Allis Chalmers 7000 Price, Reviews, Specs, Engine Oil Capacity, Weight, Serial Numbers, Attachments, History, Features & Pictures The Allis Chalmers 7000 Tractor had 2 versions, the early maroon (or brown) chassis and the later black chassis. The switch occured in 1978, with serial number 8000 as the first Allis 7000 black chassis tractor. The black-chassis featured a … [Read more...] about Allis Chalmers 7000 Specs, Price, Review, History