Tractor Pulling using a Curtiss-Wright R3350 3700hp 18 cyl

One of the most powerfull radial engine ever made. A compound 18 cyl unit
General characteristics
Type: Twin-row 18-cylinder radial engine
Bore: 6.125 in (155.6 mm)
Stroke: 6.312 in (160.2 mm)
Displacement: 3,347 in³ (54.56 l)
Length: 78.14 in (1985 mm)
Diameter: 55.62 in (1413 mm)
Dry weight: 2670 lb (1212 kg)
It was fitted to the DC8 and the Constellation