Used Lufkin N1604C inline gear increaser gearbox with following features:
• 2100 HP Service Rating
• 3946 HP Catalogue Rating
• 3.977:1 Ratio
• 1000 Input Speed
• 3977 Output Speed
• 1.87 Service Factor
• Weight
• Dims
HP: 2100
RPM: 1000/3977
Ratio: 3.9770