This is my first mod, so I apologize if it lacks quality/has some issues. This is a Heavy Duty Inline-6 Motor available for the D-Series and H-Series. A neat quirk about it is that it is Gasoline powered.
As you can see, the motor makes a lot of torque around 1.5k RPMs and has a rev limit of only 4000 RPMs.
There are a couple of upgradable parts, such as the ECU, Turbo, and Engine Internals. Fully upgraded, this engine will make around 740 HP and 1350 Ft-Lbs of torque. There is also a 5 Speed automatic that I made for this motor.
It moves pretty well with the upgrades. I would suggest using AR162b's Trailerpack mod if you want to tow with this rig.
A link for that resource is here: https://www.beamng.com/resources/trailerpack.734/
I would also like to thank FakeCarGuy for allowing me to use some of the code from the turbo of his Cummins mod. A link to that resource is also here: https://www.beamng.com/resources/realistic-cummins-diesel-pack.11034/
I currently have no plans of making a 3D model for this engine, but I do plan on making custom configurations of vehicles with this engine. I don't know how to do that but will certainly do so when I learn how . If anyone is willing to help me, LMK!