The test mule was H&H’s most popular Ford flathead engine combo—a 1⁄8-inch-over, 1⁄8-inch-stroker that, with it’s 3.313-inch bore x 4.125-inch stroke, displaced 284 ci. The engine was stuffed with good internals, including Ross forged pistons, Scat forged H-beam rods, and a Scat cast crank held in place by steel main caps. With 280 degrees advertised duration, 0.380-inch lift, and a 111-degree lobe-separation angle, H&H’s custom solid cam was plugged in straight-up, actuating 1.5/1.5-inch Manley Pro-Flow stainless valves via hollow-body adjustable lifters and Isky springs.