1977 MACK DM, (USED) Mack DM Dump Truck Motor: 676 Transmission: 2 Stick Rears: Mack 58,00 (USED) Mack DM Dump Truck Motor: 676 Transmission: 2 Stick Rears: Mack 58,000LBS Camel Back Lift Axle: Air up air Down Frame: Double Chassis The truck runs and drives great!!!! Call for more information ask for Juan Ramirez; Suspension: Camelback; Axle: 4