend such! Torque and only torque is what and the force that turns the wheels to make the vehicle move at all or to any desired velocity and keeps it at that velocity also. Especially apparent on an uphill grade where torque does it all, all the time. Simple, as if you do NOT have adequate torque to maintain a desired velocity, the vehicle will drop in velocity.

Theoretical horsepower turns NO vehicle wheels nor does it apply one ounce of force to turn any wheel as horsepower is only theoretical calculation value. Torque is the only axle/wheel twisting force ever present! NO work is accomplished or done at all if there isn't adequate torque to make the wheels turn to any velocity. Try to deny this known well long time established FACT!!!

You've got your units confused. Asking how much torque is required to move a 20,000 lb truck up a 7% grade at 60 mph is like asking how may feet of gasoline it takes to fill your fuel tank.

Hp is a number used to tell you how much torque you need to produce at a rpm to achieve that speed. I think you guys are saying the same thing just have a different way of looking at the equation. How fast can you accelerate to 60mph up a 7% grade with 12.5k with 300hp? To answer the question you have to know how much torque you can apply through the RPM range. HP will just tell you the max speed it will achieve. If you don't have the ability to apply the torque needed to get the load to that max speed then max hp is useless.