Written by Larry Gay. Allis-Chalmers introduced its WD tractor in mid-1948 as the replacement for the WC model. Although the WD retained the 4-cylinder, 201-cubic-inch Allis-Chalmers gasoline ...

The Allis-Chalmers WD is 62 years old and still going strong. “Without a computer,” Wurmnest said. Many other tractor manufacturers, some no longer in business, were represented Sunday.