Construction and other equipment

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645B

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=195557
Printed Date: 31 Oct 2025 at 3:59pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: 645B

Posted By: Amos
Subject: 645B
Date Posted: 05 Jun 2023 at 11:19pm

My 645 engine is getting tired, wondering if putting a 5.9 cummins in it would be enough umph for it...i think it would be more fuel efficient, anyone re engined one of these loaders?

Replies:

Posted By: Codger
Date Posted: 06 Jun 2023 at 5:39am

I have seen that done but not by me. Yes, it would be plenty of power but some of the reconfiguration take a little ingenuity to make everything work. Not hard, just a lot of thought and minor expense of locating things.

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