Bore and Stroke: 156 mm (6.125 in.) x 160 mm (6.3125 in.) The Wright R-3350 was a critical development for the success of the Boeing B-29, its major airframe application. Early versions of the R-3350 ...
Bore and Stroke: 156 mm (6.1 in.) x 160 mm (6.3 in.) This was among the largest piston engines ever successfully produced. Design began in early-1936, and the first engine ran in mid-1937.