If you're looking at the Cummins 4BT and 6BT engines for a potential swap ... The smaller size makes it a good fit for vehicles like the Ford Ranger and Chevrolet Blazer as well as other vehicles ...
If you're searching for information about the Cummins 4BT diesel engine and how it differs from the 6BT, you likely fall into one of three camps. Camp one enjoys reading about obscure diesel engines.