4W220
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=146629
Printed Date: 19 Jul 2025 at 8:48am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 4W220
Posted By: ajl
Subject: 4W220
Date Posted: 19 Jan 2018 at 8:44pm
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One of these coming up on auction locally in the spring with 7200 hrs. Were all the drive line issues with the 7580 addressed on these? I would just use it with lighter loads as the engines would be identical to a 7080 and have the same issues? Anything to look for on these tractors?
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Replies:
Posted By: Lonn
Date Posted: 19 Jan 2018 at 9:05pm
rpm was slowed down to 2400 rated from the 2550 rated rpm of the 7080 for better reliability.
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Wink
I am a Russian Bot
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Posted By: jiminnd
Date Posted: 19 Jan 2018 at 9:39pm
Don't know much about them but should be collectable, I think less than 500 built.
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1945 C, 1949 WF and WD, 1981 185, 1982 8030, unknown D14(nonrunner)
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Posted By: Ron Eggen
Date Posted: 19 Jan 2018 at 10:24pm
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According to Tharran E. Gaines in a Heritage Iron article in the May/June 2017 issue only 175 units were built , so it is a very collectible A-C tractor.
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Posted By: Ron Eggen
Date Posted: 19 Jan 2018 at 10:30pm
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He also stated that there were 1,610 units built of the 7580 , which the 4W220 replaced , but the 8070 FWA was introduced in 1983 . It could do anything the 4W220 could and for $10,000 less . So the 4W220 was quietly dropped from production in 1984 .
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