Cummin's new 370B in-line six packs a lot of power into a compact package. Measuring just 4'0"x2'7"x2'8" and weighing just 1,225 pounds (3.3 lbs/hp), the engine squeezes better than one horsepower from each cubic inch - 370 hp from 359 cubic inches. Turbocharged and aftercooled, the 370B's power density and compact dimensions make it a versatile fit in a wide range of both new installations like the Pursuit 3400 and repowers.

Among the technologies responsible for such performance are a high-pressure, inline fuel pump and five-hole injectors that provide excellent fuel dispersion and more complete combustion. A standard fuel cooler maintains power output even during long, summertime canyon runs, while an optional air heater facilitates cold-weather startups. For added strength and durability, the intake manifold, thermostat housing, fuel-filter head, oil pump, and oil cooler are all forged as a single piece on the Cummins 370B.

And to make servicing the engine easier, the fuel filters, oil filters, dipsticks, and engine gauges are accessible from either side. There's also a common interface for the supply and return lines, and the shutdown solenoids and priming pumps are easily accessible.  

This review/article originally appeared in Power & Motoryacht Magazine, December 1996 and is written by Capt. Jim Gorant. For more great powerboat reviews, visit their website and subscribe at: