Diesel U33C A Unit Powered -- ATSF #8511

General Electric's big roadswitchers helped fuel the horsepower race of the 1960s, finding work on dozens of US roads. The U33C appeared in 1968 with a whopping 3300 horses under the long, square hood. An outgrowth of the earlier U30, the new-comer could be easily identified by its bigger radiators.