R-1340-7 450 hp (340 kW), 600 hp (450 kW) R-1340-8 425 hp (317 kW) R-1340-9 450 hp (340 kW), 525 hp (391 kW) R-1340-16 550 hp (410 kW) R-1340-17 525 hp (391 kW) R-1340-19 600 hp (450 kW) R-1340-19F 600 hp (450 kW) R-1340-21G 550 hp (410 kW) R-1340-22 550 hp (410 kW) R-1340-23 575 hp (429 kW) R-1340-30 550 hp (410 kW) R-1340-31 550 hp (410 kW) R-1340-33 600 hp (450 kW) R-1340-48 600 hp (450 kW) R-1340-49 600 hp (450 kW) R-1340-AN1 550 hp (410 kW), 600 hp (450 kW) R-1340-AN2 550 hp (410 kW), 3:2 geared prop shaft R-1340-B 450 hp (340 kW) R-1340-D 500 hp (370 kW) R-1340-S1D1 525 hp (391 kW) R-1340-S1H1-G 550 hp (410 kW), 600 hp (450 kW) R-1340-S3H1 600 hp (450 kW) R-1340-T1D1 520 hp (390 kW)