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Discussion Starter · #1 ·
40s where built from December 1949 to November 1957. 14,929 where built in Gas, diesel, LPG, Distillate, and high altitude gas. Standard wide fronts, Adjustable wide fronts, Single front wheel, and narrow front wheels where all optional. Powered by a Buda 6 cylinder engine. The later Cockshutt Golden Eagle also used the 40 serial number range but had a Perkins diesel.

COCKSHUTT 40 - 3-4 Plow Rated
Big brother to the 30, the Model 40 was introduced in 1949. Extensive test comparisons had once again led the Cockshutt engineers to select a Buda overhead valve engine, this time a 6B230 - six cylinders with 77 more cubic inches of displacement than the 4B153 but with internal components identical to the 153 - just two cylinders bigger!

Once again the innovative engineering team devised technology that would serve them far into the future. Having decided to machine their own final drive case, Cockshutt built a base rear-end that would withstand future horsepower increases. Two bull gears with bearings on each side were designed into a four-walled gear case and connected with a sliding spur gear transmission, six forward and two reverse. With a 1.6 mph 1st gear, the Model 40 was the slowest tractor in its horsepower class! This "straight line" (no u-joints) drive to the differential proved popular with tractor pullers long into the future and was even employed on the much later 560 and 570 models.

Available with the ever-popular options of LIVE Power Take Off and LIVE Hydraulics, the Model 40 was a field workhorse. Nebraska tests rated it with 3 7.85 maximum horsepower at the drawbar and 43.30 on the belt pulley. The Model 40, like the 30, was an easy tractor to service. Both the PTO and hydraulic systems were bolt-on units; easily removed for maintenance and the OHV Buda engine had a low upkeep reputation after years of arduous fieldwork.

Beginning in 1950, during the second year of Model 40 production, a 230 cu. in. Buda diesel was available and by 1953 both a distillate and LP were added. With the A-C buyout of the Buda Company, Cockshutt began to consider alternative engine sources. By 1955 the Model 40 platform was also available as a 40PD - equipped with a Perkins 269.5 cu. in. L4 diesel. When the Model 40PD was shipped for sale in the U.S., it was decaled as a Golden Eagle 40D4. Production of the 40 platforms ended in late 1957 after nearly 15,000 had been built.

Note: The above information is NOT to be reprinted for distribution or any commercial use without permission of the International Cockshutt Club, Inc. To learn more, we recommend purchasing our book, Cockshutt: The Complete Story, published in 1999 by the American Society of Agricultural Engineers. To order, click the book cover on our home page.

A 1950 in all her glory....

1952 Co-op E4. Same a Cockshutt 40 just orange.

A 1956 Black Hawk 40. The last version of the 40.

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There was one near here from the 60s to the 90s but it's been gone a while now. I knew the fellow who owned it and at one time the back roads were so bad in our area in the spring that some might be impassible for a week or two. This fellow and a friend trapped in the spring to make extra money, in those days extra meant getting by instead of falling behind, so he rigged up a bench seat on the forty so they could take it down an otherwise impassible dirt road to the trapping area. The old fellow said the draw bar would be dragging mud but the tall tires would still go through it.

Discussion Starter · #7 ·
mgood said:
Matt was there not also a larger model 50 standard tread built concurrently with the models 40? And also would it not have been a diesel?
Yes, I will post a little fyi on it here in a few minutes
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