The biggest advantage to using a 4BT Cummins, over the standard 4.0L gas engine, in a rock crawler is the peak torque delivery occurring at around 1,600 rpm compared to the 3,000 rpm peak torque of ...
The 6.7 Cummins and 6.6 Duramax diesel engines are both reliable and solid, but they do differ in some ways. Here's the ...