Machine description: NEW 3/8 FRAME 300 INCH WHEELBASE. NEW 14,600 LBS FRONT AXLE. NEW 20,000 LB STEARABLE LIFT AXLE, 40,000 LBS REARS, 390 REARS, CATERPILLAR C15, 550 HP ENGINE, 6NZ PREFIX, 400,000 ON FULL REBULID. FULLY ... more info about the 2001 Peterbilt 379.