Farm Equipment - pulling tractors 426

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pulling tractors 426

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=190145
Printed Date: 01 Apr 2026 at 2:41pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: pulling tractors 426

Posted By: nickia
Subject: pulling tractors 426
Date Posted: 18 Aug 2022 at 12:29pm

lot of D-21's used for pulling and of course with the 426 is the D-21 lighter than a 7000's series? I guess what im asking why so many more D-21's used in pulling than the 7000's series with the same engine?

Replies:

Posted By: injpumpEd
Date Posted: 18 Aug 2022 at 12:34pm

Lighter weight rear end, and simple gear trans with dry clutch.

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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!

Posted By: DrAllis
Date Posted: 18 Aug 2022 at 6:11pm

Many years ago, I knew of a D-21 from Nebraska that pulled in 6,000 lbs or a little less. The D-21 had been in the 7200 lb class in the 1970's for a long time and then the Farmall guys started using 706 rear ends to get those 1066's down into that class.

Posted By: MACK
Date Posted: 18 Aug 2022 at 9:24pm

LOOKS. MACK

Posted By: AaronSEIA
Date Posted: 19 Aug 2022 at 5:44am

7000 series is much heavier, far more complicated tranny, wet clutch, etc, etc.

AaronSEIA

Posted By: DougG
Date Posted: 19 Aug 2022 at 9:59am

Some of those guys got pretty innovative -didnt the Mckinnons get help from Allis with their D21 ?

Posted By: AC7060IL
Date Posted: 20 Aug 2022 at 12:26pm

Whichever rearend can sustain a mighty 15 seconds of abuse?