The 1998 Mack CH613 is a heavy-duty truck equipped with a Mack E7 engine delivering 400 horsepower, designed for reliable performance in demanding applications. It features a Mack T2180 transmission, ensuring smooth and efficient operation. The truck is fitted with both a Mack CRD92-93 front differential and a Mack CRD92-93 rear differential, each with a 4.42 ratio, providing strong and balanced torque distribution.