Used GMC Water Well Drilling Rig in Fresno, California, United States for sale. Ford 4 Cylinder Upper Engine, Straight Down Outriggers, Rear Outriggers, GM V8 Gasoline Engine, Manual Transmission, 9000 lb Front Axle, 18500 lb Rears, 27500 lb GVWR, 10.00-20 Front Tires, 10.00-20 Rear Tires, Spring Suspension, 192 in Wheelbase. ...