kkritsilas
Well-Known Member
Diesels have different power bands than gasoline engines, and are designed to make momster torque at low RPM. They are geared much higher than gasoline engines. Semis very rarely get to 2000 RPM, in fact, most don't even see 1500 RPM. Yet some are pulling 60-80,00 lbs. This is the reason they used to have 27 speed tranmissions when they were all manual. Even now, with the automatics, they have 10-12 speed automatics.
The Cummins in the RAM trucks is more like a heavy equipment engine than the diesels used by Ford or GM. Those engines are designed by "car guys", and rev higher. However, the Cummins engine comes from guys who design them for bulldozers, excavators, dump trucks, etc. Much heavier in weight, definitely designed with hard usage in mind, and are torque monsters, not just at peak, but all over the RPM scale.
The Cummins in the RAM trucks is more like a heavy equipment engine than the diesels used by Ford or GM. Those engines are designed by "car guys", and rev higher. However, the Cummins engine comes from guys who design them for bulldozers, excavators, dump trucks, etc. Much heavier in weight, definitely designed with hard usage in mind, and are torque monsters, not just at peak, but all over the RPM scale.
