Hi all nice site just trying to figure something out about how low RPM and high torque vs high RPM low torque for moving a load. This is a subject I have been trying to understand and it seems I am missing something, Ok take you have a 238 HP Mack Semi that makes 1100 ft pounds of torque and you have a 238 HP motor that spins like 6000 RPM to but does not make near the torque. Ok the Mack can pull 60 thousand pounds and has a top speed of only 67 MPH which is the 238 HP part and it only need s a 5 speed to do this. With proper gearing can the 238 hp 6000 RPM gas engine ever move the load like the Mack diesel or is the only thing they have in common is they will both run the same MPH but the Mack can haul way more weight to that MPH because it produces much more torque which is your ablity to build and maintain power under a load. This is only part of the ?, thanks and hopefully someone can get me straight on this.