7020 questions
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=136649
Printed Date: 08 Nov 2025 at 5:14am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 7020 questions
Posted By: DanD
Subject: 7020 questions
Date Posted: 26 Mar 2017 at 7:24pm
Have a few questions about 7020's. Just wondering about general reliability since it was the highest hp tractor they put a 301 in. I believe it was the only tractor application for a 301 with an intercooler, correct? I think the PD transmission has a pretty good reputation in these tractors. Anything else a person should know or look for? Thanks.
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Replies:
Posted By: Leon B MO
Date Posted: 26 Mar 2017 at 8:00pm
I have a pd 7020. The 301 and head is a little different in the 7020 than any other AC. Had to do some work on the head after I bought it but if you use it as a 120hp tractor, you will be happy. The top gears in the pd trans may be a little to fast for the 301. Just remember, it's a 301, not a 426. All in all, cheap horsepower.
Leon B
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Uncle always said "Fill the back of the shovel and the front will take care of itself".
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Posted By: DrAllis
Date Posted: 26 Mar 2017 at 8:42pm
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7000-7010-7020-8010 all have the same cylinder head with the copper injector tubes.
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Posted By: TREVMAN
Date Posted: 26 Mar 2017 at 11:03pm
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My dad had 2 of them, I spent a lot of time in those things. Power shift, never had any issues. And, in my humble opinion, the 301 is one of the best engines ever designed and built. Trev.
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Posted By: tomNE
Date Posted: 27 Mar 2017 at 3:50am
needs to have a water filter.
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AC from the start of my families farming career till the end!
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