uuhhhh.... deliver goods, bread, frito lay products, fed ex trucks, ups trucks, marine applications, generators, etc etc.
The 3.9L/4BT Cummins is an engine in the same family as the 5.9 litres (360.0 cu in) Cummins turbodiesels. The 3.9L/4B is an inline four cylinder turbodiesel that was popular for many step van applications, including bread vans and other commercial vehicles. This engine is also used in various industrial, construction and agricultural applications. With a cylinder bore of 4.02 inches (102.1 mm) and a piston stroke of 4.72 inches (119.9 mm), the engine had a wet weight of 745 pounds (338 kg). In recent years it produced 130 horsepower (97 kW; 132 PS) and 355 foot-pounds force (481 N·m) of torque. The 4BT today is also popular as a conversion engine among many light-duty pickup trucks that were originally equipped with gasoline engines. This is due to its high fuel efficiency while producing power comparable to the original light-duty gasoline engine. The 4BT engines have the same pistons, connecting rods, valvetrain components, and injectors as their 6BT counterparts.
So the possibilities are endless. Look at cummins/onans website and you can find more. Or look at 4btswaps.com
Im trying to weigh the balance so to speak.
I want decent power, good mileage a broad power band and a dead nuts reliable engine that is strong and parts available anywhere. Oh an I want it lighter then my current engine (360) but will work with my existing drivetrain or at least a mopar component.
I am looking at a diesel to ditch the ignition system (distributor, plugs, wires) an get better mileage and wear and because I work on diesels most of the day they are intriguing me.