Farm Equipment - Diesel engine 3500vs3700

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Diesel engine 3500vs3700

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=173082
Printed Date: 01 Apr 2026 at 1:14pm
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Topic: Diesel engine 3500vs3700

Posted By: tomj
Subject: Diesel engine 3500vs3700
Date Posted: 25 Jul 2020 at 2:13pm

Can anyone tell me the difference between a 3500 a D21 and 3700 out a later maroon belly Allis. Are any parts interchangeable?

Replies:

Posted By: MACK
Date Posted: 25 Jul 2020 at 9:51pm

Most parts are innerchangeable on inside. Different block, oil cooler and pump. MACK