Outboards are extremely popular for their ease of service and also their power-to-weight ratio, which allow a builder like Bennington to stick 350 hp on the transom while adding only 780 pounds. The MerCruiser 8.2L weighs 1,080 pounds; adding the Bravo Three drive brings the weight to 1,228 pounds. (For a more apples-to-apples comparison, a 5.7-liter MerCruiser 350 Mag weighs 946 pounds without the drive.) You might say that the Merc has 80 additional horsepower, but consider that the 380 hp 8.2-liter weighs the same as the 430, so it's more weight with just 30 extra horses and the comparison becomes closer. That's a distinct weight advantage for the outboard. For techies, the outboard delivers a nearly 30 percent better horsepower-to-weight ratio at 0.44, while the sterndrive delivers a 0.34 ratio. The caveat here?