Speed-O-Motive; West Covina, CaliforniaIt is generally known that the hot-rodding craze began shortly after World War II in southern California and quickly spread throughout the country. One company that was there from the inception was Speed-O-Motive. Opening their doors to support the automotive aftermarket in 1946, Speed-O-Motive quickly gained a reputation for providing gearheads with go-fast goodies. Their reputation as a quality, full-service machine shop specializing in stroker combinations continues to this day. Speed-O-Motive has years of motorsports experience and is known for providing lots of power-for-the-dollar, no matter what you're building. Their engines are a healthy combination of power and real-world streetability on pump gas. For their entry in our Hemi challenge, they drew from years of trial-and-error experience in combination with modern parts selection and metal coating technology to build the most powerful single-carburetor entry in our challenge.
The Speed-O-Motive entry utilized the same Mopar Performance block as the rest of our competitors, which was fully CNC machined on their Rottler equipment and honed with torque plates. Inside their block, August and the guys from Speed-O-Motive began with the solid foundation of a forged Eagle 4.150-inch stroke crankshaft and Eagle H-beam connecting rods measuring 6.86 inches. Eagle crankshafts and connecting rods were the choice of most of our competitors due to their excellent strength and affordable cost. Ross custom-forged pistons were utilized to fill the holes after being coated with a thermal barrier coating and Federal Mogul main, and Clevite rod bearings kept things spinning freely on a film of Royal Purple synthetic engine oil. Total Seal gapless piston rings and a low-tension oil ring kept the combustion chambers sealed. The rotating assembly was balanced and held together with ARP fasteners. A Melling high-volume oil pump was matched with a Milodon low-profile oil pan and windage tray to keep everything lubed. A Chrysler SFI-approved vibration dampener was then bolted on to keep harmonics to a minimum.