Here is where the Cummins V12 started, the 1936 Model VL. In the mid-1930s, the practicality of a diesel powered locomotive was starting to compete with the steamers and developments were ongoing in diesel manufacturing to accommodate that market. Cummins got involved, first by building a locomotive powered by two 250 hp Model L sixes. Cummins engineers then put two of the 2309 cubic inch model Ls together on one crankcase in a 60 degree vee to make the 500 horsepower (at 1000 rpm) VL. A pair of these babies were installed into a locomotive for tests but the project didn’t get far. General Electric and General Motors soon became heavy hitters in diesel locomotive development and Cummins wisely realized they were outclassed and dropped their locomotive work. This VL is shown with the new Cummins Model A automotive engine about 1937. Only about 15 of these engines were produced.
SPECIAL THANKS TO KEITH BAYLOR, KATE FINESKE AND TOM KUBIAK