Brian Sanders, Dennis Sanders and the crew from Ione California brought the mighty Dreadnought back for another year of racing, the family has owned and raced her since her inception in 1983. The planes is powered by the largestdisplacement aviation piston engine to be massproduced in the United States, the Pratt & Whitney R4360, a 28cylinder fourrow aircooled radial engine which produces over 4,000 hp.