time. [8] [ edit ]797 engine A gross 3,400 hp (2,535 kW) [net 3,211 hp (2,394 kW)] Cat 3524B HD EUI 24- cylinder , high displacement , electronic unit injection , quad single-stage turbocharged , aftercooled , four-stroke diesel engine powers the 797. [9] [10] The Cat 3524B HD engine is