The Wellman Power Wagon's unrestored powerplant is a 230ci version of Dodge's legendary L-head six. In light truck use, versions of this "small-block" flathead engine appeared in 201ci, 217ci, and 230ci displacements. The "big-block" truck version, used in later Power Wagons, displaced 251cubes. In '50, the 230 cranked out 94 hp. With all that power, you can get up to about 65 mph if you have a mile to accelerate. This engine puts out a lot of torque down low, but is done making power by 3,600 rpm.