7.4L 454 V8: 420 HP GEN IV & V • 425 (385, 400, 425 HP GEN IV & V) • 525 SC (500 HP GEN V) 7.4L BLUE WATER INBOARD (-D715493) (310, 340 HP GEN IV) 7.4L BLUE WATER INBOARD (D715494+) (310 HP GEN V) 7.4L BRAVO (-D603117) (300, 330 HP GEN. IV) 7.4L BRAVO I